Datasheet

LTC6912
7
6912fa
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications that apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
S
= 5V, AGND = 2.5V, Gain = 1, R
L
= 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 µV/°C
Internal Op Amp
DC Input Resistance at DC V
INA
or V
INB
= 0V
INA or INB Pins (Note 9) Gain = 0
● >10 >10 MΩ
State = 8, Software Shutdown
● >10 >10 MΩ
Gain = 1
● 10 10 kΩ
Gain = 2
● 55kΩ
Gain = 5
● 22kΩ
Gain > 5
● 11kΩ
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 10 Ω
R
INA
-R
INB
Gain = 2 ● 55Ω
Gain = 5
● 55Ω
Gain > 5
● 55Ω
DC Small Signal Output Resistance DC V
INA
or V
INB
= 0V
at OUT A or OUT B Pins Gain = 0 0.4 0.4 Ω
Gain = 1 0.7 0.7 Ω
Gain = 2 1.0 1.0 Ω
Gain = 5 1.9 1.9 Ω
Gain = 10 3.4 3.4 Ω
Gain = 20 6.4 6.4 Ω
Gain = 50 15 15 Ω
Gain = 100 30 30 Ω
State = 8, Software Shutdown
● >1 >1 MΩ
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 8.9 µV
RMS
Gain = 1 15.6 15.6 µV
RMS
Gain = 2 11.1 11.1 µV
RMS
Gain = 5 8.3 8.3 µV
RMS
Gain = 10 7.4 7.4 µV
RMS
Gain = 20 7.0 7.0 µV
RMS
Gain = 50 6.7 6.7 µV
RMS
Gain = 100 6.3 6.3 µV
RMS