Datasheet

LMP90077, LMP90078, LMP90079, LMP90080
SNAS521F –JULY 2011–REVISED MARCH 2013 www.ti.com
Electrical Characteristics
Unless otherwise noted, the key for the condition is (VA = VIO = VREF) / ODR (SPS) / buffer / calibration / gain . Boldface
limits apply for T
MIN
≤ T
A
≤ T
MAX
; the typical values apply for T
A
= +25°C.
Symbol Parameter Conditions Min Typ Max Units
n Resolution 16 Bits
Effective Number 3V / all / ON / OFF / all. Shorted input. See Table 1 Bits
ENOB /
of Bits and Noise
NFR
5V / all / ON / OFF / all. Shorted input. See Table 3 Bits
Free Resolution
ODR Output Data Rates 1.6675 See Table 1 214.6 SPS
Gain FGA × PGA 1 See Table 3 128
3V / 214.65 / ON / ON / 1 -1 ± 0.5 +1 LSB
Integral Non-
INL
Linearity
3V & 5V / 214.65 / ON / ON / 16 ± 1 LSB
3V / all / ON / ON / all. Shorted input. See Table 2 µV
Total Noise
5V / all / ON / OFF / all. Shorted input. See Table 4 µV
Below Noise
3V & 5V / all / ON or OFF / ON / all µV
Floor (rms)
3V / 214.65 / ON / ON / 1 1.22 9.52 µV
OE Offset Error
3V / 214.65 / ON / ON / 128 0.00838 0.70 µV
5V / 214.65 / ON / ON / 1 1.79 8.25 µV
5V / 214.65 / ON / ON / 128 0.0112 0.63 µV
3V & 5V / 214.65 / ON or OFF/OFF/1-8 100 nV/°C
3V & 5V / 214.65 / ON / ON / 1-8 3 nV/°C
3V & 5V / 214.65 / ON / OFF / 16 25 nV/°C
Offset Drift Over
Temp
(1)
3V & 5V / 214.65 / ON / ON / 16 0.4 nV/°C
3V & 5V / 214.65 / ON / OFF / 128 6 nV/°C
3V & 5V / 214.65 / ON / ON / 128 0.125 nV/°C
nV / 1000
5V / 214.65 / ON / OFF / 1, T
A
= 150°C 2360
hours
Offset Drift over
Time
(1)
nV / 1000
5V / 214.65 / ON / ON / 1, T
A
= 150°C 100
hours
3V & 5V / 214.65 / ON / ON / 1 -80 7 80 ppm
3V & 5V / 13.42 / ON / ON / 16 50 ppm
GE Gain Error
3V & 5V / 13.42 / ON / ON / 64 50 ppm
3V & 5V / 13.42 / ON / ON / 128 100 ppm
Gain Drift over
3V & 5V / 214.65 / ON / ON / all 0.5 ppm/°C
Temp
(1)
ppm / 1000
5V / 214.65 / ON / OFF / 1, T
A
= 150°C 5.9
hours
Gain Drift over
Time
(1)
ppm / 1000
5V / 214.65 / ON / ON / 1, T
A
= 150°C 1.6
hours
CONVERTER'S CHARACTERISTIC
DC, 3V / 214.65 / ON / ON / 1 70 117 dB
Input Common
CMRR Mode Rejection DC, 5V / 214.65 / OFF / OFF / 1 90 120 dB
Ratio
50/60 Hz, 5V / 214.65 / OFF / OFF / 1 117 dB
Reference
Common Mode VREF = 2.5V 101 dB
Rejection
DC, 3V / 214.65 / ON / ON / 1 75 115 dB
Power Supply
PSRR
Rejection Ratio
DC, 5V / 214.65 / ON / ON / 1 112 dB
Normal Mode 47 Hz to 63 Hz, 5V / 13.42 / OFF / OFF
NMRR 78 dB
Rejection Ratio
(1)
/ 1
(1) This parameter is specified by design and/or characterization and is not tested in production.
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