LTC6912
7
6912fa
ELECTRICAL CHARACTERISTICS The ● denotes the specifications that apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = 5V, AGND = 2.5V, Gain = 1, RL = 10k to midsupply point, unless
otherwise noted.
C, I SUFFIXES
H SUFFIX
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
Specifications for the LTC6912-1 ONLY
Offset Voltage Magnitude
Gain = 1
●
0.125
2
0.125
3.5
mV
(Internal Op-Amp, Note 8)
Offset Voltage Magnitude
Gain = 1
●
0.25
3.5
0.25
6.5
mV
Referred to INA or INB Pins
Gain = 10
●
0.14
2
0.14
4
mV
(Note 8)
Input Offset Voltage Drift,
6
10
V/°C
Internal Op Amp
DC Input Resistance at
DC VINA or VINB = 0V
INA or INB Pins (Note 9)
Gain = 0
●
>10
M
State = 8, Software Shutdown
●
>10
M
Gain = 1
●
10
k
Gain = 2
●
55
k
Gain = 5
●
22
k
Gain > 5
●
11
k
DC Input Resistance Drift at
Gain = 1
85
95
ppm/
°C
INA or INB Pins (Note 9)
Gain = 2
90
100
ppm/
°C
Gain = 5
100
110
ppm/
°C
Gain = 10
120
130
ppm/
°C
Gain = 20
130
140
ppm/
°C
Gain = 50
150
160
ppm/
°C
Gain = 100
190
200
ppm/
°C
DC Input Resistance Match
Gain = 1
●
10
RINA-RINB
Gain = 2
●
55
Gain = 5
●
55
Gain > 5
●
55
DC Small Signal Output Resistance DC VINA or VINB = 0V
at OUT A or OUT B Pins
Gain = 0
0.4
Gain = 1
0.7
Gain = 2
1.0
Gain = 5
1.9
Gain = 10
3.4
Gain = 20
6.4
Gain = 50
15
Gain = 100
30
State = 8, Software Shutdown
●
>1
M
Gain Bandwidth Product
Gain = 100
●
18
33
50
16
33
50
MHz
Wideband Noise
f = 1kHz to 200kHz
(Referred to Input)
Gain = 0 (Output Noise only)
8.9
VRMS
Gain = 1
15.6
VRMS
Gain = 2
11.1
VRMS
Gain = 5
8.3
VRMS
Gain = 10
7.4
VRMS
Gain = 20
7.0
VRMS
Gain = 50
6.7
VRMS
Gain = 100
6.3
VRMS