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ADC121C027 Fiches technique(PDF) 6 Page - Texas Instruments

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No de pièce ADC121C027
Description  I2C-Compatible, 12-Bit Analog-to-Digital Converter with Alert Function
Download  44 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

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ADC121C021, ADC121C021Q, ADC121C027
SNAS415F – JANUARY 2008 – REVISED MARCH 2013
www.ti.com
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)
DYNAMIC CONVERTER CHARACTERISTICS
VA = +2.7V to +3.6V
11.7
11.3
Bits (min)
ENOB
Effective Number of Bits
VA = +3.6V to +5.5V
11.5
Bits (min)
VA = +2.7V to +3.6V
72.5
70.4
dB (min)
SNR
Signal-to-Noise Ratio
VA = +3.6V to +5.5V
71
dB (min)
VA = +2.7V to +3.6V
−92
−78
dB (max)
THD
Total Harmonic Distortion
VA = +3.6V to +5.5V
−87
dB (max)
VA = +2.7V to +3.6V
72.6
70
dB (min)
SINAD
Signal-to-Noise Plus Distortion Ratio
VA = +3.6V to +5.5V
71
dB (min)
VA = +2.7V to +3.6V
90
76
dB (min)
SFDR
Spurious-Free Dynamic Range
VA = +3.6V to +5.5V
87
dB (min)
VA = +3.0V,
−89
dB
fa = 1.035 kHz, fb = 1.135 kHz
Intermodulation Distortion, Second
Order Terms (IMD2)
VA = +5.0V,
−91
dB
fa = 1.035 kHz, fb = 1.135 kHz
IMD
VA = +3.0V,
−88
dB
fa = 1.035 kHz, fb = 1.135 kHz
Intermodulation Distortion, Third
Order Terms (IMD3)
VA = +5.0V,
−88
dB
fa = 1.035 kHz, fb = 1.135 kHz
VA = +3.0V
8
MHz
FPBW
Full Power Bandwidth (
−3dB)
VA = +5.0V
11
MHz
ANALOG INPUT CHARACTERISTICS
VIN
Input Range
0 to VA
V
IDCL
DC Leakage Current(4)
±1
µA (max)
Track Mode
30
pF
CINA
Input Capacitance
Hold Mode
3
pF
SERIAL INTERFACE INPUT CHARACTERISTICS (SCL, SDA)
VIH
Input High Voltage
0.7 x VA
V (min)
VIL
Input Low Voltage
0.3 x VA
V (max)
IIN
Input Current(4)
±1
µA (max)
CIN
Input Pin Capacitance
3
pF
VHYST
Input Hysteresis
0.1 x VA
V (min)
ADDRESS SELECTION INPUT CHARACTERISTICS (ADDR)
VIH
Input High Voltage
VA - 0.5V
V (min)
VIL
Input Low Voltage
0.5
V (max)
IIN
Input Current(4)
±1
µA (max)
LOGIC OUTPUT CHARACTERISTICS, OPEN-DRAIN (SDA, ALERT)
ISINK = 3 mA
0.4
V (max)
VOL
Output Low Voltage
ISINK = 6 mA
0.6
V (max)
High Impedance Output Leakage
IOZ
±1
µA (max)
Current(4)
Output Coding
Straight (Natural) Binary
(4)
This parameter is ensured by design and/or characterization and is not tested in production.
6
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Product Folder Links: ADC121C021 ADC121C021Q ADC121C027


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