Datasheet

LT1881/LT1882
4
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ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS
C/I Grades H/MP Grades
UNITSMIN TYP MAX MIN TYP MAX
A
VOL
Large-Signal Voltage Gain R
L
= 10k; 1V < V
OUT
< 4V
l
500
350
1600 500
300
1600 V/mV
V/mV
R
L
= 2k; 1V < V
OUT
< 4V
l
300
250
800 300
200
800 V/mV
V/mV
R
L
= 1k; 1V < V
OUT
< 4V
l
250
200
400 250
150
400 V/mV
V/mV
V
OL
Output Voltage Swing Low No Load
I
SINK
= 100μA
I
SINK
= 1mA
I
SINK
= 5mA
l
l
l
l
20
25
70
270
40
50
150
600
20
25
70
270
50
60
200
750
mV
mV
mV
mV
V
OH
Output Voltage Swing High
(Referred to V
+
)
No Load
I
SINK
= 100μA
I
SINK
= 1mA
I
SINK
= 5mA
l
l
l
l
120
130
180
360
220
230
300
600
120
130
180
360
300
325
450
800
mV
mV
mV
mV
I
S
Supply Current Per Amplifi er V
S
= 3V, 0V
l
0.45 0.65 0.85
1.2
0.45 0.65 0.85
1.5
mA
mA
V
S
= 5V, 0V
l
0.5 0.65 0.9
1.4
0.5 0.65 0.9
1.7
mA
mA
V
S
= 12V, 0V
l
0.5 0.70 1.0
1.5
0.5 0.70 1.0
1.8
mA
mA
I
SC
Short-Circuit Current V
OUT
Short to GND
V
OUT
Short to V
+
l
l
15
15
30
30
10
10
30
30
mA
mA
GBW Gain Bandwidth Product f = 20kHz 0.35 1.0 0.35 1.0 MHz
Channel Separation f = 1kHz 120 120 dB
t
S
Settling Time 0.01%, V
OUT
= 1.5V to 3.5V,
A
V
= –1, R
L
= 2k
30 30 μs
SR
+
Slew Rate Positive A
V
= –1
l
0.15
0.12
0.35 0.15
0.1
0.35 V/μs
V/μs
SR
Slew Rate Negative A
V
= –1
l
0.11
0.08
0.18 0.11
0.06
0.18 V/μs
V/μs
FPBW Full-Power Bandwidth V
OUT
= 4V
P-P
(Note 10)
l
8.75
6.35
14 8.75
4.75
14 kHz
kHz
ΔV
OS
Offset Voltage Match
(LT1881A)
(Note 7)
0°C < T
A
< 70°C
40°C < T
A
< 85°C
l
l
30 70
125
160
μV
μV
μV
Offset Voltage Match
(LT1881/LT1882)
(Note 7)
0°C < T
A
< 70°C
40°C < T
A
< 85°C
40°C < T
A
< 125°C
55°C < T
A
< 125°C
l
l
l
l
35 125
175
235
35 125
385
385
μV
μV
μV
μV
μV
Offset Voltage Match Drift (Notes 6, 7)
l
0.4 1.2 0.4 1.2 μV/°C
ΔI
B
+
Noninverting Bias Current Match
(LT1881A)
(Note 7)
0°C < T
A
< 70°C
40°C < T
A
< 85°C
l
l
200 300
400
500
pA
pA
pA
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. Single supply operation V
S
= 5V, 0V; V
CM
= V
S
/2 unless otherwise noted.
(Note 5)