ADA4805-2TRMZ-EPR7 [ADI]
Dual, 0.2 µV/°C Offset Drift, 105 MHz Low Power, Low Noise, Rail-to-Rail Amplifier;
| 型号： | ADA4805-2TRMZ-EPR7 |
| 厂家： | 
ADI |
| 描述： | Dual, 0.2 µV/°C Offset Drift, 105 MHz Low Power, Low Noise, Rail-to-Rail Amplifier 放大器 光电二极管 |
| 文件： | 总9页 (文件大小：224K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
0.4 µV/°C Offset Drift, 105 MHz Low Power,
Low Noise, Rail-to-Rail Amplifier
Enhanced Product
ADA4805-2-EP
FEATURES
TYPICAL APPLICATIONS CIRCUIT
+7.5V
Low input offset voltage: 125 µV (maximum)
Low input offset voltage drift
0.4 µV/°C (typical)
5V REF
ADA4805-2-EP
ADR435
VDD
C4
100nF
C2
10µF
C3
0.1µF
2.7 µV/°C (maximum)
Ultralow supply current: 500 µA per amplifier
Fully specified at VS = 3 V, 5 V, 5 V
High speed performance
−3 dB bandwidth: 105 MHz
Slew rate: 160 V/µs
+7.5V
0V TO
REF
ADA4805-2-EP
REF VDD
V
IN+
IN–
R3
20Ω
AD7980
GND
Settling time to 0.1%: 35 ns
Rail-to-rail outputs
C1
2.7nF
Input common-mode range: −VS − 0.1 V to +VS − 1 V
Low noise: 5.9 nV/√Hz at 100 kHz; 0.6 pA/√Hz at 100 kHz
Low distortion: −102 dBc/−126 dBc HD2/HD3 at 100 kHz
Low input bias current: 470 nA (typical)
Small packaging
Figure 1. Driving the AD7980 with the ADA4805-2-EP
The Analog Devices, Inc., proprietary extra fast complementary
bipolar (XFCB) process allows both low voltage and low current
noise (5.9 nV/√Hz, 0.6 pA/√Hz). The ADA4805-2-EP operates
over a wide range of supply voltages from 1.5 V to 5 V, as well as
single 3 V and 5 V supplies, making it ideal for high speed, low
power instruments.
8-lead MSOP
ENHANCED PRODUCT FEATURES
Supports defense and aerospace applications (AQEC standard)
Extended industrial temperature range (−55°C to +125°C)
Controlled manufacturing baseline
1 assembly/test site
1 fabrication site
Enhanced product change notification
Qualification data available upon request
The ADA4805-2-EP is available in an 8-lead MSOP package and is
rated to work over the extended industrial temperature range of
−55°C to +125°C. Additional application and technical infor-
mation can be found in the ADA4805-1/ADA4805-2 data sheet.
0
INPUT FREQUENCY = 10kHz
SNR = 89.4dB
–20
THD = 104dB
SINAD = 89.3dB
–40
APPLICATIONS
High resolution, high precision analog-to-digital converter
(ADC) drivers
–60
–80
Battery-powered instrumentation
Micropower active filters
Portable point of sales terminals
Active radio frequency identification (RFID) readers
Photomultipliers
–100
–120
–140
–160
–180
ADC reference buffers
0
10
20
30
40
50
60
70
80
GENERAL DESCRIPTION
FREQUENCY (kHz)
The ADA4805-2-EP is a high speed voltage feedback, rail-to-rail
output amplifier with an exceptionally low quiescent current of
500 µA, making it ideal for low power, high resolution data
conversion systems. Despite being low power, this amplifier
provides excellent overall performance. It offers a high bandwidth
of 105 MHz at a gain of +1, a high slew rate of 160 V/µs, and a
low input offset voltage of 125 µV (maximum).
Figure 2. FFT Plot for the Circuit Configuration in Figure 1
Table 1. Complementary ADCs to the ADA4805-2-EP
Throughput Resolution SNR
Product ADC Power (mW) (MSPS)
(Bits)
(dB)
AD7982
AD7984
AD7980
AD7685
7.0
10.5
4.0
10
1
1.33
1
18
18
16
16
98
98.5
91
0.25
88
Rev. 0
Document Feedback
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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
Technical Support
©2016 Analog Devices, Inc. All rights reserved.
www.analog.com
ADA4805-2-EP
Enhanced Product
TABLE OF CONTENTS
Features .............................................................................................. 1
Absolute Maximum Ratings ............................................................6
Thermal Resistance.......................................................................6
Maximum Power Dissipation......................................................6
ESD Caution...................................................................................6
Pin Configuration and Function Descriptions..............................7
Typical Performance Characteristics ..............................................8
Outline Dimensions..........................................................................9
Ordering Guide .............................................................................9
Enhanced Product Features ............................................................ 1
Applications....................................................................................... 1
General Description......................................................................... 1
Typical Applications Circuit............................................................ 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
5 V Supply................................................................................... 3
5 V Supply...................................................................................... 4
3 V Supply...................................................................................... 5
REVISION HISTORY
4/16—Revision 0: Initial Version
Rev. 0 | Page 2 of 9
Enhanced Product
ADA4805-2-EP
SPECIFICATIONS
5 V SUPPLY
VS = 5 V at TA = 25°C; RF = 0 Ω for G = +1; otherwise, RF = 1 kΩ; RL = 2 kΩ to ground; unless otherwise noted. All specifications are per
amplifier.
Table 2.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
DYNAMIC PERFORMANCE
−3 dB Bandwidth
G = +1, VOUT = 0.02 V p-p
G = +1, VOUT = 2 V p-p
G = +1, VOUT = 0.02 V p-p
G = +1, VOUT = 2 V step
G = +2, VOUT = 4 V step
G = +1, VOUT = 2 V step
G = +2, VOUT = 4 V step
120
40
18
190
250
35
MHz
MHz
MHz
V/µs
V/µs
ns
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time to 0.1%
78
ns
NOISE/DISTORTION PERFORMANCE
Harmonic Distortion, HD2/HD31
fC = 20 kHz, VOUT = 2 V p-p
−114/−140
−102/−128
−109/−143
−93/−130
−113/−142
−96/−130
5.2
8
44
0.7
dBc
dBc
dBc
dBc
dBc
dBc
nV/√Hz
Hz
nV rms
pA/√Hz
fC = 100 kHz, VOUT = 2 V p-p
fC = 20 kHz, VOUT = 4 V p-p, G = +1
fC = 100 kHz, VOUT = 4 V p-p, G = +1
fC = 20 kHz, VOUT = 4 V p-p, G = +2
fC = 100 kHz, VOUT = 4 V p-p, G = +2
f = 100 kHz
Input Voltage Noise
Input Voltage Noise 1/f Corner Frequency
0.1 Hz to 10 Hz Voltage Noise
Input Current Noise
f = 100 kHz
DC PERFORMANCE
Input Offset Voltage
13
125
2.7
800
25
µV
µV/°C
nA
nA
dB
Input Offset Voltage Drift2
TMIN to TMAX
0.4
550
2.1
111
Input Bias Current
Input Offset Current
Open-Loop Gain
VOUT = −4.0 V to +4.0 V
107
INPUT CHARACTERISTICS
Input Resistance
Common Mode
Differential Mode
Input Capacitance
50
260
1
MΩ
kΩ
pF
V
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
OUTPUT CHARACTERISTICS
Output Overdrive Recovery Time (Rising/Falling Edge)
Output Voltage Swing
Short-Circuit Current
Linear Output Current
Capacitive Load Drive
POWER SUPPLY
−5.1
103
+4
VIN, CM = −4.0 V to +4.0 V
130
dB
VIN = +6 V to −6 V, G = +2
RL = 2 kΩ
Sinking/sourcing
<1% THD at 100 kHz, VOUT = 2 V p-p
30% overshoot
95/100
ns
V
mA
mA
pF
−4.98
2.7
+4.98
85/73
58
15
Operating Range
10
V
Quiescent Current per Amplifier
Power Supply Rejection Ratio
Positive
570
625
µA
+VS = 3 V to 5 V, −VS = −5 V
+VS = 5 V, −VS = −3 V to −5 V
100
100
119
122
dB
dB
Negative
1 fC is the fundamental frequency.
2 Guaranteed, but not tested.
Rev. 0 | Page 3 of 9
ADA4805-2-EP
Enhanced Product
5 V SUPPLY
VS = 5 V at TA = 25°C; RF = 0 Ω for G = +1; otherwise, RF = 1 kΩ; RL = 2 kΩ to midsupply; unless otherwise noted. All specifications are
per amplifier.
Table 3.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
DYNAMIC PERFORMANCE
−3 dB Bandwidth
G = +1, VOUT = 0.02 V p-p
G = +1, VOUT = 2 V p-p
G = +1, VOUT = 0.02 V p-p
G = +1, VOUT = 2 V step
G = +2, VOUT = 4 V step
G = +1, VOUT = 2 V step
G = +2, VOUT = 4 V step
105
35
20
160
220
35
MHz
MHz
MHz
V/µs
V/µs
ns
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time to 0.1%
82
ns
NOISE/DISTORTION PERFORMANCE
Harmonic Distortion, HD2/HD31
fC = 20 kHz, VOUT = 2 V p-p
fC = 100 kHz, VOUT = 2 V p-p
fC = 20 kHz, G = +2, VOUT = 4 V p-p
fC = 100 kHz, G = +2, VOUT = 4 V p-p
f = 100 kHz
−114/−135
−102/−126
−107/−143
−90/−130
5.9
8
54
0.6
dBc
dBc
dBc
dBc
nV/√Hz
Hz
nV rms
pA/√Hz
Input Voltage Noise
Input Voltage Noise 1/f Corner
0.1 Hz to 10 Hz Voltage Noise
Input Current Noise
f = 100 kHz
DC PERFORMANCE
Input Offset Voltage
Input Offset Voltage Drift2
Input Bias Current
Input Offset Current
Open-Loop Gain
9
125
2.7
720
µV
µV/°C
nA
nA
dB
TMIN to TMAX
0.4
470
0.4
109
VOUT = 1.25 V to 3.75 V
105
INPUT CHARACTERISTICS
Input Resistance
Common Mode
Differential Mode
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
OUTPUT CHARACTERISTICS
Overdrive Recovery Time (Rising/Falling
Edge)
50
260
1
MΩ
kΩ
pF
V
−0.1
103
+4
VIN, CM = 1.25 V to 3.75 V
VIN = −1 V to +6 V, G = +2
133
dB
130/145
ns
Output Voltage Swing
Short-Circuit Current
Linear Output Current
Capacitive Load Drive
POWER SUPPLY
RL = 2 kΩ
Sinking/sourcing
<1% THD at 100 kHz, VOUT = 2 V p-p
30% overshoot
0.02
2.7
4.98
V
73/63
47
15
mA
mA
pF
Operating Range
10
V
Quiescent Current per Amplifier
Power Supply Rejection Ratio
Positive
500
520
µA
+VS = 1.5 V to 3.5 V, −VS = −2.5 V
+VS = 2.5 V, −VS = −1.5 V to −3.5 V
100
100
120
126
dB
dB
Negative
1 fC is the fundamental frequency.
2 Guaranteed, but not tested.
Rev. 0 | Page 4 of 9
Enhanced Product
ADA4805-2-EP
3 V SUPPLY
VS = 3 V at TA = 25°C; RF = 0 Ω for G = +1; otherwise, RF = 1 kΩ; RL = 2 kΩ to midsupply; unless otherwise noted. All specifications are
per amplifier.
Table 4.
Parameter
Test Conditions/Comments
Min Typ
Max Unit
DYNAMIC PERFORMANCE
−3 dB Bandwidth
G = +1, VOUT = 0.02 V p-p
G = +1, VOUT = 1 V p-p, +VS = 2 V, −VS = −1 V
G = +1, VOUT = 0.02 V p-p
G = +1, VOUT = 1 V step, +VS = 2 V, −VS = −1 V
G = +1, VOUT = 1 V step
95
30
35
85
41
MHz
MHz
MHz
V/µs
ns
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time to 0.1%
NOISE/DISTORTION PERFORMANCE
Harmonic Distortion, HD2/HD31
fC = 20 kHz, VOUT = 1 V p-p, +VS = 2 V, −VS = −1 V
fC = 100 kHz, VOUT = 1 V p-p, +VS = 2 V, −VS = −1 V
f = 100 kHz
−123/−143
−107/−133
6.3
8
55
0.8
dBc
dBc
nV/√Hz
Hz
nV rms
pA/√Hz
Input Voltage Noise
Input Voltage Noise 1/f Corner
0.1 Hz to 10 Hz Voltage Noise
Input Current Noise
f = 100 kHz
DC PERFORMANCE
Input Offset Voltage
7
125
2.7
690
µV
µV/°C
nA
nA
dB
Input Offset Voltage Drift2
TMIN to TMAX
0.4
440
0.5
107
Input Bias Current
Input Offset Current
Open-Loop Gain
VOUT = 1.1 V to 1.9 V
100
INPUT CHARACTERISTICS
Input Resistance
Common Mode
Differential Mode
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
OUTPUT CHARACTERISTICS
50
260
1
MΩ
kΩ
pF
V
−0.1
89
+2
VIN, CM = 0.5 V to 2 V
117
dB
Output Overdrive Recovery Time
(Rising/Falling Edge)
VIN = −1 V to +4 V, G = +2
135/175
ns
Output Voltage Swing
Short-Circuit Current
Linear Output Current
Capacitive Load Drive
POWER SUPPLY
RL = 2 kΩ
Sinking/sourcing
<1% THD at 100 kHz, VOUT = 1 V p-p
30% overshoot
0.02
2.7
2.98
V
65/47
40
15
mA
mA
pF
Operating Range
10
V
Quiescent Current per Amplifier
Power Supply Rejection Ratio
Positive
470
495
µA
+VS = 1.5 V to 3.5 V, −VS = −1.5 V
+VS = 1.5 V, −VS = −1.5 V to −3.5 V
96
96
119
125
dB
dB
Negative
1 fC is the fundamental frequency.
2 Guaranteed, but not tested.
Rev. 0 | Page 5 of 9
ADA4805-2-EP
Enhanced Product
ABSOLUTE MAXIMUM RATINGS
The quiescent power dissipation is the voltage between the supply
pins (VS) multiplied by the quiescent current (IS).
Table 5.
Parameter
Rating
PD = Quiescent Power + (Total Drive Power − Load Power)
Supply Voltage
11 V
Power Dissipation
See Figure 3
−VS − 0.7 V to +VS + 0.7 V
1 V
−65°C to +125°C
−55°C to +125°C
2
VS VOUT
VOUT
RL
Common-Mode Input Voltage
Differential Input Voltage
Storage Temperature Range
Operating Temperature Range
Lead Temperature (Soldering, 10 sec) 300°C
Junction Temperature 150°C
PD =
(
VS × IS
)
+
×
−
2
RL
RMS output voltages must be considered. If RL is referenced
to −VS, as in single-supply operation, the total drive power is
VS × IOUT. If the rms signal levels are indeterminate, consider the
worst case, when VOUT = VS/4 for RL to midsupply.
2
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
(
VS / 4
)
PD =
(
VS × IS +
)
RL
In single-supply operation with RL referenced to −VS, worst case
is VOUT = VS/2.
Airflow increases heat dissipation, effectively reducing θJA. Also,
more metal directly in contact with the package leads and exposed
pad from metal traces, through holes, ground, and power planes
reduces θJA.
THERMAL RESISTANCE
θJA is specified for the worst case conditions, that is, θJA is specified
for a device soldered in a circuit board for surface-mount packages.
Table 6 lists the θJA for the ADA4805-2-EP.
Figure 3 shows the maximum safe power dissipation in the
package vs. the ambient temperature on a JEDEC standard,
4-layer board. θJA values are approximations.
2.0
Table 6. Thermal Resistance
T
= 150°C
J
Package Type
θJA
Unit
8-Lead MSOP
123.8
°C/W
1.6
1.2
0.8
0.4
0
8-LEAD MSOP
MAXIMUM POWER DISSIPATION
The maximum safe power dissipation for the ADA4805-2-EP is
limited by the associated rise in junction temperature (TJ) on
the die. At approximately 150°C, which is the glass transition
temperature, the properties of the plastic change. Even temporarily
exceeding this temperature limit may change the stresses that the
package exerts on the die, permanently shifting the parametric
performance of the ADA4805-2-EP. Exceeding a junction tempera-
ture of 175°C for an extended period of time can result in changes
in silicon devices, potentially causing degradation or loss of
functionality.
–55
–35
–15
5
25
45
65
85
105
125
AMBIENT TEMPERATURE (°C)
Figure 3. Maximum Power Dissipation vs. Temperature for a 4-Layer Board
The power dissipated in the package (PD) is the sum of the
quiescent power dissipation and the power dissipated in the die
due to the ADA4805-2-EP output load drive.
ESD CAUTION
Rev. 0 | Page 6 of 9
Enhanced Product
ADA4805-2-EP
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
ADA4805-2-EP
V
1
2
3
4
8
7
6
5
+V
OUT1
–IN1
S
V
OUT2
+IN1
–IN2
+IN2
–V
S
Figure 4. 8-Lead MSOP Pin Configuration
Table 7. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
2
3
4
5
6
7
8
VOUT1
−IN1
+IN1
−VS
+IN2
−IN2
VOUT2
+VS
Output 1.
Inverting Input 1.
Noninverting Input 1.
Negative Supply.
Noninverting Input 2.
Inverting Input 2.
Output 2.
Positive Supply.
Rev. 0 | Page 7 of 9
ADA4805-2-EP
Enhanced Product
TYPICAL PERFORMANCE CHARACTERISTICS
RL = 2 kΩ, unless otherwise noted. When G = +1, RF = 0 Ω.
3
0
3
–55°C
+25°C
+125°C
0
+25°C
–3
–55°C
+125°C
–3
–6
–9
–6
–9
V
= ±2.5V
V = ±2.5V
S
S
G = +1
= 20mV p-p
G = +1
V = 2V p-p
OUT
V
R
OUT
= 2kΩ
R = 2kΩ
L
L
–12
0.1
0.1
1
10
FREQUENCY (MHz)
100
1
10
100
1000
FREQUENCY (MHz)
Figure 5. Small Signal Frequency Response for Various Temperatures
Figure 8. Large Signal Frequency Response for Various Temperatures
800
750
700
800
750
700
V
= ±5V
S
V
= ±5V
S
650
600
550
500
450
400
350
300
650
600
550
500
450
400
350
V
= ±2.5V
S
V
= ±1.5V
S
V
= ±2.5V
S
V
= ±1.5V
S
–55 –40 –25 –10
5
20 35 50 65 80 95 110 125
TEMPERATURE (°C)
–55 –40 –25 –10
5
20 35 50 65 80 95 110 125
TEMPERATURE (°C)
Figure 9. Input Bias Current vs. Temperature for Various Supplies
Figure 6. Quiescent Supply Current vs. Temperature for Various Supplies
150
30
V
= ±2.5V
V
= ±2.5V
S
S
T
= –55°C TO +125°C
A
x = 0.43V/°
σ = 0.32V/°C
100
50
25
20
15
10
5
0
–50
–100
–150
0
–55 –40 –25 –10
5
20 35 50 65 80 95 110 125
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE DRIFT (µV/°C)
Figure 7. Input Offset Voltage Drift Distribution
Figure 10. Input Offset Voltage vs. Temperature
Rev. 0 | Page 8 of 9
Enhanced Product
ADA4805-2-EP
OUTLINE DIMENSIONS
3.20
3.00
2.80
8
1
5
4
5.15
4.90
4.65
3.20
3.00
2.80
PIN 1
IDENTIFIER
0.65 BSC
0.95
0.85
0.75
15° MAX
1.10 MAX
0.80
0.55
0.40
0.15
0.05
0.23
0.09
6°
0°
0.40
0.25
COPLANARITY
0.10
COMPLIANT TO JEDEC STANDARDS MO-187-AA
Figure 11. 8-Lead Mini Small Outline Package [MSOP]
(RM-8)
Dimensions shown in millimeters
ORDERING GUIDE
Model1
Temperature Range
Package Description
Package Option
Branding
Y5W
Y5W
ADA4805-2TRMZ-EP
ADA4805-2TRMZ-EPR7
−55°C to +125°C
−55°C to +125°C
8-Lead Mini Small Outline Package [MSOP]
8-Lead Mini Small Outline Package [MSOP]
RM-8
RM-8
1 Z = RoHS Compliant Part.
©2016 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D13741-0-4/16(0)
Rev. 0 | Page 9 of 9
相关型号：
ADA4806-1ARJZ-R7
0.2 µV/°C Offset Drift, 105 MHz, Low Power, Multimode, Rail-to-Rail Amplifier
ADI
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