Datasheet LT1996 (Analog Devices) - 7
| Manufacturer | Analog Devices |
| Description | Precision, 100µA Gain Selectable Amplifier |
| Pages / Page | 24 / 7 — TYPICAL PERFOR A CE CHARACTERISTICS (Difference Amplifier Configuration). … |
| File Format / Size | PDF / 351 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CHARACTERISTICS (Difference Amplifier Configuration). Gain vs Frequency. Gain and Phase vs Frequency
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Text Version of Document
LT1996
W U TYPICAL PERFOR A CE CHARACTERISTICS (Difference Amplifier Configuration) Gain vs Frequency Gain and Phase vs Frequency 0.01Hz to 1Hz Voltage Noise
50 40 0 VS = 5V, 0V V PHASE S = 5V, 0V VS = ±15V TA = 25°C T (RIGHT AXIS) A = 25°C –20 TA = 25°C GAIN = 9 40 GAIN = 81 30 –40 MEASURED IN G =117 REFERRED TO OP AMP INPUTS –60 PHASE (deg) 30 GAIN = 27 20 –80 GAIN (LEFT AXIS) –100 GAIN (dB) 20 GAIN = 9 GAIN (dB) 10 –120 –140 10 0 –160 –180 OP AMP VOLTAGE NOISE (100nV/DIV) 0 –10 –200 0.5 1 10 100 500 0.1 1 10 100 400 0 10 20 30 40 50 60 70 80 90 100 FREQUENCY (kHz) FREQUENCY (kHz) TIME (s) 1996 G16 1996 G17 1996 G21
Small Signal Transient Response, Small Signal Transient Response, Small Signal Transient Response, Gain = 9 Gain = 27 Gain = 81
50mV/DIV 50mV/DIV 50mV/DIV 10µs/DIV 1996 G18 20µs/DIV 1996 G19 50µs/DIV 1996 G20
U U U PI FU CTIO S (Difference Amplifier Configuration) P9 (Pin 1):
Noninverting Gain-of-9 input. Connects a 50k resistor to the op amp’s noninverting input. internal resistor to the op amp’s noninverting input.
OUT (Pin 6):
Output. VOUT = VREF + 9 • (VP1 – VM1) + 27 •
P27 (Pin 2):
Noninverting Gain-of-27 input. Connects a (VP3 – VM3) + 81 • (VP9 – VM9). (50k/3) internal resistor to the op amp’s noninverting input.
VCC (Pin 7):
Positive Power Supply. Can be anything from
P81 (Pin 3):
Noninverting Gain-of-81 input. Connects a 2.7V to 36V above the VEE voltage. (50k/9) internal resistor to the op amp’s noninverting input.
M81 (Pin 8):
Inverting Gain-of-81 input. Connects a
VEE (Pin 4):
Negative Power Supply. Can be either ground (50k/9) internal resistor to the op amp’s inverting input. (in single supply applications), or a negative voltage (in
M27 (Pin 9):
Inverting Gain-of-27 input. Connects a split supply applications). (50k/3) internal resistor to the op amp’s inverting input.
REF (Pin 5):
Reference Input. Sets the output level when
M9 (Pin 10):
Inverting Gain-of-9 input. Connects a 50k difference between inputs is zero. Connects a 450k internal internal resistor to the op amp’s inverting input. 1996f 7
W U TYPICAL PERFOR A CE CHARACTERISTICS (Difference Amplifier Configuration) Gain vs Frequency Gain and Phase vs Frequency 0.01Hz to 1Hz Voltage Noise
50 40 0 VS = 5V, 0V V PHASE S = 5V, 0V VS = ±15V TA = 25°C T (RIGHT AXIS) A = 25°C –20 TA = 25°C GAIN = 9 40 GAIN = 81 30 –40 MEASURED IN G =117 REFERRED TO OP AMP INPUTS –60 PHASE (deg) 30 GAIN = 27 20 –80 GAIN (LEFT AXIS) –100 GAIN (dB) 20 GAIN = 9 GAIN (dB) 10 –120 –140 10 0 –160 –180 OP AMP VOLTAGE NOISE (100nV/DIV) 0 –10 –200 0.5 1 10 100 500 0.1 1 10 100 400 0 10 20 30 40 50 60 70 80 90 100 FREQUENCY (kHz) FREQUENCY (kHz) TIME (s) 1996 G16 1996 G17 1996 G21
Small Signal Transient Response, Small Signal Transient Response, Small Signal Transient Response, Gain = 9 Gain = 27 Gain = 81
50mV/DIV 50mV/DIV 50mV/DIV 10µs/DIV 1996 G18 20µs/DIV 1996 G19 50µs/DIV 1996 G20
U U U PI FU CTIO S (Difference Amplifier Configuration) P9 (Pin 1):
Noninverting Gain-of-9 input. Connects a 50k resistor to the op amp’s noninverting input. internal resistor to the op amp’s noninverting input.
OUT (Pin 6):
Output. VOUT = VREF + 9 • (VP1 – VM1) + 27 •
P27 (Pin 2):
Noninverting Gain-of-27 input. Connects a (VP3 – VM3) + 81 • (VP9 – VM9). (50k/3) internal resistor to the op amp’s noninverting input.
VCC (Pin 7):
Positive Power Supply. Can be anything from
P81 (Pin 3):
Noninverting Gain-of-81 input. Connects a 2.7V to 36V above the VEE voltage. (50k/9) internal resistor to the op amp’s noninverting input.
M81 (Pin 8):
Inverting Gain-of-81 input. Connects a
VEE (Pin 4):
Negative Power Supply. Can be either ground (50k/9) internal resistor to the op amp’s inverting input. (in single supply applications), or a negative voltage (in
M27 (Pin 9):
Inverting Gain-of-27 input. Connects a split supply applications). (50k/3) internal resistor to the op amp’s inverting input.
REF (Pin 5):
Reference Input. Sets the output level when
M9 (Pin 10):
Inverting Gain-of-9 input. Connects a 50k difference between inputs is zero. Connects a 450k internal internal resistor to the op amp’s inverting input. 1996f 7
