AD7112 datasheet(3/12 Pages) AD

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AD7112

REV. 0

–3–

TIMING SPECIFICATIONS1

Parameter

TA = +25 CTA = –40 C to +85 C

Units

Conditions/Comments

to WR Setup Time

tCS

ns min

See Figure 3.

to WR Hold Time

tCH

ns min

DAC Select to WR Setup Time

tAS

ns min

DAC Select to WR Hold Time

tAH

ns min

Data Valid to WR Setup Time

tDS

ns min

Data Valid to WR Hold Time

tDH

ns min

Pulse Width

tWR

ns min

NOTES

1Timing specifications guaranteed by design not production tested. All input signals are specified with tr = tf = 5 ns (10% to 90% of 5 V) and timed from a voltage

level of 1.6 V.

Specifications subject to change without notice.

AC PERFORMANCE CHARACTERISTICS1

TA =

–40 C to

Parameter

+25 C

+85 C

Units

Conditions/Comments

DC Supply Rejection

∆ Gain/∆ V

0.001

0.005

dB/% max

∆ V

DD = ± 5%. Input Code = 00000000

Digital-to-Analog Glitch Impulse

nV s typ

Measured with AD843 as output amplifier for input

code transition 10000000 to 00000000.

Output Capacitance, COUT A, COUT B

pF max

AC Feedthrough

VIN A to OUT A

–94

–90

dB max

VIN A, VIN B = 6 V rms at 1 kHz. DAC

Registers loaded with all 1s.

VIN B to OUT B

–94

–90

dB max

Channel-to-Channel Isolation

VIN A to OUT B

–87

dB typ

VIN A = 6 V rms at 10 kHz sine wave,

VIN B = 0 V. DAC Registers loaded with all 0s.

VIN B to OUT A

–87

dB typ

VIN B = 6 V rms at 10 kHz sine wave,

VIN A = 0 V. DAC Registers loaded with all 0s.

Digital Feedthrough

nV s typ

Measured with input code transitions of all 0s to all 1s.

Output Noise Voltage Density

(30 Hz to 50 kHz)

nV/

√Hz typ Measured between R

FB A and OUT A or between

RFB B and OUT B.

Total Harmonic Distortion

–91

dB typ

VIN A = VIN B = 6 V rms at 1 kHz. DAC

Registers loaded with all 0s.

NOTES

1Guaranteed by design, not production tested.

Specifications subject to change without notice.

(VDD = +5 V

5%; 0UT A = OUT B = AGND = DGND = O V; VIN A = VIN B = 10 V)

(VDD = +5 V

5%; 0UT A = OUT B = AGND = DGND = 0 V; VIN A =

VIN B = 10 V. Output amplifier AD712 except where noted.)

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