LT1990AIS8 Linear Technology, LT1990AIS8 Datasheet - Page 13

• Manufacturer Part Number: LT1990AIS8
• Description: IC AMP DIFF +/-250V MCRPWR 8SOIC
• Manufacturer: Linear Technology

Specifications of LT1990AIS8

• Amplifier Type: Differential
• Number Of Circuits: 1
• Output Type: Rail-to-Rail
• Slew Rate: 0.55 V/µs
• -3db Bandwidth: 105kHz
• Voltage - Input Offset: 900µV
• Current - Supply: 140µA
• Current - Output / Channel: 22mA
• Voltage - Supply, Single/dual (±): 2.7 V ~ 36 V, ±1.35 V ~ 18 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Gain Bandwidth Product: -
• Current - Input Bias: -

PI FU CTIO S
BLOCK DIAGRA
TYPICAL PERFOR A CE CHARACTERISTICS
REF (Pin 1): Reference Input. Sets the output level when
the difference between the inputs is zero.
–IN (Pin 2): Inverting Input. Connects a 1MΩ resistor to
the op amp’s inverting input. Designed to permit high
voltage operation.
+IN (Pin 3): Noninverting Input. Connects a 1MΩ resistor
to the op amp’s noninverting input. Designed to permit
high voltage operation.
V
(in single supply applications) or a negative voltage (in
split supply applications).
GAIN2 (Pin 5): Gain = 10 Select Input. Configures the
–
1.5V
U
(Pin 4): Negative Power Supply. Can be either ground
Small Signal Transient Response
V
G = 1, –1
R
V
S
L
REF
= 3V, 0V
= 10k
= 1.5V
U
50µs/DIV
U
W
W
1990 G28
U
–IN
+IN
V
V
+
–
7
2
3
4
R1
1M
R2
1M
GND
REF
Small Signal Transient Response
V
G = 1, –1
R
V
1
S
L
REF
R3
40k
= ±15V
= 10k
= GND
R4
40k
–
+
900k
900k
R5
R8
50µs/DIV
amplifier for a gain of 10 when connected to the GAIN1 pin
and the REF pin. The gain is equal to one when both GAIN2
and GAIN1 are open. See Applications section for addi-
tional functions.
OUT (Pin 6): Output. V
basic configuration.
V
36V above the V
GAIN1 (Pin 8): Gain = 10 Select Input. Configures the
amplifier for a gain of 10 when connected to the GAIN2 pin
and the REF pin. The gain is equal to one when both GAIN1
and GAIN2 are open. See Applications section for addi-
tional functions.
+
(Pin 7): Positive Power Supply. Can range from 2.7V to
R6
100k
R9
100k
10k
R10
10k
R7
1990 G29
1990 SS
8
6
5
–
voltage.
GAIN1
OUT
GAIN2
OUT
GND
= G • (V
Large Signal Transient Response
V
G = 1, –1
R
V
S
REF
L
= ±15V
= 10k
= GND
+IN
– V
50µs/DIV
–IN
) + V
LT1990
REF
13
, in the
1990 G30
1990fb