Datasheet

ZADCS1282/1242/1222 Family

Copyright © 2008, ZMD AG, Rev. 1.1

All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The

Information furnished in this publication is preliminary and subject to changes without notice.

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1.5

Electrical Characteristics

1.5.1 General Parameters

Parameter

Symbol Conditions

Min

Typ

Max

Unit

DC Accuracy

Resolution

12

Bits

Relative Accuracy

ZADCS1282 / ZADCS1282V

ZADCS1242 / ZADCS1242V

ZADCS1222 / ZADCS1222V

± 1.0 LSB

No Missing Codes

NMC

12

Bits

Differential Nonlinearity

ZADCS1282 / ZADCS1282V

ZADCS1242 / ZADCS1242V

ZADCS1222 / ZADCS1222V

± 1.0 LSB

Offset Error

± 0.5

± 3.0 LSB

Gain Error

± 0.5

± 4.0 LSB

Gain Temperature Coefficient

± 0.25

ppm/°C

Dynamic Specifications (10kHz sine-wave input, 0V to 2.500Vpp, 200ksps, 3.2MHz external clock)

Signal-to-Noise + Distortion Ratio

SINAD

70

73

dB

Total Harmonic Distortion

THD

Up to the 5

-88

-80

dB

Spurious-Free Dynamic Range

SFDR

76

80

dB

Small-Signal Bandwidth

-3dB roll off

3.8

MHz

Conversion Rate

Sampling Time

(= Track/Hold Acquisition Time)

Ext. Clock = 3.2MHz, 2.5 clocks/ acquisi-

tion

0.781

µs

Ext. Clock = 3.2MHz, 12 clocks/ conver-

sion

3.75

µs

Conversion Time

Int. Clock = 3.2MHz +/- 12% tolerance

3.30

4.20

µs

Aperture Delay

30

ns

Aperture Jitter

< 50

ps

External Clock Frequency

0.1

3.2

MHz

Internal Clock Frequency

2.81

3.2

3.58

MHz

Analog Inputs

Unipolar, COM = 0V

0 to VREF

Input Voltage Range, Single-

Ended and Differential

Bipolar, COM = VREF/2

± VREF / 2

V

Input Capacitance

16

pF