Datasheet

LT6236/LT6237/LT6238
3
623637fa
For more information www.linear.com/LT6236
ELECTRICAL CHARACTERISTICS
T
A
= 25°C, V
S
= 5V, 0V; V
S
= 3.3V, 0V; V
CM
= V
OUT
= half supply,
ENABLE = 0V, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNIT
V
OS
Input Offset Voltage LT6236
LT6237MS8, LT6238GN
LT6237DD8
100
50
75
500
350
450
µV
µV
µV
Input Offset Voltage Match
(Channel-to-Channel) (Note 6)
100 600 µV
I
B
Input Bias Current 5 10 µA
I
B
Match (Channel-to-Channel) (Note 6) 0.1 0.9 µA
I
OS
Input Offset Current 0.1 0.6 µA
Input Noise Voltage 0.1Hz to 10Hz 180 nV
P-P
e
n
Input Noise Voltage Density f = 10kHz, V
S
= 5V 1.1 1.7 nV/√Hz
i
n
Input Noise Current Density, Balanced Source
Input Noise Current Density, Unbalanced Source
f = 10kHz, V
S
= 5V, R
S
= 10k
f = 10kHz, V
S
= 5V, R
S
= 10k
1
2.4
pA/√Hz
pA/√Hz
R
IN
Input Resistance Common Mode
Differential Mode
6.5
7.5
MΩ
kΩ
C
IN
Input Capacitance Common Mode
Differential Mode
2.9
7.7
pF
pF
A
VOL
Large-Signal Gain V
S
= 5V, V
O
= 0.5V to 4.5V, R
L
= 10k to V
S
/2
V
S
= 5V, V
O
= 0.5V to 4.5V, R
L
= 1k to V
S
/2
V
S
= 5V, V
O
= 1V to 4V, R
L
= 100Ω to V
S
/2
105
21
5.4
200
40
9
V/mV
V/mV
V/mV
V
S
= 3.3V, V
O
= 0.65V to 2.65V, R
L
= 10k to V
S
/2
V
S
= 3.3V, V
O
= 0.65V to 2.65V, R
L
= 1k to V
S
/2
90
16.5
175
32
V
/mV
V/mV
V
CM
Input Voltage Range Guaranteed by CMRR, V
S
= 5V, 0V
Guaranteed by CMRR, V
S
= 3.3V, 0V
1.5
1.15
4
2.65
V
V
CMRR Common Mode Rejection Ratio V
S
= 5V, V
CM
= 1.5V to 4V
V
S
= 3.3V, V
CM
= 1.15V to 2.65V
90
90
115
115
dB
dB
PSRR Power Supply Rejection Ratio V
S
= 3V to 10V 90 115 dB
Minimum Supply Voltage (Note 7) 3 V
V
OL
Output Voltage Swing Low (Note 8) No Load
I
SINK
= 5mA
V
S
= 5V, I
SINK
= 20mA
V
S
= 3.3V, I
SINK
= 15mA
4
85
240
185
40
190
460
350
mV
mV
mV
mV
V
OH
Output Voltage Swing High (Note 8) No Load
I
SOURCE
= 5mA
V
S
= 5V, I
SOURCE
= 20mA
V
S
= 3.3V, I
SOURCE
= 15mA
5
90
325
250
50
200
600
400
mV
mV
mV
mV
I
SC
Short-Circuit Current V
S
= 5V
V
S
= 3.3V
±30
±25
±45
±40
mA
mA
I
S
Supply Current per Amplifier
Disabled Supply Current per Amplifier ENABLE = V
+
– 0.35V
3.15
0.2
3.5
10
mA
µA
I
ENABLE
ENABLE Pin Current ENABLE = 0.3V –25 –75 µA