AD7679 datasheet(3/24 Pages) AD

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–3–

AD7671

Parameter

Conditions

Min

Typ

Max

Unit

POWER SUPPLIES

Specified Performance

AVDD

4.75

5.25

DVDD

4.75

5.25

OVDD

2.7

5.25

Operating Current

1 MSPS Throughput

AVDD

DVDD

7.2

OVDD

Power Dissipation

6, 7

666 kSPS Throughput

100 SPS Throughput

1 MSPS Throughput

112

125

In Power-Down Mode

TEMPERATURE RANGE

Specified Performance

TMIN to TMAX

–40

+85

∞C

NOTES

1LSB means least significant bit. With the

±5 V input range, one LSB is 152.588 mV.

2See Definition of Specifications section. These specifications do not include the error contribution from the external reference.

3All specifications in dB are referred to a full-scale input FS. Tested with an input signal at 0.5 dB below full scale, unless otherwise specified.

4The max should be the minimum of 5.25 V and DVDD + 0.3 V.

5In Warp Mode.

6Tested in Parallel Reading Mode.

7Tested with the 0 V to 5 V range and V

IN – VINGND = 0 V. See Power Dissipation section.

8In Impulse Mode.

9With OVDD below DVDD + 0.3 V and all digital inputs forced to DVDD or DGND, respectively.

10Contact factory for extended temperature range.

Specifications subject to change without notice.

Table I. Analog Input Configuration

Input Voltage

Input

Range

IND(4R)

INC(4R)

INB(2R)

INA(R)

Impedance

±4 REF2

VIN

INGND

REF

1.63 k

±2 REF

VIN

INGND

REF

948

±REF

VIN

REF

711

0 V to 4 REF

VIN

INGND

948

0 V to 2 REF

VIN

INGND

711

0 V to REF

VIN

Note 3

NOTES

1Typical analog input impedance.

2With REF = 3 V, in this range, the input should be limited to –11 V to +12 V.

3For this range the input is high impedance.

TIMING SPECIFICATIONS

Parameter

Symbol

Min

Typ

Max

Unit

Refer to Figures 11 and 12

Convert Pulsewidth

5ns

Time between Conversions

1/1.25/1.5

Note 1

(Warp Mode/Normal Mode/Impulse Mode)

CNVST LOW to BUSY HIGH Delay

BUSY HIGH All Modes Except in Master Serial Read after

0.75/1/1.25

Convert Mode (Warp Mode/Normal Mode/Impulse Mode)

Aperture Delay

2ns

End of Conversion to BUSY LOW Delay

Conversion Time (Warp Mode/Normal Mode/Impulse Mode)

0.75/1/1.25

Acquisition Time

250

RESET Pulsewidth

(–40 C to +85 C, AVDD = DVDD = 5 V, OVDD = 2.7 V to 5.25 V, unless otherwise noted.)

REV. C

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