AD8574TRUZ-EP [ADI]
Zero-Drift, Single-Supply, RRIO Quad Op Amp;
| 型号： | AD8574TRUZ-EP |
| 厂家： | 
ADI |
| 描述： | Zero-Drift, Single-Supply, RRIO Quad Op Amp 放大器 光电二极管 |
| 文件： | 总16页 (文件大小：227K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Zero-Drift, Single-Supply, Rail-to-Rail I/O
Quad, Operational Amplifier
AD8574-EP
PIN CONFIGURATIONS
FEATURES
Supports defense and aerospace applications (AQEC
standard)
Military temperature range (−55°C to +125°C)
Controlled manufacturing baseline
One assembly/test site
OUT A
–IN A
+IN A
V+
1
2
3
4
5
6
7
14 OUT D
13 –IN D
12 +IN D
11 V–
AD8574-EP
TOP VIEW
(Not to Scale)
+IN B
–IN B
OUT B
10 +IN C
9
8
–IN C
One fabrication site
OUT C
Enhanced product change notification
Qualification data available on request
Low offset voltage: 1 µV
Input offset drift: 0.005 µV/°C
Rail-to-rail input and output swing
5 V/2.7 V single-supply operation
High gain: 145 dB typical
CMRR: 140 dB typical
PSRR: 130 dB typical
Ultralow input bias current: 10 pA typical
Low supply current: 750 µA per op amp
Overload recovery time: 50 µs
No external capacitors required
Figure 1. 14-Lead TSSOP (RU Suffix)
The AD8574-EP provides benefits previously found only in
expensive auto-zeroing or chopper-stabilized amplifiers. Using
a patented spread-spectrum, auto-zero technique, the AD8574
eliminates the intermodulation effects from interaction of the
chopping function with the signal frequency in ac applications.
With an offset voltage of only 1 µV and drift of 0.005 µV/°C, the
AD8574-EP is perfectly suited for applications where error
sources must be minimized.
The AD8574-EP is specified for the military temperature range
(−55°C to +125°C). The AD8574-EP quad amplifier is available in
a 14-lead TSSOP package.
APPLICATIONS
Additional applications and technical information is available in
the AD8571/AD8572/AD8574 data sheets.
Temperature sensors
Pressure sensors
Precision current sensing
Strain gage amplifiers
GENERAL DESCRIPTION
This amplifier has ultralow offset, drift, and bias current. The
AD8574-EP is a quad amplifier, featuring rail-to-rail input and
output swings. It is guaranteed to operate from 2.7 V to 5 V
single supply.
Rev. 0
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 fromits 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 andregisteredtrademarks 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: 781.461.3113
www.analog.com
©2010 Analog Devices, Inc. All rights reserved.
AD8574-EP
TABLE OF CONTENTS
Features .............................................................................................. 1
2.7 V Electrical Characteristics ...................................................4
Absolute Maximum Ratings ............................................................5
Thermal Characteristics ...............................................................5
ESD Caution...................................................................................5
Typical Performance Characteristics ..............................................6
Outline Dimensions....................................................................... 14
Ordering Guide .......................................................................... 14
Applications....................................................................................... 1
General Description ......................................................................... 1
Pin Configurations ........................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
5 V Electrical Characteristics...................................................... 3
REVISION HISTORY
8/10—Revision 0: Initial Version
Rev. 0 | Page 2 of 16
AD8574-EP
SPECIFICATIONS
5 V ELECTRICAL CHARACTERISTICS
VS = 5 V, V CM = 2.5 V, VO = 2.5 V, TA = 25°C, unless otherwise noted.
Table 1.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
INPUT CHARACTERISTICS
Offset Voltage
VOS
IB
1
5
μV
μV
pA
nA
pA
pA
V
−55°C ≤ TA ≤ +125°C
−55°C ≤ TA ≤ +125°C
−55°C ≤ TA ≤ +125°C
15
50
1.5
70
200
5
Input Bias Current
10
1.0
20
Input Offset Current
IOS
150
Input Voltage Range
0
Common-Mode Rejection Ratio
CMRR
AVO
VCM = 0 V to 5 V
120
115
125
120
140
130
145
135
0.005
dB
dB
dB
dB
μV/°C
−55°C ≤ TA ≤ +125°C
RL = 10 kΩ, VO = 0.3 V to 4.7 V
−55°C ≤ TA ≤ +125°C
−55°C ≤ TA ≤ +125°C
Large Signal Voltage Gain1
Offset Voltage Drift
OUTPUT CHARACTERISTICS
Output Voltage High
∆VOS/∆T
VOH
0.04
RL = 100 kΩ to GND
RL = 100 kΩ to GND @ −55°C to +125°C
RL = 10 kΩ to GND
RL = 10 kΩ to GND @ −55°C to +125°C
RL = 100 kΩ to V+
RL = 100 kΩ to V+ @ −55°C to +125°C
4.99
4.99
4.95
4.95
4.998
4.997
4.98
4.975
1
V
V
V
V
mV
mV
Output Voltage Low
VOL
10
10
2
RL = 10 kΩ to V+
RL = 10 kΩ to V+ @ −55°C to +125°C
10
15
50
40
30
15
30
30
mV
mV
mA
mA
mA
mA
Short-Circuit Limit
Output Current
ISC
IO
25
−55°C to +125°C
−55°C to +125°C
POWER SUPPLY
Power Supply Rejection Ratio
PSRR
ISY
VS = 2.7 V to 5.5 V
−55°C ≤ TA ≤ +125°C
VO = 0 V
120
115
130
130
850
1000
dB
dB
μA
μA
Supply Current per Amplifier
975
1075
−55°C ≤ TA ≤ +125°C
DYNAMIC PERFORMANCE
Slew Rate
Overload Recovery Time
Gain Bandwidth Product
NOISE PERFORMANCE
Voltage Noise
SR
RL = 10 kΩ
0.4
0.05
1.5
V/μs
ms
MHz
0.3
GBP
en p-p
0 Hz to 10 Hz
0 Hz to 1 Hz
f = 1 kHz
1.3
0.41
51
μV p-p
μV p-p
nV/√Hz
fA/√Hz
Voltage Noise Density
Current Noise Density
en
in
f = 10 Hz
2
1 Gain testing is dependent upon test bandwidth.
Rev. 0 | Page 3 of 16
AD8574-EP
2.7 V ELECTRICAL CHARACTERISTICS
VS = 2.7 V, VCM = 1.35 V, VO = 1.35 V, TA = 25°C, unless otherwise noted.
Table 2.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
INPUT CHARACTERISTICS
Offset Voltage
VOS
IB
1
5
μV
μV
pA
nA
pA
pA
V
−55°C ≤ TA ≤ +125°C
−55°C ≤ TA ≤ +125°C
−55°C ≤ TA ≤ +125°C
15
50
1.5
50
200
2.7
Input Bias Current
10
1.0
10
Input Offset Current
IOS
150
Input Voltage Range
0
Common-Mode Rejection Ratio
CMRR
AVO
VCM = 0 V to 2.7 V
115
110
110
105
130
130
140
130
0.005
dB
dB
dB
dB
µV/°C
−55°C ≤ TA ≤ +125°C
RL = 10 kΩ, VO = 0.3 V to 2.4 V
−55°C ≤ TA ≤ +125°C
−55°C ≤ TA ≤ +125°C
Large Signal Voltage Gain1
Offset Voltage Drift
OUTPUT CHARACTERISTICS
Output Voltage High
∆VOS/∆T
VOH
0.04
RL = 100 kΩ to GND
RL = 100 kΩ to GND @ −55°C to +125°C
RL = 10 kΩ to GND
RL = 10 kΩ to GND @ −55°C to +125°C
RL = 100 kΩ to V+
RL = 100 kΩ to V+ @ −55°C to +125°C
RL = 10 kΩ to V+
2.685
2.685
2.67
2.697
2.696
2.68
2.675
1
2
10
15
15
V
V
V
V
mV
mV
mV
mV
mA
mA
mA
mA
2.67
Output Voltage Low
VOL
10
10
20
20
RL = 10 kΩ to V+ @ −55°C to +125°C
Short-Circuit Limit
Output Current
ISC
IO
10
−55°C to +125°C
−55°C to +125°C
10
10
5
POWER SUPPLY
Power Supply Rejection Ratio
PSRR
ISY
VS = 2.7 V to 5.5 V
−55°C ≤ TA ≤ +125°C
VO = 0 V
120
115
130
130
750
950
dB
dB
μA
μA
Supply Current per Amplifier
900
1000
−55°C ≤ TA ≤ +125°C
DYNAMIC PERFORMANCE
Slew Rate
Overload Recovery Time
Gain Bandwidth Product
NOISE PERFORMANCE
Voltage Noise
SR
RL = 10 kΩ
0.5
0.05
1
V/μs
ms
MHz
GBP
en p-p
en
in
0 Hz to 10 Hz
f = 1 kHz
f = 10 Hz
2.0
94
2
μV p-p
nV/√Hz
fA/√Hz
Voltage Noise Density
Current Noise Density
1 Gain testing is dependent upon test bandwidth.
Rev. 0 | Page 4 of 16
AD8574-EP
ABSOLUTE MAXIMUM RATINGS
Table 3.
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 indicated in the operational section of
this specification is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
Parameter
Rating
Supply Voltage
6 V
Input Voltage
GND to VS + 0.3 V
5.0 V
2000 V
Differential Input Voltage1
ESD (Human Body Model)
Output Short-Circuit Duration to GND
Storage Temperature Range
Operating Temperature Range
Junction Temperature Range
Lead Temperature (Soldering, 60 sec)
THERMAL CHARACTERISTICS
Indefinite
−65°C to +150°C
−55°C to +125°C
−65°C to +150°C
300°C
θJA is specified for the worst-case conditions, that is, θJA is
specified for a device soldered in a circuit board for TSSOP
packages.
Table 4. Thermal Resistance
Package Type
1 Differential input voltage is limited to 5.0 V or the supply voltage,
whichever is less.
θJA
θJC
Unit
14-Lead TSSOP (RU)
180
36
°C/W
ESD CAUTION
Rev. 0 | Page 5 of 16
AD8574-EP
TYPICAL PERFORMANCE CHARACTERISTICS
180
160
140
120
100
80
180
V
V
T
= 5V
CM
= 25°C
V
V
T
= 2.7V
CM
= 25°C
S
S
160
140
120
100
80
= 2.5V
= 1.35V
A
A
60
60
40
40
20
20
0
–2.5
0
–2.5
–1.5
–0.5
0.5
1.5
2.5
–1.5
–0.5
0.5
1.5
2.5
OFFSET VOLTAGE (µV)
OFFSET VOLTAGE (µV)
Figure 2. Input Offset Voltage Distribution
Figure 5. Input Offset Voltage Distribution
50
40
12
10
8
V
T
= 5V
S
A
= –40°C, +25°C, +85°C
V
V
= 5V
S
= 2.5V
CM
= –40°C TO +125°C
T
A
30
+85°C
20
10
6
+25°C
–40°C
0
4
–10
–20
–30
2
0
0
1
2
3
4
5
0
1
2
3
4
5
6
INPUT COMMON-MODE VOLTAGE (V)
INPUT OFFSET DRIFT (nV/°C)
Figure 6. Input Offset Voltage Drift Distribution
Figure 3. Input Bias Current vs. Input Common-Mode Voltage
10k
1k
1500
V
= 5V
= 125°C
S
A
V
= 5V
= 25°C
S
A
T
T
1000
500
0
100
10
SOURCE
–500
SINK
–1000
1
–1500
–2000
0.1
0.0001
0.001
0.01
0.1
1
10
100
0
1
2
3
4
5
LOAD CURRENT (mA)
COMMON-MODE VOLTAGE (V)
Figure 4. Input Bias Current vs. Common-Mode Voltage
Figure 7. Output Voltage to Supply Rail vs. Load Current
Rev. 0 | Page 6 of 16
AD8574-EP
10k
1k
800
700
600
500
400
300
200
100
0
V
= 2.7V
= 25°C
S
A
T
= 25°C
A
T
100
10
SINK
SOURCE
1
0.1
0.0001
0.001
0.01
0.1
1
10
100
0
1
2
3
4
5
6
LOAD CURRENT (mA)
SUPPLY VOLTAGE (V)
Figure 11. Supply Current per Amplifier vs. Supply Voltage
Figure 8. Output Voltage to Supply Rail vs. Load Current
60
50
1000
750
500
250
0
V
= 2.7V
= 0pF
∞
S
L
L
V
V
= 2.5V
CM
= 5V
C
R
S
=
40
0
30
45
90
20
10
135
180
225
270
0
–10
–20
–30
–40
–75
–50
–25
0
25
50
75
100
125
150
10k
100k
1M
10M
100M
TEMPERATURE (°C)
FREQUENCY (Hz)
Figure 9. Input Bias Current vs. Temperature
Figure 12. Open-Loop Gain and Phase Shift vs. Frequency
60
50
1.0
0.8
0.6
V
= 5V
S
L
L
C
R
= 0pF
5V
=
∞
40
0
2.7V
30
45
90
20
10
135
180
225
270
0.4
0.2
0
–10
–20
–30
–40
0
–75
–50
–25
0
25
50
75
100
125
150
10k
100k
1M
10M
100M
TEMPERATURE (°C)
FREQUENCY (Hz)
Figure 10. Supply Current vs. Temperature
Figure 13. Open-Loop Gain and Phase Shift vs. Frequency
Rev. 0 | Page 7 of 16
AD8574-EP
60
50
40
300
270
240
210
180
150
120
90
V
= 2.7V
= 20pF
= 2kΩ
S
L
L
V
= 5V
S
C
R
A
A
= 100
= 10
V
V
30
20
10
A
= 100
V
0
A
= 1
V
–10
–20
–30
–40
A
= 10
V
60
30
A
= 1
V
0
100
100
1k
10k
100k
1M
10M
1k
10k
100k
1M
10M
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 14. Closed-Loop Gain vs. Frequency
Figure 17. Output Impedance vs. Frequency
60
50
V
= 2.7V
= 300pF
= 2kΩ
= 1
V
= 5V
= 20pF
= 2kΩ
S
S
L
L
C
R
A
C
R
L
L
V
40
30
A
A
= 100
= 10
V
20
V
10
0
A
= 1
V
–10
–20
–30
–40
2µs
500mV
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 15. Closed-Loop Gain vs. Frequency
Figure 18. Large Signal Transient Response
300
270
240
210
180
150
120
90
V
= 5V
S
V
= 2.7V
C
R
A
= 300pF
= 2kΩ
= 1
S
L
L
V
A
= 100
V
A
= 10
V
60
30
A
= 1
5µs
1V
V
0
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 16. Output Impedance vs. Frequency
Figure 19. Large Signal Transient Response
Rev. 0 | Page 8 of 16
AD8574-EP
45
V
= ±1.35V
= 50pF
V
= ±2.5V
= 2kΩ
= 25°C
S
S
L
C
R
A
R
T
L
L
V
40
35
30
25
20
15
10
5
=
∞
A
= 1
+OS
–OS
5µs
50mV
0
10
100
1k
10k
CAPACITANCE (pF)
Figure 20. Small Signal Transient Response
Figure 23. Small Signal Overshoot vs. Load Capacitance
V
= ±2.5V
S
C
R
A
= 50pF
0V
L
L
V
=
∞
V
V
= ±2.5V
S
= 1
= –200mV p-p
(RET TO GND)
= 0pF
V
IN
IN
OUT
0V
C
R
A
L
L
V
= 10kΩ
= –100
V
20µs
1V
5µs
50mV
BOTTOM SCALE: 1V/DIV
TOP SCALE: 200mV/DIV
Figure 21. Small Signal Transient Response
Figure 24. Positive Overvoltage Recovery
50
45
40
35
30
25
20
15
10
5
V
= ±1.35V
= 2kΩ
= 25°C
S
L
V
R
IN
T
A
0V
V
V
= ±2.5V
S
= 200mV p-p
(RET TO GND)
= 0pF
IN
C
R
A
L
L
V
+OS
= 10kΩ
= –100
0V
–OS
V
OUT
20µs
1V
0
10
BOTTOM SCALE: 1V/DIV
TOP SCALE: 200mV/DIV
100
1k
10k
CAPACITANCE (pF)
Figure 22. Small Signal Overshoot vs. Load Capacitance
Figure 25. Negative Overvoltage Recovery
Rev. 0 | Page 9 of 16
AD8574-EP
140
120
100
80
V
= ±2.5V
= 2kΩ
S
L
V
V
S
= ±1.35V
R
A
= –100
V
= 60mV p-p
IN
60
40
–PSRR
+PSRR
20
0
200µs
1V
100
1k
10k
100k
1M
10M
10M
1M
FREQUENCY (Hz)
Figure 26. No Phase Reversal
Figure 29. PSRR vs. Frequency
140
120
100
80
140
120
100
80
V
S
= ±2.5V
V
= 2.7V
S
+PSRR
60
60
–PSRR
40
40
20
20
0
0
100
100
1k
10k
100k
1M
1k
10k
100k
1M
10M
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 27. CMRR vs. Frequency
Figure 30. PSRR vs. Frequency
140
120
100
80
3.0
2.5
2.0
1.5
1.0
0.5
0
V
= 5V
S
V
= ±1.35V
= 2kΩ
= 1
THD + N < 1%
= 25°C
S
L
V
R
A
T
A
60
40
20
0
100
1k
10k
100k
1M
10M
100
1k
10k
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 28. CMRR vs. Frequency
Figure 31. Maximum Output Swing vs. Frequency
Rev. 0 | Page 10 of 16
AD8574-EP
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
V
R
A
= ±2.5V
= 2kΩ
= 1
S
L
V
V
R
= 2.7V
= 0Ω
S
364
S
THD + N < 1%
T
= 25°C
A
312
260
208
156
104
52
0
0.5
1.0
1.5
2.0
2.5
100
1k
10k
100k
1M
FREQUENCY (kHz)
FREQUENCY (Hz)
Figure 32. Maximum Output Swing vs. Frequency
Figure 35. Voltage Noise Density from 0 Hz to 2.5 kHz
V
A
= ±1.35V
= 120,000
S
V
R
= 2.7V
= 0Ω
S
112
V
S
96
80
0V
64
48
32
16
50mV
1sec
0
5
10
15
20
25
FREQUENCY (kHz)
Figure 33. 0.1 Hz to 10 Hz Noise
Figure 36. Voltage Noise Density from 0 Hz to 25 kHz
V
A
= ±2.5V
= 120,000
V
R
= 5V
= 0Ω
S
S
182
V
S
156
130
104
78
52
26
50mV
1sec
0
0.5
1.0
1.5
2.0
2.5
FREQUENCY (kHz)
Figure 34. 0.1 Hz to 10 Hz Noise
Figure 37. Voltage Noise Density from 0 Hz to 2.5 kHz
Rev. 0 | Page 11 of 16
AD8574-EP
50
40
V
R
= 5V
= 0Ω
S
V
= 2.7V
S
112
S
30
96
80
I
SC–
20
10
64
48
0
–10
–20
–30
–40
–50
I
SC+
32
16
0
5
10
15
20
25
–75
–50
–25
0
25
50
75
100
125
150
FREQUENCY (kHz)
TEMPERATURE (°C)
Figure 41. Output Short-Circuit Current vs. Temperature
Figure 38. Voltage Noise Density from 0 Hz to 25 kHz
100
80
V
R
= 5V
= 0Ω
S
210
V
= 5V
S
S
60
180
150
I
SC–
40
20
120
90
0
–20
–40
–60
–80
–100
60
30
I
SC+
0
5
10
–75
–50
–25
0
25
50
75
100
125
150
FREQUENCY (Hz)
TEMPERATURE (°C)
Figure 39. Voltage Noise Density from 0 Hz to 10 Hz
Figure 42. Output Short-Circuit Current vs. Temperature
250
225
200
150
145
140
135
130
125
V
= 2.7V
S
V
= 2.7V TO 5.5V
S
175
150
125
R
= 1kΩ
L
100
75
50
25
0
R
0
= 10kΩ
R
= 100kΩ
L
L
–75
–50
–25
25
50
75
100
125
150
–75
–50
–25
0
25
50
75
100
125
150
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 43. Output Voltage to Supply Rail vs. Temperature
Figure 40. Power Supply Rejection vs. Temperature
Rev. 0 | Page 12 of 16
AD8574-EP
250
225
200
V
= 5V
S
175
150
125
R
= 1kΩ
L
100
75
50
25
0
R
= 10kΩ
L
R
= 100kΩ
L
–75
–50
–25
0
25
50
75
100
125
150
TEMPERATURE (°C)
Figure 44. Output Voltage to Supply Rail vs. Temperature
Rev. 0 | Page 13 of 16
AD8574-EP
OUTLINE DIMENSIONS
5.10
5.00
4.90
14
8
7
4.50
4.40
4.30
6.40
BSC
1
PIN 1
0.65 BSC
1.05
1.00
0.80
1.20
MAX
0.20
0.09
0.75
0.60
0.45
8°
0°
0.15
0.05
COPLANARITY
0.10
SEATING
PLANE
0.30
0.19
COMPLIANT TO JEDEC STANDARDS MO-153-AB-1
Figure 45. 14-Lead Thin Shrink Small Outline Package [TSSOP]
(RU-14)
Dimensions shown in millimeters
ORDERING GUIDE
Model
Temperature Range
Package Description
14-Lead TSSOP
14-Lead TSSOP
Package Option
RU-14
RU-14
AD8574TRU-EP
AD8574TRU-EP-RL
−55°C to +125°C
−55°C to +125°C
Rev. 0 | Page 14 of 16
AD8574-EP
NOTES
Rev. 0 | Page 15 of 16
AD8574-EP
NOTES
©2010 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D09302-0-8/10(0)
Rev. 0 | Page 16 of 16
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