ADC122S021 datasheet(4/25 Pages) TI

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ADC102S021

SNAS281G – FEBRUARY 2005 – REVISED MARCH 2013

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ADC102S021 Converter Electrical Characteristics

(1)

The following specifications apply for VA = +2.7V to 5.25V, GND = 0V, CL = 50 pF, fSCLK = 0.8 MHz to 3.2 MHz, fSAMPLE = 50

ksps to 200 ksps, unless otherwise noted. Boldface limits apply for TA = TMIN to TMAX: all other limits TA = 25°C.

Parameter

Test Conditions

Typ

Limits(1)

Units

STATIC CONVERTER CHARACTERISTICS

Resolution with No Missing Codes

Bits

+0.3

LSB (max)

INL

Integral Non-Linearity

±0.13

−0.4

LSB (min)

DNL

Differential Non-Linearity

±0.13

±0.4

LSB (max)

VOFF

Offset Error

+0.1

±0.4

LSB (max)

OEM

Channel to Channel Offset Error Match

±0.02

±0.5

LSB (max)

FSE

Full-Scale Error

−0.11

±0.7

LSB (max)

Channel to Channel Full-Scale Error

FSEM

+0.02

±0.5

LSB (max)

Match

DYNAMIC CONVERTER CHARACTERISTICS

VA = +2.7 to 5.25V

SINAD

Signal-to-Noise Plus Distortion Ratio

61.8

dB (min)

fIN = 39.9 kHz, −0.02 dBFS

VA = +2.7 to 5.25V

SNR

Signal-to-Noise Ratio

61.8

61.3

dB (min)

fIN = 39.9 kHz, −0.02 dBFS

VA = +2.7 to 5.25V

THD

Total Harmonic Distortion

−86

−72

dB (max)

fIN = 39.9 kHz, −0.02 dBFS

VA = +2.7 to 5.25V

SFDR

Spurious-Free Dynamic Range

dB (min)

fIN = 39.9 kHz, −0.02 dBFS

VA = +2.7 to 5.25V

ENOB

Effective Number of Bits

9.9

9.8

Bits (min)

fIN = 39.9 kHz, −0.02 dBFS

VA = +5.25V

Channel-to-Channel Crosstalk

−87

fIN = 39.9 kHz

Intermodulation Distortion, Second

VA = +5.25V

−82

Order Terms

fa = 40.161 kHz, fb = 41.015 kHz

IMD

Intermodulation Distortion, Third Order

VA = +5.25V

−81

Terms

fa = 40.161 kHz, fb = 41.015 kHz

VA = +5V

MHz

FPBW

-3 dB Full Power Bandwidth

VA = +3V

MHz

ANALOG INPUT CHARACTERISTICS

VIN

Input Range

0 to VA

IDCL

DC Leakage Current

±1

µA (max)

Track Mode

CINA

Input Capacitance

Hold Mode

DIGITAL INPUT CHARACTERISTICS

VA = +5.25V

2.4

V (min)

VIH

Input High Voltage

VA = +3.6V

2.1

V (min)

VIL

Input Low Voltage

0.8

V (max)

IIN

Input Current

VIN = 0V or VA

±0.1

±10

µA (max)

CIND

Digital Input Capacitance

pF (max)

(1)

The min/max specification limits are specified by design, test, or statistical analysis.

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