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LT1995IDD#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
13
LT1995
1995fb
APPLICATIO S I FOR ATIO
WUUU
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
IN
–
V
IN
+
V
OUT
V
REF
–V
+V
6
4
5
7
LT1995
G = 1.00
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
IN
–
V
IN
+
V
OUT
V
REF
–V
+V
6
4
5
7
LT1995
G = 2.00
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
IN
–
V
IN
+
V
OUT
V
REF
–V
+V
6
4
5
7
LT1995
G = 3.00
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
IN
–
V
IN
+
V
OUT
V
REF
–V
+V
6
4
5
7
LT1995
G = 1.33
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
IN
–
V
IN
+
V
OUT
V
REF
–V
+V
6
4
5
7
LT1995
G = 4.00
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
IN
–
V
IN
+
V
OUT
V
REF
–V
+V
6
4
5
7
LT1995
G = 5.00
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
IN
–
V
IN
+
V
OUT
V
REF
–V
+V
6
4
5
7
LT1995
G = 7.00
REF
1995 F01
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
IN
–
V
IN
+
V
OUT
V
REF
–V
+V
6
4
5
7
LT1995
G = 6.00
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
IN
–
V
IN
+
V
OUT
V
REF
–V
+V
6
4
5
7
LT1995
G = 1.67
REF
Figure 1. Difference (and Inverting) Amplifier Configurations
Table 1. Pin Use, Input Range, Input Resistance, Bandwidth in Difference Amplifier Configuration
GAIN 1 2 3 4 5 6 7
Use of P1/M1 V
IN
Open V
IN
Open V
IN
Open V
IN
Use of P2/M2 Open V
IN
V
IN
Open Open V
IN
V
IN
Use of P4/M4 Open Open Open V
IN
V
IN
V
IN
V
IN
Positive Input Range: V
REF
= 0V, V
S
= ±15V ±15V ±15V ±15V ±15V ±15V ±15V ±15V
Positive Input Range: V
REF
= 0V, V
S
= ±5V ±5V ±4.88V ±4.33V ±4.06V ±3.9V ±3.79V ±3.71V
Positive Input Range: V
REF
= 0V, V
S
= ±2.5V ±1.5V ±1.13V ±1V ±0.94V ±0.9V ±0.88V ±0.86V
Positive Input Resistance 8k 6k 5.33k 5k 4.8k 4.67k 4.57k
Minus Input Resistance 4k 2k 1.33k 1k 800Ω 667Ω 571Ω
Ref Input Resistance 8k 6k 5.33k 5k 4.8k 4.67k 4.57k
Input Common Mode Resistance, V
REF
= 0V 4k 3k 2.67k 2.5k 2.4k 2.33k 2.29k
Input Differential Mode Resistance, V
REF
= 0V 8k 4k 2.67k 2k 1.6k 1.33k 1.14k
–3dB Bandwidth 32MHz 27MHz 27MHz 23MHz 18MHz 16MHz 15MHz
14
LT1995
1995fb
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
–V
+V
6
4
5
7
LT1995
G = 1.00
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
–V
+V
6
4
5
7
LT1995
G = 1.14
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
–V
+V
6
4
5
7
LT1995
G = 1.33
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
–V
+V
6
4
5
7
LT1995
G = 1.40
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
–V
+V
6
4
5
7
LT1995
G = 1.20
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
–V
+V
6
4
5
1995 F02
7
LT1995
G = 1.60
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
–V
+V
6
4
5
7
LT1995
G = 2.00
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
–V
+V
6
4
5
7
LT1995
G = 2.33
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
–V
+V
6
4
5
7
LT1995
G = 2.66
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
–V
+V
6
4
5
7
LT1995
G = 6.00
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
1995 F02b
V
IN
–V
+V
6
4
5
7
LT1995
G = 8.00
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
–V
+V
6
4
5
7
LT1995
G = 7.00
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
–V
+V
6
4
5
7
LT1995
G = 3.00
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
–V
+V
6
4
5
7
LT1995
G = 4.00
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
–V
+V
6
4
5
7
LT1995
G = 5.00
REF
APPLICATIO S I FOR ATIO
WUUU
Figure 2. Noninverting Buffer Amplifier Configurations (Hi-Z Input)
15
LT1995
1995fb
APPLICATIO S I FOR ATIO
WUUU
AC-Coupling Methods for Single Supply Operation
The LT1995 can be used in many single-supply applications
using AC-coupling without additional biasing circuitry.
AC-coupling the LT1995 in a difference amplifier configu-
ration (as in Figure 1) is a simple matter of adding coupling
capacitors to each input and the output as shown in the
example of Figure 5. The input voltage V
BIAS
applied to the
REF pin establishes the quiescent voltage on the input and
output pins. The V
BIAS
signal should have a low source
impedance to avoid degrading the CMRR (0.5Ω for
1dB CMRR change typically).
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
*
–V
+V
6
4
5
7
LT1995
A = 0.875
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
*
–V
+V
6
4
5
7
LT1995
A = 0.833
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
*
–V
+V
6
4
5
7
LT1995
A = 0.857
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
*
–V
+V
6
4
5
7
LT1995
A = 0.800
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
*
–V
+V
6
4
5
7
LT1995
A = 0.714
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
*
–V
+V
6
4
5
7
LT1995
A = 0.750
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
*
–V
+V
6
4
5
7
LT1995
*CONFIGURE M INPUTS FOR DESIRED G PARAMETER; REFER TO FIGURE 2 FOR CONNECTIONS
A = 0.667
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
*
–V
+V
6
4
5
1995 F03
7
LT1995
A = 0.571
REF
M4
M2
M1
P1
P2
P4
8
9
10
1
2
3
V
OUT
V
IN
*
–V
+V
6
4
5
7
LT1995
A = 0.625
REF
Figure 3. Noninverting Amplifier Input Attenuation Configurations (A > 0.5)
1
1
2
4
5
6
8
1995 F04
3
7
73
GAIN COMBINATION
NONINVERTING GAIN
Figure 4. Unique Noninverting Gain Configurations
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LT1995IDD#TRPBF

Mfr. #:
Buy LT1995IDD#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Differential Amplifiers 30MHz, 1000V/ s Gain Sel Amp
Lifecycle:
New from this manufacturer.
Delivery:
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