Datasheet

LT1638/LT1639
4
16389fg
ELECTRICAL CHARACTERISTICS
LT1638C/LT1639C, LT1638I/LT1639I
SYMBOL PARAMETER CONDITIONS
MIN TYP MAX
UNITS
V
OS
Input Offset Voltage LT1638 N, S Packages
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
l
l
200 600
850
950
μV
μV
μV
LT1639 N, S Packages
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
l
l
300 700
950
1050
μV
μV
μV
LT1638 MS8 Package
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
l
l
350 900
1150
1450
μV
μV
μV
LT1638 DD Package
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
l
l
400 1100
1350
1450
μV
μV
μV
Input Offset Voltage Drift
(Note 9)
LT1638/LT1639 N, S Packages
LT1638MS8, LT1638DD
l
l
2
2.5
6
7
μV/°C
μV/°C
I
OS
Input Offset Current
V
CM
= 44V (Note 5)
l
l
16
2.5
nA
μA
I
B
Input Bias Current
V
CM
= 44V (Note 5)
V
S
= 0V
l
l
20
8
0.1
50
30
nA
μA
nA
Input Noise Voltage 0.1Hz to 10Hz 1 μV
P-P
e
n
Input Noise Voltage Density f = 1kHz 20 nV/√Hz
i
n
Input Noise Current Density f = 1kHz 0.3 pA/√Hz
R
IN
Input Resistance Differential
Common Mode, V
CM
= 0V to 44V
1
1.4
2.5
5.5
MΩ
MΩ
C
IN
Input Capacitance 5pF
Input Voltage Range
l
044V
CMRR Common Mode Rejection Ratio V
CM
= 0V to V
CC
– 1V
V
CM
= 0V to 44V (Note 8)
l
l
88
80
98
88
dB
dB
A
VOL
Large-Signal Voltage Gain V
S
= 3V, V
O
= 500mV to 2.5V, R
L
= 10k
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
l
l
200
133
100
1500 V/mV
V/mV
V/mV
V
S
= 5V, V
O
= 500mV to 4.5V, R
L
= 10k
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
l
l
400
250
200
1500 V/mV
V/mV
V/mV
V
OL
Output Voltage Swing Low V
S
= 3V, No Load
V
S
= 3V, I
SINK
= 5mA
l
l
3
250
8
450
mV
mV
V
S
= 5V, No Load
V
S
= 5V, I
SINK
= 10mA
l
l
3
500
8
700
mV
mV
V
OH
Output Voltage Swing High V
S
= 3V, No Load
V
S
= 3V, I
SOURCE
= 5mA
l
l
2.94
2.25
2.98
2.40
V
V
V
S
= 5V, No Load
V
S
= 5V, I
SOURCE
= 10mA
l
l
4.94
3.8
4.98
4.0
V
V
I
SC
Short-Circuit Current (Note 2) V
S
= 3V, Short to GND
V
S
= 3V, Short to V
CC
10
15
15
25
mA
mA
V
S
= 5V, Short to GND
V
S
= 5V, Short to V
CC
15
15
20
25
mA
mA
The l denotes the specifi cations which apply over the specifi ed temperature range, otherwise specifi cations are at T
A
= 25°C.
V
S
= 3V, 0V; V
S
= 5V, 0V; V
CM
= V
OUT
= half supply, unless otherwise noted. (Note 4)