AD9731 datasheet(2/11 Pages) AD

2 / 11 page

–2–

REV. A

AD9731–SPECIFICATIONS

5/27/99 8 PM

(+VS = +5 V, –VS = –5.2 V, CLOCK = 125 MHz, RSET = 1.96 k

for 20.4 mA IOUT,

VREF = –1.25 V, unless otherwise noted.)

Parameter

Temp

Test Level

Min

Typ

Max

Units

RESOLUTION

Bits

THROUGHPUT RATE

+25

°C

165

170

MHz

DC ACCURACY

Differential Nonlinearity

+25

°C

0.25

LSB

Full

0.35

1.5

LSB

Integral Nonlinearity

+25

°C

0.6

LSB

Full

0.7

1.5

LSB

INITIAL OFFSET ERROR

Zero-Scale Offset Error

+25

°C

µA

Full

100

µA

Full-Scale Gain Error

+25

°C

2.5

% FS

Full

2.5

% FS

Offset Drift Coefficient

0.04

µA/°C

REFERENCE/CONTROL AMP

Internal Reference Voltage

+25

°C

–1.35

–1.25

–1.15

Internal Reference Voltage Drift

Full

100

µV/°C

Internal Reference Output Current3

Full

–50

+500

µA

Amplifier Input Impedance

+25

°CV

Ω

Amplifier Bandwidth

+25

°C

2.5

MHz

REFERENCE INPUT

Reference Input Impedance

+25

°C

4.6

Ω

Reference Multiplying Bandwidth5

+25

°C

MHz

OUTPUT PERFORMANCE

Output Current

4, 6

+25

°CV

Output Compliance

+25

°C

–1.5

Output Resistance

+25

°C

240

Ω

Output Capacitance

+25

°CV

Voltage Settling Time to 1/2 LSB (tST)

+25

°C

3.8

Propagation Delay (tPD)

+25

°C

2.9

Glitch Impulse

+25

°C

4.1

pVs

Output Slew Rate

+25

°C

400

µs

Output Rise Time

+25

°CV

Output Fall Time

+25

°CV

DIGITAL INPUTS

Input Capacitance

Full

Logic “1” Voltage

Full

2.0

Logic “0” Voltage

Full

0.8

Logic “1” Current

+25

°CVI

µA

Logic “0” Current

+25

°C

100

µA

Minimum Data Setup Time (tS)

+25

°C

1.2

Full

1.5

2.5

Minimum Data Hold Time (tH)

+25

°C

0.1

1.0

Full

0.1

1.0

Clock Pulsewidth Low (pwMIN)

+25

°CIV

Clock Pulsewidth High (pwMAX)

+25

°CIV

SFDR PERFORMANCE (Wideband)

2 MHz AOUT

+25

°CV

10 MHz AOUT

+25

°CV

20 MHz AOUT

+25

°CV

40 MHz AOUT

+25

°CV

65 MHz AOUT (Clock = 170 MHz)

+25

°CV

70 MHz AOUT (Clock = 170 MHz)

+25

°CV

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