ADC081S051

SNAS309F – APRIL 2005 – REVISED JANUARY 2014

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ADC081S051 Converter Electrical Characteristics

(1) (2)

The following specifications apply for VA = +2.7V to 5.25V, GND = 0V, fSCLK = 4 MHz to 10 MHz,

fSAMPLE = 200 ksps to 500 ksps, CL = 15 pF, unless otherwise noted. Boldface limits apply for TA = TMIN to TMAX:

all other limits TA = 25°C.

Symbol

Parameter

Conditions

Typical

Limits(2)

Units

STATIC CONVERTER CHARACTERISTICS

Resolution with No Missing Codes

8

Bits

VA = +2.7V to +3.6V

±0.04

±0.3

LSB (max)

INL

Integral Non-Linearity

+0.06

LSB (max)

VA = +4.75V to +5.25V

±0.3

−0.045

LSB (min)

VA = +2.7V to +3.6V

±0.05

±0.2

LSB (max)

DNL

Differential Non-Linearity

+0.06

LSB (max)

VA = +4.75V to +5.25V

±0.2

−0.05

LSB (min)

VA = +2.7V to +3.6V

−0.01

±0.2

LSB (max)

VOFF

Offset Error

VA = +4.75V to +5.25V

+0.04

±0.2

LSB (max)

VA = +2.7V to +3.6V

+0.01

±0.4

LSB (max)

GE

Gain Error

VA = +4.75V to +5.25V

−0.075

±0.4

LSB (max)

+0.04

LSB (max)

VA = +2.7V to +3.6V

±0.3

−0.045

LSB (min)

TUE

Total Unadjusted Error

+0.07

LSB (max)

VA = +4.75V to +5.25V

±0.3

−0.055

LSB (min)

DYNAMIC CONVERTER CHARACTERISTICS

VA = +2.7 to 5.25V

SINAD

Signal-to-Noise Plus Distortion Ratio

49.5

49

dB (min)

fIN = 100 kHz, −0.02 dBFS

VA = +2.7 to 5.25V

SNR

Signal-to-Noise Ratio

49.6

49

dB (min)

fIN = 100 kHz, −0.02 dBFS

VA = +2.7 to 5.25V

THD

Total Harmonic Distortion

−77

−65

dB (max)

fIN = 100 kHz, −0.02 dBFS

VA = +2.7 to 5.25V

SFDR

Spurious-Free Dynamic Range

68

65

dB (min)

fIN = 100 kHz, −0.02 dBFS

VA = +2.7 to 5.25V

ENOB

Effective Number of Bits

7.9

7.8

Bits (min)

fIN = 100 kHz, −0.02 dBFS

Intermodulation Distortion, Second

VA = +5.25V

−83

dB

Order Terms

fa = 103.5 kHz, fb = 113.5 kHz

IMD

Intermodulation Distortion, Third Order

VA = +5.25V

−82

dB

Terms

fa = 103.5 kHz, fb = 113.5 kHz

VA = +5V

11

MHz

FPBW

-3 dB Full Power Bandwidth

VA = +3V

8

MHz

ANALOG INPUT CHARACTERISTICS

VIN

Input Range

0 to VA

V

IDCL

DC Leakage Current

±1

µA (max)

Track Mode

30

pF

CINA

Input Capacitance

Hold Mode

4

pF

DIGITAL INPUT CHARACTERISTICS

VA = +5.25V

2.4

V (min)

VIH

Input High Voltage

VA = +3.6V

2.1

V (min)

VA = +5.25V

0.8

V (max)

VIL

Input Low Voltage

VA = +3.6V

0.4

V (max)

IIN

Input Current

VIN = 0V or VA

±0.1

±1

µA (max)

CIND

Digital Input Capacitance

2

4

pF (max)

(1)

Tested limits are ensured to AOQL (Average Outgoing Quality Level).

(2)

Data sheet min/max specification limits are ensured by design, test, or statistical analysis.

4

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