Datasheet

LTC6255/LTC6256/LTC6257
625567fb
5
1.8V electricAl chArActeristics
The l denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. V
SUPPLY
= 1.8V, V
CM
= V
OUT
= 0.4V, C
L
= 10pF, V
SHDN
is
unconnected.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Input Offset Voltage V
CM
= V
–
+ 0.3V
l
–350
–700
100 350
700
µV
µV
V
CM
= V
+
– 0.3V
l
–350
–700
100 350
700
µV
µV
V
OS
TC Input Offset Voltage Drift V
CM
= V
–
+ 0.3V, V
+
– 0.3V
l
1.5 µV/°C
I
B
Input Bias Current (Note 7) V
CM
= V
–
+ 0.3V
l
–50
–75
–8 50
75
nA
nA
V
CM
= V
+
– 0.3V
l
–50
–75
5 50
75
nA
nA
I
OS
Input Offset Current V
CM
= V
–
+ 0.3V
l
–20
–35
2 20
35
nA
nA
V
CM
= V
+
– 0.3V
l
–20
–35
2 20
35
nA
nA
e
n
Input Voltage Noise Density f = 1kHz, V
CM
= 0.4V 21 nV/√Hz
Input Noise Voltage f = 0.1Hz to 10Hz 2.5 µV
P-P
i
n
Input Current Noise Density f = 1kHz, V
CM
= 0V to 0.8V (PNP Input)
f = 1kHz, V
CM
= 1V to 1.8V (NPN Input)
580
870
f
A
/√Hz
f
A
/√Hz
R
IN
Input Resistance Differential
Common Mode
1
10
MΩ
MΩ
C
IN
Input Capacitance Differential
Common Mode
0.4
0.3
pF
pF
CMRR Common Mode Rejection Ratio V
CM
= 0.2V to 1.6V
l
74
67
90 dB
dB
IVR Input Voltage Range
l
–0.1 1.9 V
PSRR Power Supply Rejection Ratio V
CM
= 0.4V, V
S
Ranges from 1.8V to 5V
l
82
78
100 dB
dB
A
V
Large Signal Gain V
OUT
= 0.5V to 1.3V, R
LOAD
= 100k
l
30
17
110 V/mV
V/mV
V
OUT
= 0.5V to 1.3V, R
LOAD
= 10k
l
15
5
50 V/mV
V/mV
V
OL
Output Swing Low (Input Overdrive 30mV),
Measured from V
–
No Load
l
6 35
40
mV
mV
I
SINK
= 100µA
l
10 40
45
mV
mV
I
SINK
= 1mA
l
30 75
90
mV
mV