Datasheet

AD7176-2 Data Sheet
Rev. A | Page 6 of 68
Parameter Test Conditions/Comments Min Typ Max Unit
SYSTEM CALIBRATION
1
Full-Scale Calibration Limit 1.05 × FS V
Zero-Scale Calibration Limit −1.05 × FS V
Input Span 0.8 × FS 2.1 × FS V
POWER REQUIREMENTS
Power Supply Voltage
AVDD1 − AVSS 4.5 5.5 V
AVDD2 – AVSS 2 5.5 V
AVSS – DGND −2.75 0 V
IOVDD − DGND 2 5.5 V
IOVDD – AVSS For AVSS < DGND 6.35 V
POWER SUPPLY CURRENTS All outputs unloaded, digital inputs
connected to IOVDD or DGND
Full Operating Mode
AVDD1 Current External reference 1.5 1.75 mA
Internal reference 1.75 2.1 mA
AVDD2 Current External reference 4.3 4.9 mA
Internal reference 4.5 5.1 mA
IOVDD Current External clock 2 2.3 mA
Internal clock 2.25 2.6 mA
External crystal 2.5 mA
Standby Mode
Standby (LDO On) Internal reference off, total current
consumption
22 µA
Internal reference on, total current
consumption
415 µA
Power-Down Mode Full power-down, LDO, Internal
reference
0.5 10 µA
POWER DISSIPATION
Full Operating Mode AVDD2 = 2 V, IOVDD = 2 V,
external clock and reference
20.1 23.15 mW
AVDD2 = 5 V, IOVDD = 5 V,
external clock and reference
39 44.75 mW
AVDD2 = 2 V, IOVDD = 2 V,
internal clock and reference
22.25 25.9 mW
AVDD2 = 5 V, IOVDD = 5 V,
internal clock and reference
42.5
49
mW
Standby Mode Internal reference off, all supplies = 5 V 110 µW
Internal reference on, all supplies = 5 V 2.1 mW
Power-Down Mode Full power-down 2.5 50 µW
1
Specification is not production tested but is supported by characterization data at the initial product release.
2
Following a system or internal zero-scale calibration, the offset error is in the order of the noise for the programmed output data rate selected. A system full-scale
calibration reduces the gain error to the order of the noise for the programmed output data rate.
3
The long-term stability specification is noncumulative.