EVAL-AD5662EBZ [ADI]
16-Bit nanoDAC in a SOT-23; 16位属于nanoDAC采用SOT- 23
| 型号： | EVAL-AD5662EBZ |
| 厂家： | 
ADI |
| 描述： | 16-Bit nanoDAC in a SOT-23 |
| 文件： | 总24页 (文件大小：584K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
2.7 V to 5.5 V, 250 μA, Rail-to-Rail Output
16-Bit nanoDACTM in a SOT-23
AD5662
FEATURES
FUNCTIONAL BLOCK DIAGRAM
V
V
Low power (250 μA @ 5 V) single 16-bit nanoDAC
REF
DD
GND
12-bit accuracy guaranteed
POWER-ON
RESET
Tiny 8-lead SOT-23/MSOP package
Power-down to 480 nA @ 5 V, 100 nA @ 3 V
Power-on reset to zero scale/midscale
2.7 V to 5.5 V power supply
AD5662
V
FB
REF(+)
16-BIT
DAC
DAC
REGISTER
OUTPUT
BUFFER
V
OUT
Guaranteed 16-bit monotonic by design
3 power-down functions
Serial interface with Schmitt-triggered inputs
Rail-to-rail operation
INPUT
CONTROL
LOGIC
POWER-DOWN
CONTROL LOGIC
RESISTOR
NETWORK
SYNC interrupt facility
Temperature range −40°C to +125°C
Qualified for automotive applications
SYNC SCLK DIN
APPLICATIONS
Process control
Figure 1.
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
GENERAL DESCRIPTION
The AD5662, a member of the nanoDAC family, is a low power,
single, 16-bit buffered voltage-out DAC that operates from a
single 2.7 V to 5.5 V supply and is guaranteed monotonic by
design.
The AD5662 uses a versatile 3-wire serial interface that operates
at clock rates up to 30 MHz, and is compatible with standard
SPI®, QSPI™, MICROWIRE™, and DSP interface standards.
PRODUCT HIGHLIGHTS
The AD5662 requires an external reference voltage to set the
output range of the DAC. The part incorporates a power-on
reset circuit that ensures the DAC output powers up to 0 V
(AD5662x-1) or to midscale (AD5662x-2), and remains there
until a valid write takes place. The part contains a power-down
feature that reduces the current consumption of the device to
480 nA at 5 V and provides software-selectable output loads
while in power-down mode.
1. 16-bit DAC—12-bit accuracy guaranteed.
2. Available in 8-lead SOT-23 and 8-lead MSOP packages.
3. Low power. Typically consumes 0.42 mW at 3 V and
0.75 mW at 5 V.
4. Power-on reset to zero scale or to midscale.
5. 10 μs max settling time.
The low power consumption of this part in normal operation
makes it ideally suited to portable battery-operated equipment.
The power consumption is 0.75 mW at 5 V, going down to
2.4 μW in power-down mode.
RELATED DEVICES
Part No.
Description
The AD5662’s on-chip precision output amplifier allows rail-to-
rail output swing to be achieved. For remote sensing applications,
the output amplifier’s inverting input is available to the user.
AD5620/AD5640/AD5660
3 V/5 V 12-/14-/16-bit DAC with
internal reference in SOT-23
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
www.analog.com
©2005–2010 Analog Devices, Inc. All rights reserved.
AD5662
TABLE OF CONTENTS
Specifications..................................................................................... 3
Timing Characteristics..................................................................... 5
Absolute Maximum Ratings............................................................ 6
ESD Caution.................................................................................. 6
Pin Configuration and Function Description .............................. 7
Typical Performance Characteristics ............................................. 8
Terminology .................................................................................... 13
Theory of Operation ...................................................................... 14
DAC Section................................................................................ 14
Resistor String............................................................................. 14
Output Amplifier........................................................................ 14
Serial Interface............................................................................ 14
Input Shift Register .................................................................... 15
Power-On Reset.......................................................................... 15
Power-Down Modes .................................................................. 16
Microprocessor Interfacing ...................................................... 16
Applications..................................................................................... 18
Choosing a Reference for the AD5662.................................... 18
Using a Reference as a Power Supply for the AD5662 .......... 18
Bipolar Operation Using the AD5662..................................... 19
Using the AD5662 as an Isolated, Programmable, 4-20 mA
Process Controller...................................................................... 19
Using AD5662 with a Galvanically Isolated Interface........... 20
Power Supply Bypassing and Grounding................................ 20
Outline Dimensions....................................................................... 21
Ordering Guide .......................................................................... 22
Automotive Products................................................................. 22
SYNC
Interrupt .......................................................................... 15
REVISION HISTORY
12/10—Rev. 0 to Rev. A
Changes to Features Section.............................................................1
Changes to Ordering Guide ...........................................................22
Added Automotive Products Section ...........................................22
1/05—Revision 0: Initial Version
Rev. A | Page 2 of 24
AD5662
SPECIFICATIONS
VDD = 2.7 V to 5.5 V; RL = 2 kΩ to GND; CL = 200 pF to GND; VREF = VDD; all specifications TMIN to TMAX, unless otherwise noted.
Table 1.
A Grade
Min Typ
B Grade
Min Typ
Y Version1
Conditions/Comments
Parameter
STATIC PERFORMANCE2
Max
Max
Unit
Resolution
Relative Accuracy
Differential Nonlinearity
16
16
Bits
LSB
LSB
±±
±32
±1
±±
±16
±1
See Figure 4
Guaranteed monotonic by design
See Figure 5
Zero Code Error
Full-Scale Error
Offset Error
Gain Error
Zero Code Error Drift3
Gain Temperature Coefficient3
DC Power Supply Rejection Ratio3
OUTPUT CHARACTERISTICS3
Output Voltage Range
Output Voltage Settling Time
2
−0.2
10
−1
±10
±1.5
2
−0.2
10
−1
±10
±1.5
mV
% FSR
mV
% FSR
μV/°C
ppm
dB
All 0s loaded to DAC register
All 1s loaded to DAC register
±2
±2.5
−100
±2
±2.5
−100
Of FSR/°C
DAC code = midscale; VDD = 5 V/3 V ±10%
0
VDD
10
0
VDD
10
V
μs
±
±
¼ to ¾ scale change settling to ±2 LSB
RL = 2 kΩ; 0 pF < CL < 200 pF
Slew Rate
Capacitive Load Stability
1.5
2
1.5
2
V/μs
nF
¼ to ¾ scale
RL = ∞
10
100
10
−±0
5
0.1
0.5
30
4
10
100
10
−±0
5
0.1
0.5
30
4
nF
RL = 2 kΩ
Output Noise Spectral Density4
Output Noise (0.1 Hz to 10 Hz)4
Total Harmonic Distortion (THD)4
Digital-to-Analog Glitch Impulse
Digital Feedthrough
DC Output Impedance
Short-Circuit Current4
Power-Up Time
nV/√Hz DAC code = midscale,10 kHz
μV p-p
dB
nV-s
nV-s
Ω
mA
μs
DAC code = midscale
VREF = 2 V ± 300 mV p-p, f = 5 kHz
1 LSB change around major carry
VDD = 5 V, 3 V
Coming out of power-down mode
VDD = 5 V, 3 V
REFERENCE INPUT3
Reference Current
40
30
75
50
VDD
40
30
75
50
VDD
μA
μA
V
VREF = VDD = 5 V
VREF = VDD = 3.6 V
Reference Input Range5
Reference Input Impedance
LOGIC INPUTS3
0.75
0.75
125
125
kΩ
Input Current
±2
0.±
±2
0.±
μA
V
V
All digital inputs
VDD = 5 V, 3 V
VDD = 5 V, 3 V
VINL, Input Low Voltage
VINH, Input High Voltage
Pin Capacitance
2
2
3
3
pF
Rev. A | Page 3 of 24
AD5662
A Grade
Min Typ
B Grade
Min Typ
Y Version1
Conditions/Comments
Parameter
Max
Max
Unit
POWER REQUIREMENTS
VDD
2.7
5.5
2.7
5.5
V
All digital inputs at 0 V or VDD
DAC active and excluding load current
VIH = VDD and VIL = GND
IDD (Normal Mode)
VDD = 4.5 V to 5.5 V
VDD = 2.7 V to 3.6 V
IDD (All Power-Down Modes)
VDD = 4.5 V to 5.5 V
VDD = 2.7 V to 3.6 V
POWER EFFICIENCY
IOUT/IDD
150
140
250
225
150
140
250
225
μA
μA
VIH = VDD and VIL = GND
0.4±
0.1
1
0.4±
0.1
1
μA
VIH = VDD and VIL = GND
VIH = VDD and VIL = GND
0.375
0.375 μA
90
90
%
ILOAD = 2 mA. VDD = 5 V
1 Temperature range is as follows: Y version: −40°C to +125°C, typical at +25°C.
2 DC specifications tested with the outputs unloaded, unless otherwise stated. Linearity calculated using a reduced code range of 512 to 65024.
3 Guaranteed by design and characterization; not production tested.
4 Output unloaded.
5 Reference input range at ambient where ±1 LSB max DNL specification is achievable.
Rev. A | Page 4 of 24
AD5662
TIMING CHARACTERISTICS
All input signals are specified with tr = tf = 1 ns/V (10% to 90% of VDD) and timed from a voltage level of (VIL + VIH)/2. See Figure 2.
DD = 2.7 V to 5.5 V; all specifications TMIN to TMAX, unless otherwise noted.
V
Table 2.
Limit at TMIN, TMAX
VDD = 2.7 V to 3.6 V VDD = 3.6 V to 5.5 V
Parameter
Unit
Conditions/Comments
SCLK cycle time
SCLK high time
SCLK low time
SYNC to SCLK falling edge setup time
Data setup time
1
t1
50
13
13
13
5
33
13
13
13
5
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
t2
t3
t4
t5
t6
t7
t±
t9
t10
4.5
0
4.5
0
Data hold time
SCLK falling edge to SYNC rising edge
Minimum SYNC high time
SYNC rising edge to SCLK fall ignore
SCLK falling edge to SYNC fall ignore
50
13
0
33
13
0
1 Maximum SCLK frequency is 30 MHz at VDD = 3.6 V to 5.5 V, and 20 MHz at VDD = 2.7 V to 3.6 V.
t10
t1
t9
SCLK
t2
t8
t3
t7
t4
SYNC
DIN
t6
t5
DB23
DB0
Figure 2. Serial Write Operation
Rev. A | Page 5 of 24
AD5662
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 3.
Parameter
Rating
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those listed in the operational sections
of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
VDD to GND
VOUT to GND
VFB to GND
VREF to GND
−0.3 V to +7 V
−0.3 V to VDD + 0.3 V
−0.3 V to VDD + 0.3 V
−0.3 V to VDD + 0.3 V
−0.3 V to VDD + 0.3 V
Digital Input Voltage to GND
Operating Temperature Range
Industrial (Y Version)
Storage Temperature Range
Junction Temperature (TJ max)
Power Dissipation
SOT-23 Package (4-Layer Board)
θJA Thermal Impedance
MSOP Package (4-Layer Board)
θJA Thermal Impedance
θJC Thermal Impedance
Reflow Soldering Peak Temperature
SnPb
−40°C to +125°C
−65°C to +150°C
150°C
(TJ max − TA)/θJA
119°C/W
141°C/W
44°C/W
240°C
260°C
2 kV
Pb-free
ESD
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on
the human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. A | Page 6 of 24
AD5662
PIN CONFIGURATION AND FUNCTION DESCRIPTION
V
1
2
3
4
8
7
6
5
GND
DIN
DD
AD5662
V
REF
TOP VIEW
V
SCLK
SYNC
(Not to Scale)
FB
V
OUT
Figure 3. Pin Configuration
Table 4. Pin Function Descriptions
Pin No. Mnemonic Function
1
2
3
4
5
VDD
VREF
VFB
VOUT
SYNC
Power Supply Input. These parts can be operated from 2.7 V to 5.5 V. VDD should be decoupled to GND.
Reference Voltage Input.
Feedback Connection for the Output Amplifier. VFB should be connected to VOUT for normal operation.
Analog Output Voltage from DAC. The output amplifier has rail-to-rail operation.
Level-Triggered Control Input (Active Low). This is the frame synchronization signal for the input data. When SYNC
goes low, it enables the input shift register, and data is transferred in on the falling edges of the following clocks.
The DAC is updated following the 24th clock cycle unless SYNC is taken high before this edge, in which case the
rising edge of SYNC acts as an interrupt and the write sequence is ignored by the DAC.
6
7
±
SCLK
DIN
Serial Clock Input. Data is clocked into the input shift register on the falling edge of the serial clock input. Data can
be transferred at rates up to 30 MHz.
Serial Data Input. This device has a 24-bit shift register. Data is clocked into the register on the falling edge of the
serial clock input.
GND
Ground Reference Point for All Circuitry on the Part.
Rev. A | Page 7 of 24
AD5662
TYPICAL PERFORMANCE CHARACTERISTICS
8
6
10
V
= V = 5V
DD
T = 25°C
A
REF
8
MAX INL
V
= V
= 5V
REF
DD
6
4
2
4
2
MAX DNL
MIN DNL
0
–2
–4
0
–2
–4
–6
–8
–6
–8
MIN INL
100
–10
0
5k 10k 15k 20k 25k 30k 35k 40k 45k 50k 55k 60k 65k
CODE
–40
–20
0
20
40
60
80
120
TEMPERATURE (°C)
Figure 7. INL Error and DNL Error vs. Temperature
Figure 4. Typical INL Plot
10
MAX INL
8
6
V
= 5V
DD
= 25°C
4
T
A
2
MAX DNL
MIN DNL
0
–2
–4
–6
MIN INL
4.25
–8
–10
0.75 1.25
1.75
2.25
2.75
3.25
(V)
3.75
4.75
V
REF
Figure 5. Typical DNL Plot
Figure 8. INL and DNL Error vs. VREF
90
80
70
60
50
40
30
20
8
6
V
= V
= 5V
REF
DD
= 25°C
T
A
MAX INL
T
= 25°C
A
4
2
MAX DNL
MIN DNL
0
–2
–4
–6
–8
MIN INL
10
0
511
10511
20511
30511
CODES
40511
50511
60511
2.7
3.2
3.7
4.2
(V)
4.7
5.2
V
DD
Figure 6. Typical Total Unadjusted Error Plot
Figure 9. INL and DNL Error vs. Supply
Rev. A | Page ± of 24
AD5662
1.0
0
–0.22
–0.04
–0.06
–0.08
V
= 5V
T
= 25°C
DD
A
0.5
0
ZERO-SCALE ERROR
GAIN ERROR
–0.5
–1.0
–1.5
–0.01
–0.12
–0.14
–0.16
FULL-SCALE ERROR
–2.0
–2.5
OFFSET ERROR
–0.18
–0.20
2.7
3.2
3.7
4.2
(V)
4.7
5.2
–40
–20
0
20
40
60
°
80
100
120
V
TEMPERATURE (
C)
DD
Figure 10. Gain Error and Full-Scale Error vs. Temperature
Figure 13. Zero-Scale and Offset Error vs. Supply
1.5
20
18
16
14
12
10
8
V
T
= V
°
= 5.5V
REF
C
DD
= 25
1.0
ZERO-SCALE ERROR
A
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
6
OFFSET ERROR
4
2
0
–40
–20
0
20
40
60
80
100
120
TEMPERATURE (
°
C)
I
(μA)
DD
Figure 11. Zero-Scale and Offset Error vs. Temperature
Figure 14. IDD Histogram with VDD = 5.5 V
1.0
0.20
DAC LOADED WITH
ZERO SCALE –
SINKING CURRENT
V
= V
= 5V, 3V
REF
DD
= 25°C
T
0.15
0.10
0.05
0
A
0.5
0
GAIN ERROR
FULL-SCALE ERROR
–0.5
–1.0
–0.05
–0.10
–0.15
–1.5
–2.0
DAC LOADED WITH
FULL SCALE –
–0.20
–0.25
SOURCING CURRENT
2.7
3.2
3.7
4.2
(V)
4.7
5.2
–5
–4
–3
–2
–1
0
1
2
3
4
5
V
DD
I (mA)
Figure 12. Gain Error and Full-Scale Error vs. Supply
Figure 15. Headroom at Rails vs. Source and Sink Current
Rev. A | Page 9 of 24
AD5662
250
T
1000
900
= 25°C
T = 25°C
A
V
V
= V
= V
= 5V
= 3V
A
DD
DD
REF
REF
V
= 5V
DD
200
150
100
800
700
600
500
400
300
50
0
200
100
V
= 3V
DD
0
512
10512
20512
30512
CODE
40512
50512
60512
0
1
2
3
4
5
V
(V)
LOGIC
Figure 16. Supply Current vs. Code
Figure 19. Supply Current vs. Logic Input Voltage
160
140
V
V
=5V
DD
V
= V = 3V
REF
DD
= 25°C
T
A
120
100
80
60
40
20
0
= 3V
DD
FULL-SCALE CODE CHANGE
0x0000 TO 0xFFFF
OUTPUT LOADED WITH 2kΩ
AND 200pF TO GND
V
= 455mV/DIV
OUT
TIME BASE = 4μs/DIV
–40
–20
0
20
40
60
80
100
120
TEMPERATURE (°C)
Figure 20. Full-Scale Settling Time, 3 V
Figure 17. Supply Current vs. Temperature
160
140
120
100
80
T
= 25°C
A
V
= V = 5V
REF
DD
= 25°C
T
A
FULL-SCALE CODE CHANGE
0x0000 TO 0xFFFF
OUTPUT LOADED WITH 2kΩ
AND 200pF TO GND
60
V
= 909mV/DIV
OUT
40
1
20
0
TIME BASE = 4μs/DIV
2.7
3.2
3.7
4.2
(V)
4.7
5.2
V
DD
Figure 21. Full-Scale Settling Time, 5 V
Figure 18. Supply Current vs. Supply Voltage
Rev. A | Page 10 of 24
AD5662
2.502500
2.502250
2.502000
2.501750
2.501500
V
T
= V
= 5V
REF
V
T
= V
= 5V
REF
DD
= 25°C
DD
= 25°C
A
A
13nS/SAMPLE NUMBER
1 LSB CHANGE AROUND
MIDSCALE (0x8000 TO 0x7FFF)
GLITCH IMPULSE = 2.723nV.s
2.501250
2.501000
2.500750
2.500500
V
DD
1
2
2.500250
2.500000
2.499750
2.499500
MAX(C2)*
420.0mV
2.499250
2.499000
2.498750
V
OUT
CH2 500mV
CH1 2.0V
M100μs 125MS/s
A CH1 1.28V
8.0ns/pt
0
50 100 150 200 250 300 350 400 450 500 550
SAMPLE NUMBER
Figure 22. Power-On Reset to 0 V
Figure 25. Digital-to-Analog Glitch Impulse (Negative)
2.500400
V
= V
= 5V
REF
DD
= 25°C
T
A
2.500300
2.500200
2.500100
2.500000
2.499900
V
DD
1
2
2.499800
2.499700
2.499600
2.499500
2.499400
V
= V = 5V
REF
DD
= 25°C
T
A
13nS/SAMPLE NUMBER
2.499300
2.499200
2.499100
1 LSB CHANGE AROUND
MIDSCALE (0x7FFF TO 0x8000)
GLITCH IMPULSE = 1.271nV.s
V
OUT
CH2 1.0V
CH1 2.0V
M100μs 125MS/s
A CH1 1.28V
8.0ns/pt
0
50 100 150 200 250 300 350 400 450 500 550
SAMPLE NUMBER
Figure 23. Power-On Reset to Midscale
Figure 26. Digital-to-Analog Glitch Impulse (Positive)
2.500250
V
= V
= 5V
REF
DD
= 25°C
2.500200
2.500150
2.500100
T
A
20nS/SAMPLE NUMBER
DAC LOADED WITH MIDSCALE
DIGITAL FEEDTHROUGH = 0.06nV.s
2.500050
2.500000
SCLK
2.499950
2.499900
2.499850
1
2
2.499800
2.499750
2.499700
2.499650
2.499600
V
OUT
CH2 1.0V
CH1 2.0V
M1.0μs 5.0gS/s
A CH2 2.16V
200ps/pt
0
50 100 150 200 250 300 350 400 450 500 550
SAMPLE NUMBER
Figure 24. Exiting Power-Down to Midscale
Figure 27. Digital Feedthrough
Rev. A | Page 11 of 24
AD5662
–20
V
= 5V
DD
= 25°C
V
T
= V = 5V
REF
DD
= 25°C
T
A
–30
–40
A
DAC LOADED WITH FULL SCALE
V
DAC LOADED WITH MIDSCALE
= 2V ± 0.3Vp-p
REF
–50
–60
–70
1
–80
–90
Y AXIS = 2μV/DIV
X AXIS = 4s/DIV
–100
2k
4k
6k
8k
10k
Hz
Figure 30. 0.1 Hz to 10 Hz Output Noise Plot
Figure 28. Total Harmonic Distortion
16
14
12
10
8
800
700
600
500
400
300
V
T
= V = 5V
REF
V
T
= V
DD
= 25°C
DD
= 25°C
REF
A
A
V
= 3V
DD
V
= 5V
DD
200
100
0
6
4
0
1
2
3
4
5
6
7
8
9
10
10
100
1k
10k
100k
1M
CAPACITANCE (nF)
FREQUENCY (Hz)
Figure 31. Noise Spectral Density
Figure 29. Settling Time vs. Capacitive Load
Rev. A | Page 12 of 24
AD5662
TERMINOLOGY
Relative Accuracy or Integral Nonlinearity (INL)
Offset Error
For the DAC, relative accuracy or integral nonlinearity is a
measurement of the maximum deviation, in LSBs, from a
straight line passing through the endpoints of the DAC transfer
function. A typical INL vs. code plot can be seen in Figure 4.
Offset error is a measure of the difference between VOUT (actual)
and VOUT (ideal) expressed in mV in the linear region of the
transfer function. Offset error is measured on the AD5662 with
Code 512 loaded in the DAC register. It can be negative or positive.
DC Power Supply Rejection Ratio (PSRR)
Differential Nonlinearity (DNL)
This indicates how the output of the DAC is affected by changes
in the supply voltage. PSRR is the ratio of the change in VOUT to a
change in VDD for full-scale output of the DAC. It is measured in
dB. VREF is held at 2 V, and VDD is varied by 10%.
Differential nonlinearity is the difference between the measured
change and the ideal 1 LSB change between any two adjacent
codes. A specified differential nonlinearity of 1 LSB maximum
ensures monotonicity. This DAC is guaranteed monotonic by
design. A typical DNL vs. code plot can be seen in Figure 5.
Output Voltage Settling Time
This is the amount of time it takes for the output of a DAC to settle
to a specified level for a ¼ to ¾ full-scale input change and is
measured from the 24th falling edge of SCLK.
Zero-Code Error
Zero-code error is a measurement of the output error when
zero code (0x0000) is loaded to the DAC register. Ideally, the
output should be 0 V. The zero-code error is always positive in
the AD5662 because the output of the DAC cannot go below
0 V. It is due to a combination of the offset errors in the DAC
and the output amplifier. Zero-code error is expressed in mV. A
plot of zero-code error vs. temperature can be seen in Figure 11.
Digital-to-Analog Glitch Impulse
Digital-to-analog glitch impulse is the impulse injected into the
analog output when the input code in the DAC register changes
state. It is normally specified as the area of the glitch in nV-s,
and is measured when the digital input code is changed by
1 LSB at the major carry transition (0x7FFF to 0x8000). See
Figure 25 and Figure 26.
Full-Scale Error
Full-scale error is a measurement of the output error when full-
scale code (0xFFFF) is loaded to the DAC register. Ideally, the
output should be VDD − 1 LSB. Full-scale error is expressed in
percent of full-scale range. A plot of full-scale error vs.
temperature can be seen in Figure 10.
Digital Feedthrough
Digital feedthrough is a measure of the impulse injected into
the analog output of the DAC from the digital inputs of the
DAC, but is measured when the DAC output is not updated. It
is specified in nV-s, and measured with a full-scale code change
on the data bus, that is, from all 0s to all 1s and vice versa.
Gain Error
This is a measure of the span error of the DAC. It is the deviation
in slope of the DAC transfer characteristic from ideal expressed
as a percent of the full-scale range.
Total Harmonic Distortion (THD)
This is the difference between an ideal sine wave and its attenuated
version using the DAC. The sine wave is used as the reference for
the DAC, and the THD is a measurement of the harmonics present
on the DAC output. It is measured in dB.
Total Unadjusted Error (TUE)
Total unadjusted error is a measurement of the output error,
taking all the various errors into account. A typical TUE vs.
code plot can be seen in Figure 6.
Noise Spectral Density
This is a measurement of the internally generated random noise.
Random noise is characterized as a spectral density (voltage per
√Hz). It is measured by loading the DAC to midscale and meas-
uring noise at the output. It is measured in nV/√Hz. A plot of
noise spectral density can be seen in Figure 31.
Zero-Code Error Drift
This is a measurement of the change in zero-code error with a
change in temperature. It is expressed in μV/°C.
Gain Temperature Coefficient
This is a measurement of the change in gain error with changes
in temperature. It is expressed in (ppm of full-scale range)/°C.
Rev. A | Page 13 of 24
AD5662
THEORY OF OPERATION
DAC SECTION
OUTPUT AMPLIFIER
The AD5662 DAC is fabricated on a CMOS process. The
architecture consists of a string DAC followed by an output
buffer amplifier. Figure 32 shows a block diagram of the DAC
architecture.
The output buffer amplifier can generate rail-to-rail voltages on
its output, which gives an output range of 0 V to VDD. This output
buffer amplifier has a gain of 2 derived from a 50 kΩ resistor
divider network in the feedback path. The output amplifier’s
inverting input is available to the user, allowing for remote
sensing. This VFB pin must be connected to VOUT for normal
operation. It can drive a load of 2 kΩ in parallel with 1000 pF to
GND. The source and sink capabilities of the output amplifier can
be seen in Figure 15. The slew rate is 1.5 V/μs with a ¼ to ¾
full-scale settling time of 10 μs.
V
DD
R
V
FB
R
REF (+)
RESISTOR
STRING
V
DAC REGISTER
OUT
REF (–ꢀ)
OUTPUT
AMPLIFIER
GND
SERIAL INTERFACE
The AD5662 has a 3-wire serial interface (
, SCLK, and
SYNC
Figure 32. DAC Architecture
DIN) that is compatible with SPI, QSPI, and MICROWIRE
interface standards as well as with most DSPs. See Figure 2 for
a timing diagram of a typical write sequence.
Since the input coding to the DAC is straight binary, the ideal
output voltage is given by
The write sequence begins by bringing the
line low. Data
SYNC
D
65,536
⎛
⎜
⎞
⎟
VOUT = VREF
×
from the DIN line is clocked into the 24-bit shift register on the
falling edge of SCLK. The serial clock frequency can be as high
as 30 MHz, making the AD5662 compatible with high speed
DSPs. On the 24th falling clock edge, the last data bit is clocked
in and the programmed function is executed, that is, a change
in DAC register contents and/or a change in the mode of opera-
⎝
⎠
where D is the decimal equivalent of the binary code that is
loaded to the DAC register. It can range from 0 to 65,535.
RESISTOR STRING
tion. At this stage, the
high. In either case, it must be brought high for a minimum of
33 ns before the next write sequence so that a falling edge of
line can be kept low or be brought
SYNC
The resistor string section is shown in Figure 33. It is simply a
string of resistors, each of value R. The code loaded to the DAC
register determines at which node on the string the voltage is
tapped off to be fed into the output amplifier. The voltage is
tapped off by closing one of the switches connecting the string
to the amplifier. Because it is a string of resistors, it is guaranteed
monotonic.
can initiate the next write sequence. Since the
SYNC
buffer draws more current when VIN = 2.4 V than it does when
IN = 0.8 V, should be idled low between write sequences
SYNC
V
SYNC
for even lower power operation. As mentioned previously it
must, however, be brought high again just before the next write
sequence.
R
R
TO OUTPUT
R
AMPLIFIER
R
R
Figure 33. Resistor String
Rev. A | Page 14 of 24
AD5662
24th falling edge, this acts as an interrupt to the write sequence.
The shift register is reset and the write sequence is seen as
invalid. Neither an update of the DAC register contents nor a
change in the operating mode occurs (see Figure 35).
INPUT SHIFT REGISTER
The input shift register is 24 bits wide (see Figure 34). The first
six bits are don’t cares. The next two are control bits that control
the part’s mode of operation (normal mode or any one of three
power-down modes). See the Power-Down Modes section for a
more complete description of the various modes. The next 16
bits are the data bits. These are transferred to the DAC register
on the 24th falling edge of SCLK.
POWER-ON RESET
The AD5662 family contains a power-on reset circuit that
controls the output voltage during power-up. The AD5662x-1
DAC output powers up to 0 V, and the AD5662x-2 DAC output
powers up to midscale. The output remains there until a valid
write sequence is made to the DAC. This is useful in
SYNC INTERRUPT
In a normal write sequence, the
line is kept low for at
SYNC
applications where it is important to know the state of the
output of the DAC while it is in the process of powering up.
least 24 falling edges of SCLK, and the DAC is updated on the
24th falling edge. However, if
is brought high before the
SYNC
DB23 (MSB)
DBO (LSB)
X
X
X
X
X
X
PD1 PD0 D15 D14 D13 D12 D11 D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
DATA BITS
NORMAL OPERATION
0
0
1
1
0
1
0
1
1 kΩ TO GND
100 kΩ TO GND
POWER-DOWN MODES
THREE-STATE
Figure 34. Input Register Contents
SCLK
SYNC
DIN
DB23
DB0
DB23
DB0
INVALID WRITE SEQUENCE:
SYNC HIGH BEFORE 24TH FALLING EDGE
VALID WRITE SEQUENCE, OUTPUT UPDATES
ON THE 24TH FALLING EDGE
SYNC
Figure 35.
Interrupt Facility
Rev. A | Page 15 of 24
AD5662
MICROPROCESSOR INTERFACING
POWER-DOWN MODES
The AD5662 contains four separate modes of operation. These
modes are software-programmable by setting two bits (DB17
and DB16) in the control register. Table 5 shows how the state
of the bits corresponds to the device’s mode of operation.
AD5662 to Blackfin® ADSP-BF53x Interface
Figure 37 shows a serial interface between the AD5662 and
the Blackfin ADSP-BF53x microprocessor. The ADSP-BF53x
processor family incorporates two dual-channel synchronous
serial ports, SPORT1 and SPORT0, for serial and multiprocessor
communications. Using SPORT0 to connect to the AD5662, the
setup for the interface is as follows. DT0PRI drives the DIN pin
of the AD5662, while TSCLK0 drives the SCLK of the part. The
Table 5. Modes of Operation for the AD5662
DB17
DB16
Operating Mode
Normal Operation
Power-Down Modes
1 kΩ to GND
100 kΩ to GND
Three-State
0
0
0
1
1
1
0
1
is driven from TFS0.
SYNC
ADSP-BF53x*
AD5662*
When both bits are set to 0, the part works normally with its
normal power consumption of 250 μA at 5 V. However, for the
three power-down modes, the supply current falls to 480 nA at
5 V (100 nA at 3 V). Not only does the supply current fall, but
the output stage is also internally switched from the output of
the amplifier to a resistor network of known values. This has the
advantage that the output impedance of the part is known while
the part is in power-down mode. The outputs can either be
connected internally to GND through a 1 kΩ or 100 kΩ
resistor, or left open-circuited (three-state) (see Figure 36).
TFS0
DTOPRI
TSCLK0
SYNC
DIN
SCLK
*ADDITIONAL PINS OMITTED FOR CLARITY
Figure 37. AD5662 to Blackfin ADSP-BF53x Interface
AD5662 to 68HC11/68L11 Interface
Figure 38 shows a serial interface between the AD5662 and the
68HC11/68L11 microcontroller. SCK of the 68HC11/68L11
drives the SCLK of the AD5662, while the MOSI output drives
the serial data line of the DAC.
RESISTOR
AMPLIFIER
V
OUT
STRING DAC
The
signal is derived from a port line (PC7). The setup
SYNC
POWER-DOWN
CIRCUITRY
conditions for correct operation of this interface are as follows.
The 68HC11/68L11 is configured with its CPOL bit as a 0 and
its CPHA bit as a 1. When data is being transmitted to the DAC,
RESISTOR
NETWORK
the
line is taken low (PC7). When the 68HC11/ 68L11 is
SYNC
Figure 36. Output Stage During Power-Down
configured as described above, data appearing on the MOSI
output is valid on the falling edge of SCK. Serial data from the
68HC11/68L11 is transmitted in 8-bit bytes with only eight
falling clock edges occurring in the transmit cycle. Data is
transmitted MSB first. In order to load data to the AD5662, PC7
is left low after the first eight bits are transferred, and a second
serial write operation is performed to the DAC; PC7 is taken
high at the end of this procedure.
The bias generator, the output amplifier, the resistor string, and
other associated linear circuitry are shut down when power-
down mode is activated. However, the contents of the DAC
register are unaffected when in power-down. The time to exit
power-down is typically 4 μs for VDD = 5 V and for VDD = 3 V
(see Figure 24).
68HC11/68L11*
AD5662*
PC7
SCK
SYNC
SCLK
DIN
MOSI
*ADDITIONAL PINS OMITTED FOR CLARITY
Figure 38. AD5662 to 68HC11/68L11 Interface
Rev. A | Page 16 of 24
AD5662
AD5662 to 80C51/80L51 Interface
AD5662 to MICROWIRE Interface
Figure 39 shows a serial interface between the AD5662 and the
80C51/80L51 microcontroller. The setup for the interface is as
follows. TxD of the 80C51/80L51 drives SCLK of the AD5662,
Figure 40 shows an interface between the AD5662 and any
MICROWIRE-compatible device. Serial data is shifted out on
the falling edge of the serial clock and is clocked into the AD5662
on the rising edge of the SK.
while RxD drives the serial data line of the part. The
SYNC
signal is again derived from a bit-programmable pin on the port.
In this case, port line P3.3 is used. When data is to be transmitted
to the AD5662, P3.3 is taken low. The 80C51/80L51 transmits
data in 8-bit bytes only; thus only eight falling clock edges occur
in the transmit cycle. To load data to the DAC, P3.3 is left low
after the first eight bits are transmitted, and a second write cycle
is initiated to transmit the second byte of data. P3.3 is taken
high following the completion of this cycle. The 80C51/80L51
outputs the serial data in a format that has the LSB first. The
AD5662 must receive data with the MSB first. The 80C51/80L51
transmit routine should take this into account.
AD5662*
MICROWIRE*
CS
SK
SO
SYNC
SCLK
DIN
*ADDITIONAL PINS OMITTED FOR CLARITY
Figure 40. AD5662 to MICROWIRE Interface
AD5662*
80C51/80L51*
P3.3
TxD
RxD
SYNC
SCLK
DIN
*ADDITIONAL PINS OMITTED FOR CLARITY
Figure 39. AD5662 to 80C51/80L51 Interface
Rev. A | Page 17 of 24
AD5662
APPLICATIONS
USING A REFERENCE AS A
POWER SUPPLY FOR THE AD5662
CHOOSING A REFERENCE FOR THE AD5662
To achieve the optimum performance from the AD5662,
thought should be given to the choice of a precision voltage
reference. The AD5662 has only one reference input, VREF. The
voltage on the reference input is used to supply the positive
input to the DAC. Therefore any error in the reference is
reflected in the DAC.
Because the supply current required by the AD5662 is extremely
low, an alternative option is to use a voltage reference to supply
the required voltage to the part (see Figure 41). This is especially
useful if the power supply is quite noisy, or if the system supply
voltages are at some value other than 5 V or 3 V, for example,
15 V. The voltage reference outputs a steady supply voltage for
the AD5662; see Table 6 for a suitable reference. If the low drop-
out REF195 is used, it must supply 250 μA of current to the
AD5662, with no load on the output of the DAC. When the
DAC output is loaded, the REF195 also needs to supply the
current to the load. The total current required (with a 5 kΩ
load on the DAC output) is
When choosing a voltage reference for high accuracy applica-
tions, the sources of error are initial accuracy, ppm drift, long-
term drift, and output voltage noise. Initial accuracy on the
output voltage of the DAC leads to a full-scale error in the
DAC. To minimize these errors, a reference with high initial
accuracy is preferred. Also, choosing a reference with an output
trim adjustment, such as the ADR423, allows a system designer
to trim system errors out by setting a reference voltage to a
voltage other than the nominal. The trim adjustment can also
be used at temperature to trim out any error.
250 μA + (5 V/5 kΩ) = 1.25 mA
The load regulation of the REF195 is typically 2 ppm/mA,
which results in a 2.5 ppm (12.5 μV) error for the 1.25 mA
current drawn from it. This corresponds to a 0.164 LSB error.
Long-term drift is a measurement of how much the reference
drifts over time. A reference with a tight long-term drift
specification ensures that the overall solution remains relatively
stable during its entire lifetime.
+15V
+5V
REF195
250μA
The temperature coefficient of a reference’s output voltage
effect INL, DNL, and TUE. A reference with a tight temperature
coefficient specification should be chosen to reduce temperature
dependence of the DAC output voltage in ambient conditions.
V
V
REF
DD
SYNC
SCLK
DIN
3-WIRE
SERIAL
INTERFACE
V
= 0V TO 5V
OUT
AD5662
In high accuracy applications, which have a relatively low noise
budget, reference output voltage noise needs to be considered. It
is important to choose a reference with as low an output noise
voltage as practical for the system noise resolution required.
Precision voltage references such as the ADR425 produce low
output noise in the 0.1 Hz to10 Hz range. Examples of recom-
mended precision references for use as supply to the AD5662
are shown in the Table 6.
Figure 41. REF195 as Power Supply to the AD5662
Table 6. Partial List of Precision References for Use with the AD5662
Part No.
ADR425
ADR395
REF195
AD7±0
Initial Accuracy (mV max)
Temp Drift (ppmoC max)
0.1 Hz to 10 Hz Noise (μV p-p typ)
VOUT (V)
±2
±6
±2
±2
±2
3
25
5
3
3
3.4
5
50
4
5
5
5
2.5/3
3
ADR423
3.4
Rev. A | Page 1± of 24
AD5662
USING THE AD5662 AS AN ISOLATED,
PROGRAMMABLE, 4-20 mA PROCESS
CONTROLLER
BIPOLAR OPERATION USING THE AD5662
The AD5662 has been designed for single-supply operation,
but a bipolar output range is also possible using the circuit in
Figure 42. The circuit gives an output voltage range of 5 V.
Rail-to-rail operation at the amplifier output is achievable using
an AD820 or an OP295 as the output amplifier.
In many process control system applications, 2-wire current
transmitters are used to transmit analog signals through noisy
environments. These current transmitters use a zero-scale
signal current of 4 mA that can power the transmitter’s signal
conditioning circuitry. The full-scale output signal in these
transmitters is 20 mA. The converse approach to process
control can also be used; a low-power, programmable current
source can be used to control remotely located sensors or
devices in the loop.
The output voltage for any input code can be calculated as
follows:
⎡
⎤
⎥
⎦
D
65,536
R1+ R2
R1
R2
R1
⎛
⎜
⎞
⎟
⎛
⎜
⎝
⎞
⎟
⎠
⎛
⎜
⎝
⎞
⎟
⎠
VO = V
×
×
−V
×
⎢
DD
DD
⎝
⎠
⎣
A circuit that performs this function is shown in Figure 43.
Using the AD5662 as the controller, the circuit provides a
programmable output current of 4 mA to 20 mA, proportional
to the DAC’s digital code. Biasing for the controller is provided
by the ADR02 and requires no external trim for two reasons:
(1) the ADR02’s tight initial output voltage tolerance and (2)
the low supply current consumption of both the AD8627 and
the AD5662. The entire circuit, including opto-couplers,
consumes less than 3 mA from the total budget of 4 mA. The
AD8627 regulates the output current to satisfy the current
summation at the noninverting node of the AD8627.
where D represents the input code in decimal (0 to 65,535).
With VDD = 5 V, R1 = R2 = 10 kΩ,
10×D
65,536
⎛
⎜
⎞
⎟
VO
=
−5 V
⎝
⎠
This is an output voltage range of 5 V, with 0x0000 corre-
sponding to a −5 V output, and 0xFFFF corresponding to a
+5 V output.
R2 = 10kΩ
+5V
+5V
R1 = 10kΩ
I
OUT = 1/R7 (VDAC × R3/R1 + VREF × R3/R2)
AD820/
OP295
±5V
V
For the values shown in Figure 43,
FB
V
V
OUT
REF
10μF
0.1μF
IOUT = 0.2435 μA × D + 4 mA
AD5662
–5V
where D = 0 ≤ D ≤ 65535, giving a full-scale output current of
20 mA when the AD5662’s digital code equals 0xFFFF. Offset
trim at 4 mA is provided by P2, and P1 provides the circuit’s
gain trim at 20 mA. These two trims do not interact because
the noninverting input of the AD8627 is at virtual ground. The
Schottky diode, D1, is required in this circuit to prevent loop
supply power-on transients from pulling the noninverting input
of the AD8627 more than 300 mV below its inverting input.
Without this diode, such transients could cause phase reversal
of the AD8627 and possible latch-up of the controller. The loop
supply voltage compliance of the circuit is limited by the maxi-
mum applied input voltage to the ADR02 and is from 12 V to
40 V.
THREE-WIRE
SERIAL
INTERFACE
Figure 42. Bipolar Operation with the AD5662
ADR02
V
LOOP
12V TO 36V
R2
18.5kΩ
P2
4mA
ADJUST
SERIAL
LOAD
Q1
2N3904
R1
4.7kΩ
P1
AD5662
AD8627
20mA
R6
3.3kΩ
ADJUST
D1
4mA TO 20mA
R3
1.5kΩ
RL
R7
100Ω
Figure 43. Programmable 4–20 mA Process Controller
Rev. A | Page 19 of 24
AD5662
USING AD5662 WITH A
POWER SUPPLY BYPASSING AND GROUNDING
GALVANICALLY ISOLATED INTERFACE
When accuracy is important in a circuit, it is helpful to carefully
consider the power supply and ground return layout on the
board. The printed circuit board containing the AD5662 should
have separate analog and digital sections, each having its own
area of the board. If the AD5662 is in a system where other
devices require an AGND-to-DGND connection, the connection
should be made at one point only. This ground point should be
as close as possible to the AD5662.
In process-control applications in industrial environments, it is
often necessary to use a galvanically isolated interface to protect
and isolate the controlling circuitry from any hazardous
common-mode voltages that might occur in the area where the
DAC is functioning. Isocouplers provide isolation in excess of
3 kV. The AD5662 uses a 3-wire serial logic interface, so the
ADuM130x 3-channel digital isolator provides the required
isolation (see Figure 44). The power supply to the part also
needs to be isolated, which is done by using a transformer. On
the DAC side of the transformer, a 5 V regulator provides the
5 V supply required for the AD5662.
The power supply to the AD5662 should be bypassed with 10 μF
and 0.1 μF capacitors. The capacitors should be located as close
as possible to the device, with the 0.1 μF capacitor ideally right
up against the device. The 10 μF capacitors are the tantalum
bead type. It is important that the 0.1 μF capacitor has low
effective series resistance (ESR) and effective series inductance
(ESI), for example, common ceramic types of capacitors. This
0.1 μF capacitor provides a low impedance path to ground for
high frequencies caused by transient currents due to internal
logic switching.
+5V
REGULATOR
10μF
0.1μF
POWER
V
DD
SCLK
V1A
V1B
SCLK
SYNC
ADMu103x
AD5662
The power supply line itself should have as large a trace as
possible to provide a low impedance path and to reduce glitch
effects on the supply line. Clocks and other fast switching
digital signals should be shielded from other parts of the board
by digital ground. Avoid crossover of digital and analog signals
if possible. When traces cross on opposite sides of the board,
ensure that they run at right angles to each other to reduce
feedthrough effects through the board. The best board layout
technique is the microstrip technique where the component
side of the board is dedicated to the ground plane only and the
signal traces are placed on the solder side. However, this is not
always possible with a 2-layer board.
VOB
VOC
V
OUT
SDI
V1C
DIN
DATA
GND
Figure 44. AD5662 with a Galvanically Isolated Interface
Rev. A | Page 20 of 24
AD5662
OUTLINE DIMENSIONS
2.90 BSC
8
1
7
2
6
3
5
4
1.60 BSC
2.80 BSC
PIN 1
INDICATOR
0.65 BSC
1.95
BSC
1.30
1.15
0.90
1.45 MAX
0.22
0.08
0.60
0.45
0.30
8°
4°
0°
0.38
0.22
0.15 MAX
SEATING
PLANE
COMPLIANT TO JEDEC STANDARDS MO-178BA
Figure 45. 8-Lead SOT-23
(RJ-8)
Dimensions shown in millimeters
3.00
BSC
8
5
4
4.90
BSC
3.00
BSC
PIN 1
0.65 BSC
1.10 MAX
0.15
0.00
0.80
0.60
0.40
8°
0°
0.38
0.22
0.23
0.08
COPLANARITY
0.10
SEATING
PLANE
COMPLIANT TO JEDEC STANDARDS MO-187AA
Figure 46. 8-Lead Mini Small Outline Package [MSOP]
(RM-8)
Dimensions shown in millimeters
Rev. A | Page 21 of 24
AD5662
ORDERING GUIDE
Package
Description
Package
Option
Power-On
Reset to Code
Model1, 2
Temperature Range
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
Branding
D3±
D9P
D3±
D9P
D39
D39
D9Q
D3±
D9P
D3±
D9P
D36
D9T
D36
D9T
D37
D9R
D37
D9R
D36
D9T
D36
D9T
D9P
Acurracy
AD5662ARJ-1500RL7
AD5662ARJZ-1500RL7
AD5662ARJ-1REEL7
AD5662ARJZ-1REEL7
AD5662ARJ-2500RL7
AD5662ARJ-2REEL7
AD5662ARJZ-2REEL7
AD5662ARM-1
±-lead SOT-23
±-lead SOT-23
±-lead SOT-23
±-lead SOT-23
±-lead SOT-23
±-lead SOT-23
±-lead SOT-23
±-lead MSOP
±-lead MSOP
±-lead MSOP
±-lead MSOP
±-lead SOT-23
±-lead SOT-23
±-lead SOT-23
±-lead SOT-23
±-lead SOT-23
±-lead SOT-23
±-lead SOT-23
±-lead SOT-23
±-lead MSOP
±-lead MSOP
±-lead MSOP
±-lead MSOP
±-lead MSOP
Evaluation Board
RJ-±
RJ-±
RJ-±
RJ-±
RJ-±
RJ-±
RJ-±
RM-±
RM-±
RM-±
RM-±
RJ-±
RJ-±
RJ-±
RJ-±
RJ-±
RJ-±
RJ-±
RJ-±
RM-±
RM-±
RM-±
RM-±
RM-±
Zero
Zero
Zero
Zero
Midscale
Midscale
Midscale
Zero
Zero
Zero
±32 LSB INL
±32 LSB INL
±32 LSB INL
±32 LSB INL
±32 LSB INL
±32 LSB INL
±32 LSB INL
±32 LSB INL
±32 LSB INL
±32 LSB INL
±32 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±16 LSB INL
±32 LSB INL
AD5662ARMZ-1
AD5662ARM-1REEL7
AD5662ARMZ-1REEL7
AD5662BRJ-1500RL7
AD5662BRJZ-1500RL7
AD5662BRJ-1REEL7
AD5662BRJZ-1REEL7
AD5662BRJ-2500RL7
AD5662BRJZ-2500RL7
AD5662BRJ-2REEL7
AD5662BRJZ-2REEL7
AD5662BRM-1
Zero
Zero
Zero
Zero
Zero
Midscale
Midscale
Midscale
Midscale
Zero
Zero
Zero
Zero
Zero
AD5662BRMZ-1
AD5662BRM-1REEL7
AD5662BRMZ-1REEL7
AD5662WARMZ-1REEL7
EVAL-AD5662EBZ
1 Z = RoHS Compliant Part.
2 W = Qualified for Automotive Applications.
AUTOMOTIVE PRODUCTS
The AD5662WARMZ-1REEL7 model is available with controlled manufacturing to support the quality and reliability requirements of
automotive applications. Note that this automotive model may have specifications that differ from the commercial models; therefore,
designers should review the Specifications section of this data sheet carefully. Only the automotive grade product shown is available for
use in automotive applications. Contact your local Analog Devices, Inc., account representative for specific product ordering information
and to obtain the specific Automotive Reliability report for this model.
Rev. A | Page 22 of 24
AD5662
NOTES
Rev. A | Page 23 of 24
AD5662
NOTES
©2005–2010 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D04777–0–12/10(A)
Rev. A | Page 24 of 24
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