AMP01 Datasheet, PDF (1/22 Pages) Analog Devices – Low Noise, Precision Instrumentation Amplifier

a
Low Noise, Precision
Instrumentation Amplifier
AMP01*
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: ؎10 V at ؎50 mA
Capacitive Load Stability: to 1 ␮F
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
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 µF), 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 µV), which generally elimi-
nates the external null potentiometer. Temperature changes
have minimal effect on offset; TCV_IOS is typically 0.15 µV/°C.
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/µs into capacitive loads of up to 15 nF,
settles in 50 µs 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 Ω,
500 Ω, and 2 kΩ. Loaded with 500 Ω, the output delivers
± 13.0 V minimum. A thermal shutdown circuit prevents de-
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.
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.
PIN CONFIGURATIONS
18-Lead Cerdip
R_G 1
R_G 2
–IN 3
V_OOS NULL 4
V_OOS NULL 5
TEST PIN* 6
SENSE 7
18 +IN
17 V_IOS NULL
16 V_IOS NULL
15 R_S
14 R_S
13 +V_OP
12 V+
REFERENCE 8
11 V–
OUTPUT 9
10
AMP01
–V_OP
TOP VIEW
(Not to Scale)
*MAKE NO ELECTRICAL CONNECTION
AMP01 BTC/883
28-Terminal LCC
4 3 2 1 28 27 26
NC 5
V_OOS NULL 6
NC 7
V_OOS NULL 8
NC 9
TEST PIN* 10
NC 11
AMP01
TOP VIEW
(Not to Scale)
25 V_IOS NULL
24 NC
23 R_S
22 R_S
21 +V_OP
20 NC
19 V+
NC = NO CONNECT
12 13 14 15 16 17 18
*MAKE NO ELECTRICAL CONNECTION
20-Lead SOIC
R_G 1
TEST PIN* 2
20 R_G
19 TEST PIN*
–IN 3
18 +IN
V_OOS NULL 4
17 V_IOS NULL
V_OOS NULL
TEST PIN*
SENSE
5 _AMP01 16
6 ^{TOP VIEW} 15
(Not to Scale)
7
14
V_IOS NULL
R_S
R_S
REFERENCE 8
13 +V_OP
OUTPUT 9
12 V+
–V_OP 10
11 V–
*MAKE NO ELECTRICAL CONNECTION
*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: [phone]
World Wide Web Site: http://www.analog.com
Fax: [phone]
© Analog Devices, Inc., 1999