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ADC121C021_15 Datasheet, PDF (7/44 Pages) Texas Instruments – 12-Bit Analog-to-Digital Converter with Alert Function
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ADC121C021, ADC121C021Q, ADC121C027
www.ti.com
SNAS415F – JANUARY 2008 – REVISED MARCH 2013
Electrical Characteristics (continued)
The following specifications apply for VA = +2.7V to +5.5V, GND = 0V, fSCL up to 3.4MHz, fIN = 1kHz for fSCL up to 400kHz,
fIN = 10kHz for fSCL = 3.4MHz unless otherwise noted. Boldface limits apply for TA = TMIN to TMAX: all other limits TA = 25°C
unless otherwise noted. (1)
Symbol
Parameter
Conditions
Typical(2) Limits(2) Units (Limits)
POWER REQUIREMENTS
Supply Voltage Minimum
VA
Supply Voltage Maximum
2.7
V (min)
5.5
V (max)
Continuous Operation Mode -- 2-wire interface active.
IN
Supply Current
fSCL=400kHz
fSCL=3.4MHz
VA = 2.7V to 3.6V
VA = 4.5V to 5.5V
VA = 2.7V to 3.6V
VA = 4.5V to 5.5V
0.08
0.16
0.37
0.74
PN
Power Consumption
fSCL=400kHz
fSCL=3.4MHz
VA = 3.0V
VA = 5.0V
VA = 3.0V
VA = 5.0V
0.26
0.78
1.22
3.67
Automatic Conversion Mode -- 2-wire interface stopped and quiet (SCL = SDA = VA). fSAMPLE = TCONVERT * 32
IA
Supply Current
VA = 2.7V to 3.6V
VA = 4.5V to 5.5V
0.41
0.78
PA
Power Consumption
VA = 3.0V
VA = 5.0V
1.35
3.91
Power Down Mode (PD1) -- 2-wire interface stopped and quiet. (SCL = SDA = VA).
IPD1 Supply Current
See (5)
0.1
PPD1 Power Consumption
0.5
Power Down Mode (PD2) -- 2-wire interface active. Master communicating with a different device on the bus.
IPD2 Supply Current
fSCL=400kHz
VA = 2.7V to 3.6V
VA = 4.5V to 5.5V
13
27
fSCL=3.4MHz
VA = 2.7V to 3.6V
VA = 4.5V to 5.5V
89
168
PPD2 Power Consumption
fSCL=400kHz
fSCL=3.4MHz
VA = 3.0V
VA = 5.0V
VA = 3.0V
VA = 5.0V
0.04
0.14
0.29
0.84
0.14
0.30
0.55
0.99
0.59
1.2
0.2
0.9
45
80
150
250
mA (max)
mA (max)
mA (max)
mA (max)
mW
mW
mW
mW
mA (max)
mA (max)
mW
mW
µA (max)
µW (max)
µA (max)
µA (max)
µA (max)
µA (max)
mW
mW
mW
mW
(5) This parameter is ensured by design and/or characterization and is not tested in production.
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