Datasheet AMP01 (Analog Devices)

Low Noise, Precision Instrumentation Amplifier Data Sheet AMP01 FEATURES
changes have minimal effect on offset; TCVIOS is typically 0.15 μV/°C. Excellent low frequency noise performance is
Low offset voltage: 50 μV maximum Very low offset voltage drift: 0.3 μV/
achieved with a minimal compromise on input protection. The
°C maximum Low noise: 0.12 μV p-p (0.1 Hz to 10 Hz)
bias current is very low, less than 10 nA over the military
Excellent output drive: ±10 V at ±50 mA
temperature range. High common-mode rejection of 130 dB,
Capacitive load stability: up to 1 μF
16-bit linearity at a gain of 1000, and 50 mA peak output
Gain range: 0.1 to 10,000
current are achievable simultaneously. This combination takes
Excellent linearity: 16-bit at G = 1000
the instrumentation amplifier one step further towards the
High CMR: 125 dB minimum (G = 1000)
ideal amplifier.
Low bias current: 4 nA maximum
AC performance complements the superb dc specifications. The
Can be configured as a precision op amp
AMP01 slews at 4.5 V/μs into capacitive loads of up to 15 nF, settles
Output-stage thermal shutdown
in 50 μs to 0.01% at a gain of 1000, and boasts a healthy 26 MHz
Available in die form
gain bandwidth product. These features make the AMP01 ideal
GENERAL DESCRIPTION
for high speed data acquisition systems. The AMP011 is a monolithic instrumentation amplifier The gain is set by the ratio of two external resistors over a range of designed for high-precision data acquisition and instrumen- 0.1 to 10,000. A very low gain temperature coefficient of tation applications. The design combines the conventional 10 ppm/°C is achievable over the whole gain range. Output features of an instrumentation amplifier with a high current voltage swing is guaranteed with three load resistances: 50 Ω, output stage. The output remains stable with high capacitance 500 Ω, and 2 kΩ. Loaded with 500 Ω, the output delivers loads (1 μF), a unique ability for an instrumentation amplifier. ±13.0 V minimum. A thermal shutdown circuit prevents Consequently, the AMP01 can amplify low level signals for destruction of the output transistors during overload transmission through long cables without requiring an output conditions. buffer. The output stage can be configured as a voltage or The AMP01 can also be configured as a high performance current generator. operational amplifier. In many applications, the AMP01 can be Input offset voltage is very low (20 μV), which generally used in place of op amp/power buffer combinations. eliminates the external null potentiometer. Temperature
FUNCTIONAL BLOCK DIAGRAM V+ VIOS NULL +VOP A1 OUTPUT 250Ω –IN –VOP 250Ω +IN Q1 Q2 REFERENCE R1 47.5kΩ R R3 G 47.5kΩ SENSE A2 A3 RS R2 V R4 OOS 2.5kΩ NULL 2.5kΩ
004 35-
V–
143 Figure 1. 1 Protected under U.S. Patents 4,471,321 and 4,503,381.
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Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ELECTRICAL CHARACTERISTICS DICE CHARACTERISTICS WAFER TEST LIMITS (AMP01NBC) ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION INPUT AND OUTPUT OFFSET VOLTAGES INPUT BIAS AND OFFSET CURRENTS GAIN COMMON-MODE REJECTION ACTIVE GUARD DRIVE GROUNDING SENSE AND REFERENCE TERMINALS DRIVING 50 Ω LOADS HEATSINKING OVERVOLTAGE PROTECTION POWER SUPPLY CONSIDERATIONS APPLICATIONS CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE