AD7677 datasheet(2/20 Pages) AD

Numer części	AD7677

Szczegółowy opis	16-Bit, 1,-1 LSB INL,500 kSPS, Differential ADC

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Producent	AD [Analog Devices]

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REV. B

–2–

AD7676–SPECIFICATIONS (–40 C to +85 C,AVDD=DVDD=5V,OVDD=2.7 V to 5.25 V, unless otherwise noted.)

Parameter

Conditions

Min

Typ

Max

Unit

RESOLUTION

16

Bits

ANALOG INPUT

Voltage Range

VIN+ – VIN–

–VREF

+VREF

V

Operating Input Voltage

VIN+, VIN– to AGND

–0.1

+3

V

Analog Input CMRR

fIN = 10 kHz

79

dB

Input Current

500 kSPS Throughput

5

µA

Input Impedance

See Analog Inputs Section

THROUGHPUT SPEED

Complete Cycle

2

µs

Throughput Rate

0

500

kSPS

DC ACCURACY

Integral Linearity Error

–1

+1

LSB1

No Missing Codes

16

Bits

Transition Noise

0.35

LSB

+Full-Scale Error2

–22

+22

LSB

–Full-Scale Error

2

–22

+22

LSB

Zero Error

2

–8

+8

LSB

Power Supply Sensitivity

AVDD = 5 V

± 5%

±0.7

LSB

AC ACCURACY

Signal-to-Noise

fIN = 20 kHz

92

94

dB

3

fIN = 45 kHz

94

dB

3

Spurious-Free Dynamic Range

fIN = 20 kHz

104.5

110

dB3

fIN = 45 kHz

110

dB

3

Total Harmonic Distortion

fIN = 20 kHz

–110

–103.5

dB

3

fIN = 45 kHz

–110

dB3

Signal-to-(Noise + Distortion)

fIN = 20 kHz

92

94

dB

3

fIN = 45 kHz

94

dB

3

fIN = 45 kHz, –60 dB Input

34

dB3

–3 dB Input Bandwidth

3.9

MHz

SAMPLING DYNAMICS

Aperture Delay

2ns

Aperture Jitter

5

ps rms

Transient Response

Full-Scale Step

750

ns

REFERENCE

External Reference Voltage Range

2.3

2.5

AVDD – 1.85

V

External Reference Current Drain

500 kSPS Throughput

170

µA

DIGITAL INPUTS

Logic Levels

VIL

–0.3

+0.8

V

VIH

+2.0

OVDD + 0.3

V

IIL

–1

+1

µA

IIH

–1

+1

µA

DIGITAL OUTPUTS

Data Format

Parallel or Serial 16-Bit Conversion Results Available

Pipeline Delay

Immediately after Completed Conversion

VOL

ISINK = 1.6 mA

0.4

V

VOH

ISOURCE = –100

µA

OVDD – 0.6

V

POWER SUPPLIES

Specified Performance

AVDD

4.75

5

5.25

V

DVDD

4.75

5

5.25

V

OVDD

2.7

5.254

V

Operating Current

500 kSPS Throughput

AVDD

9.5

mA

DVDD5

3.9

mA

OVDD

5

37

µA

Power Dissipation

5

500 kSPS Throughput

67

74

mW

100 SPS Throughput

15

µW

In Power-Down Mode

6

7

µW

TEMPERATURE RANGE

7

Specified Performance

TMIN to TMAX

–40

+85

°C

NOTES

1LSB means Least Significant Bit. Within the

± 2.5 V input range, one LSB is 76.3 µV.

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 maximum should be the minimum of 5.25 V and DVDD + 0.3 V.

5Tested in Parallel Reading Mode.

6With OVDD below DVDD + 0.3 V and all digital inputs forced to DVDD or DGND, respectively.

7Contact factory for extended temperature range.

Specifications subject to change without notice.

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