AMP01 Analog Devices, AMP01 Datasheet

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AMP01

Manufacturer Part Number
AMP01
Description
Low Noise/ Precision Instrumentation Amplifier
Manufacturer
Analog Devices
Datasheet

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a
REV. D
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
GENERAL DESCRIPTION
The AMP01 is a monolithic instrumentation amplifier designed
for high-precision data acquisition and instrumentation applica-
tions. The design combines the conventional features of an
instrumentation amplifier with a high current output stage. The
output remains stable with high capacitance loads (1 F), a
unique ability for an instrumentation amplifier. Consequently,
the AMP01 can amplify low level signals for transmission
through long cables without requiring an output buffer. The output
stage may be configured as a voltage or current generator.
Input offset voltage is very low (20 V), which generally elimi-
nates the external null potentiometer. Temperature changes
have minimal effect on offset; TCV
Excellent low-frequency noise performance is achieved with a
minimal compromise on input protection. Bias current is very
low, less than 10 nA over the military temperature range. High
common-mode rejection of 130 dB, 16-bit linearity at a gain of
1000, and 50 mA peak output current are achievable simulta-
neously. This combination takes the instrumentation amplifier
one step further towards the ideal amplifier.
AC performance complements the superb dc specifications. The
AMP01 slews at 4.5 V/ s into capacitive loads of up to 15 nF,
settles in 50 s to 0.01% at a gain of 1000, and boasts a healthy
26 MHz gain-bandwidth product. These features make the
AMP01 ideal for high speed data acquisition systems.
Gain is set by the ratio of two external resistors over a range of
0.1 to 10,000. A very low gain temperature coefficient of
10 ppm/ C is achievable over the whole gain range. Output
voltage swing is guaranteed with three load resistances; 50 ,
500 , and 2 k . Loaded with 500 , the output delivers
struction of the output transistors during overload conditions.
The AMP01 can also be configured as a high performance op-
erational amplifier. In many applications, the AMP01 can be
used in place of op amp/power-buffer combinations.
13.0 V minimum. A thermal shutdown circuit prevents de-
FEATURES
Low Offset Voltage: 50 V Max
Very Low Offset Voltage Drift: 0.3 V/ C Max
Low Noise: 0.12 V p-p (0.1 Hz to 10 Hz)
Excellent Output Drive:
Capacitive Load Stability: to 1
Gain Range: 0.1 to 10,000
Excellent Linearity: 16-Bit at G = 1000
High CMR: 125 dB min (G = 1000)
Low Bias Current: 4 nA Max
May Be Configured as a Precision Op Amp
Output-Stage Thermal Shutdown
Available in Die Form
10 V at
IOS
F
is typically 0.15 V/ C.
50 mA
*Protected under U.S. Patent Numbers 4,471,321 and 4,503,381.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
NC = NO CONNECT
V
V
Instrumentation Amplifier
TEST PIN*
OOS
OOS
REFERENCE
REFERENCE
V
V
V
V
NULL
NULL
TEST PIN*
TEST PIN*
OOS
OOS
OOS
OOS
TEST PIN*
OUTPUT
OUTPUT
NC
NC
NC
NC
*MAKE NO ELECTRICAL CONNECTION
*MAKE NO ELECTRICAL CONNECTION
PIN CONFIGURATIONS
SENSE
*MAKE NO ELECTRICAL CONNECTION
SENSE
NULL
NULL
NULL
NULL
–V
10
11
5
6
7
8
9
–IN
–IN
R
World Wide Web Site: http://www.analog.com
R
R
OP
Low Noise, Precision
28-Terminal LCC
G
G
G
AMP01 BTC/883
18-Lead Cerdip
20-Lead SOIC
10
12 13 14 15 16 17 18
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
4
(Not to Scale)
(Not to Scale)
3
TOP VIEW
(Not to Scale)
TOP VIEW
AMP01
TOP VIEW
AMP01
2
AMP01
1
28 27
18
17
16
15
14
13
12
11
10
20
19
18
17
16
15
14
13
12
11
© Analog Devices, Inc., 1999
26
R
TEST PIN*
+IN
V
V
R
R
+V
V+
V–
–V
+IN
V
V
R
R
+V
V+
V–
IOS
IOS
S
S
G
IOS
IOS
S
S
OP
OP
OP
AMP01*
NULL
NULL
NULL
NULL
25
24
23
22
21
20
19
V
NC
R
R
+V
NC
V+
IOS
S
S
OP
NULL

Related parts for AMP01

AMP01 Summary of contents

Page 1

... This combination takes the instrumentation amplifier one step further towards the ideal amplifier. AC performance complements the superb dc specifications. The AMP01 slews at 4 into capacitive loads nF, settles 0.01 gain of 1000, and boasts a healthy 26 MHz gain-bandwidth product. These features make the AMP01 ideal for high speed data acquisition systems ...

Page 2

... Source Imbalance G = 1000 G = 100 – +125 1000 G = 100 and TCV respectively. IOS OOS –2– +25 C, unless otherwise noted AMP01A AMP01B Min Typ Max Min Typ 0.15 0.3 0 ...

Page 3

... AMP01 Units pA pA ...

Page 4

... 3.5 To 0.01 step 100 G = 1000 T +85 C for E/F grades for G grades –4– +25 C, unless otherwise noted AMP01A/E AMP01B/F/G Typ Max Min Typ Max 0.3 0.6 0.5 0.8 10k 0.1 10k 0.0007 0.005 0.0007 0.005 0.005 0.005 0.005 0.007 0.010 ...

Page 5

... Guaranteed by design. Specifications subject to change without notice. Model AMP01AX AMP01AX/883C AMP01BTC/883C AMP01BX AMP01BX/883C AMP01EX AMP01FX AMP01GBC AMP01GS AMP01GS-REEL AMP01NBC 5962-8863001VA* – +125 C 5962-88630023A* – +125 C 5962-8863002VA* – +125 C *Standard military drawing available. REV ...

Page 6

... 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 the AMP01 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 ...

Page 7

... G = 1000 0 1000 0 1000 0.01 Step G = 1000 –7– +25 C, unless otherwise noted) A AMP01GBC Typical Typical 0.15 0. 0.0007 0.0007 5 5 0.15 0.15 0.12 0. 4.5 4 AMP01 Units pA nV p-p pA p-p kHz ...

Page 8

... AMP01 –Typical Performance Characteristics 15V –10 –20 –30 –40 –75 –50 – 100 125 150 TEMPERATURE – C Figure 2. Input Offset Voltage vs. Temperature 2 + 2.0 1.5 1.0 0.5 0 –0.5 –1 POWER SUPPLY VOLTAGE – Volts Figure 5. Output Offset Voltage Change vs ...

Page 9

... S 0. 600 20V p-p OUT 0.06 0. 1000 0.04 0. 100 0. 0. 100 1k 10k FREQUENCY – Hz Figure 18. Total Harmonic Distortion vs. Frequency –9– AMP01 140 G = 1000 G = 100 120 100 15V + 100 1k 10k 100k FREQUENCY – ...

Page 10

... AMP01 15V 100 1k VOLTAGE GAIN – G Figure 20. Slew Rate vs. Voltage Gain 1000 100 1k 10k FREQUENCY – Hz Figure 23. Voltage Noise Density vs. Frequency – + –7 –6 –5 –4 –3 –2 – ...

Page 11

... Frequently, the amplifier drift is referred back to the input (RTI), which is then equiva- lent to an input signal change; TCV (RTI) = TCV OS IOS For example, the maximum input-referred drift of an AMP01 EX set 1000 becomes; 100 TCV (RTI ) = 0 ...

Page 12

... Gain accuracy is determined by the ratio accuracy of R combined with the gain equation error of the AMP01 (0.6% max for A/E grades). All instrumentation amplifiers require attention to layout so thermocouple effects are minimized. Thermocouples formed between copper and dissimilar metals can easily destroy the ...

Page 13

... VOLTAGE GAIN 500 WITH COMPONENTS SHOWN V +IN +15V GUARD 741 DRIVE 3 4 –15V – SIGNAL GROUND Figure 31. AMP01 Evaluation Circuit Showing Guard-Drive Connection C C AMP01 OUTPUT REFERENCE REV 0.047 10k ...

Page 14

... REFERENCE OUTPUT GROUND V– Figure 33. Remote Load Sensing R1 R 130 AMP01 130 Figure 34. Driving 50 –14– loads. For this reason, the loads. TWISTED PAIRS +15V 0.047 F C1 0.047 F SENSE ...

Page 15

... Limited internal over- load protection is used so that noise performance would not be significantly degraded. AMP01 noise level approaches the theoretical noise floor of the input stage which would kHz when the gain is set at 1000. Noise is the result of shot noise in the input devices and Johnson noise in the resistors ...

Page 16

... 0.047 100 V+ 13 200 7 R OUT 9 AMP01 2.21k V– 11 500 R4 ZERO TRIM 100 0.047 F COMPLIANCE +20V WITH +30V SUPPLY (OUTPUT w.r.t. 0V) OUT DIFFERENTIAL INPUT OF 100mV FOR 16mA SPAN OUTPUT RESISTANCE ~ 20mA OUT LINEARITY 0.01% OF SPAN – ...

Page 17

... G1 TTL COMPATIBLE INPUTS Figure 39. The AMP01 Makes an Excellent Programmable-Gain Instrumentation Amplifier. Combined Gain-Switching and Settling Time to 13 Bits Falls Below 100 s. Linearity Is Better than 12 Bits over a Gain Range 1 to 1000. REV 0.047 F 10k ...

Page 18

... 390 2 3 CLOSED-LOOP VOLTAGE GAIN MUST BE GREATER THAN 50 FOR STABLE OPERATION CONNECT Figure 41. Configuring the AMP01 as a Noninverting Operational Amplifier Provides Exceptional Performance. The Output Handles Low Load Impedances at Very Low Distortion, 0.006%. 0.047 F * MATCHED TO 0. ...

Page 19

... Offset Voltage Drift at Unity Gain Is Improved over the Drift in the Instrumentation Amplifier Configuration. 680pF 330 3k Figure 43. Stability with Large Capacitive Loads Combined with High Output Current Capability make the AMP01 Ideal for Line Driving Applications. Offset Voltage Drift Approaches the TCV REV 220k ...

Page 20

... Figure 44. Noise Test Circuit (0 Hz) 200 1.91k 10T 0.1% 2 10k 10k 0. 200k 20k 2k 200 0.1% 0.1% 0.1% 0.1% AMP01 G G 100 1000 0.047 F V+ Figure 45. Settling-Time Test Circuit –20– 16. – 1 1.82k 1/2 OP215 ...

Page 21

... SENSE AMP01 10k –18V Figure 47. Burn-In Circuit –21– VOLTAGE GAIN 7.5k 15k 13 4 DAC- 0.01 F TTL INPUT "OFFSET" V OUT 0.047 F AMP01 +15V ) OUT 14 15 7.5k 0V –15V ...

Page 22

... AMP01 0.200 (5.08) 0.200 (5.08) 0.125 (3.18) 0.458 (11.63) 0.442 (11.23) 0.0118 (0.30) 0.0040 (0.10) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 18-Lead Cerdip (Q-18) 0.005 (0.13) MIN 0.098 (2.49) MAX 18 10 0.310 (7.87) 0.220 (5.59 PIN 1 0.060 (1.52) 0.960 (24.38) MAX 0.015 (0.38) MAX 0.150 (3.81) MIN 0.023 (0.58) 0.100 SEATING 0.070 (1.78) PLANE (2.54) 0.014 (0.36) 0.030 (0.76) BSC 28-Terminal Ceramic Leadless Chip Carrier (E-28A) 0 ...

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