AD7904_15 datasheet(8/32 Pages) AD

8 / 32 page

AD7904/AD7914/AD7924

Data Sheet

Rev. C | Page 8 of 32

Parameter

B Version1

Unit

Test Conditions/Comments

LOGIC OUTPUTS

Output High Voltage, VOH

VDRIVE − 0.2

V min

ISOURCE = 200 μA, AVDD = 2.7 V to 5.25 V

Output Low Voltage, VOL

0.4

V max

ISINK = 200 μA

Floating-State Leakage Current

±1

μA max

Floating-State Output Capacitance3

pF max

Output Coding

Straight (natural) binary

CODING bit set to 1

Twos complement

CODING bit set to 0

CONVERSION RATE

Conversion Time

800

ns max

16 SCLK cycles with SCLK at 20 MHz

Track-and-Hold Acquisition Time2

300

ns max

Sine wave input

300

ns max

Full-scale step input

Throughput Rate

MSPS max

See the Serial Interface section

POWER REQUIREMENTS

VDD

2.7/5.25

V min/V max

VDRIVE

2.7/5.25

V min/V max

IDD4

Digital inputs = 0 V or VDRIVE

Normal Mode (Static)

600

μA typ

AVDD = 2.7 V to 5.25 V, SCLK on or off

Normal Mode (Operational)

2.7

mA max

AVDD = 4.75 V to 5.25 V, fSCLK = 20 MHz

mA max

AVDD = 2.7 V to 3.6 V, fSCLK = 20 MHz

Auto Shutdown Mode

960

μA typ

fSAMPLE = 250 kSPS

0.5

μA max

Static

Full Shutdown Mode

0.5

μA max

SCLK on or off (20 nA typ)

Power Dissipation4

Normal Mode (Operational)

13.5

mW max

AVDD = 5 V, fSCLK = 20 MHz

mW max

AVDD = 3 V, fSCLK = 20 MHz

Auto Shutdown Mode (Static)

2.5

μW max

AVDD = 5 V

1.5

μW max

AVDD = 3 V

Full Shutdown Mode

2.5

μW max

AVDD = 5 V

1.5

μW max

AVDD = 3 V

Temperature range for B versions: −40°C to +85°C.

See the Terminology section.

Sample tested @ 25°C to ensure compliance.

See the Power vs. Throughput Rate section.

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