AD7993 datasheet(3/27 Pages) AD

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–3–

REV. PrF

PRELIMINARYTECHNICAL DATA

(VDD = +2.7 V to +5.5 V, unless otherwise noted ; REFIN = 2.5 V; fSCL = 3.4 MHz unless

otherwise noted; TA = TMIN to TMAX, unless otherwise noted.)

Parameter

B Version

Units

Test Conditions/Comments

CONVERSION RATE

See Interface Section

Conversion

Time

µs typ

Track/Hold Acquisition Time

T B D

ns max

Full-Scale step input

T B D

ns max

Sine wave input <= 30 KHz

Throughput

Rate

3.4

KSPS max

Standard mode SCL = 100 kHz

KSPS max

Fast Mode SCL = 400 kHz

KSPS max

High-Speed Mode SCL =

3.4 MHz

POWER REQUIREMENTS

VDD

2.7/5.5 V

min/max

IDD

Digital Inputs = 0 V or VDD

Peak Current

T B D

µA max

Peak Current during conversion

Power Down Mode , Interface Inactive

0.2/0.6

µA max

VDD = 3 V/5 V.

Interface Active

0.05/0.2

mA max

VDD = 3 V/5 V 400 kHz SCL.

0.3/0.8

mA max

VDD = 3 V/5 V 3.4 MHz SCL.

Operating, Interface Inactive

0.06/0.15

mA max

VDD = 3 V/5 V 400 kHz SCL.

0.3/0.6

mA max

VDD = 3 V/5 V 3.4 MHz SCL.

Interface Active

0.15/0.35

mA max

VDD = 3 V/5 V 400 kHz SCL.

0.6/1.4

mA max

VDD = 3 V/5 V 3.4 MHz SCL.

NOTES

1Temperature ranges as follows: B Version: –40°C to +85°C.

2See Terminology.

3Sample tested @ +25°C to ensure compliance.

4See POWER VERSUS THROUGHPUT RATE section.

Specifications subject to change without notice.

AD7994–SPECIFICATIONS1

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