AD7989-5BCPZ-R2 datasheet(3/24 Pages) AD

3 / 24 page

Data Sheet

AD7989-1/AD7989-5

SPECIFICATIONS

VDD = 2.5 V, VIO = 2.3 V to 5.5 V, VREF = 5 V, TA = −40°C to +85°C, unless otherwise noted.

Table 2.

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

RESOLUTION

Bits

ANALOG INPUT

Voltage Range

IN+ − IN−

−VREF

+VREF

Absolute Input Voltage

IN+, IN−

−0.1

VREF + 0.1

Common-Mode Input Range

IN+, IN−

VREF × 0.475

VREF × 0.5

VREF × 0.525

Analog Input CMRR

fIN = 450 kHz

Leakage Current at 25°C

Acquisition phase

200

Input Impedance

See the Analog Inputs section

ACCURACY

No Missing Codes

Bits

Differential Nonlinearity Error

−0.85

±0.5

+1.5

LSB

Integral Nonlinearity Error

−2

±1

LSB

Transition Noise

VREF = 5 V

1.05

LSB1

Gain Error, TMIN to TMAX2

−0.023

+0.004

+0.023

% of FS

Gain Error Temperature Drift

±1

ppm/°C

Zero Error, TMIN to TMAX2

±100

+700

µV

Zero Temperature Drift

0.5

ppm/°C

Power Supply Rejection Ratio

VDD = 2.5 V ± 5%

THROUGHPUT

AD7989-1 Conversion Rate

100

kSPS

AD7989-5 Conversion Rate

500

kSPS

Transient Response

Full-scale step

400

AC ACCURACY

Dynamic Range

VREF = 5 V

dB3

VREF = 2.5 V

dB3

Oversampled Dynamic Range4

fO = 1 kSPS

126

dB3

Signal-to-Noise Ratio

fIN = 1 kHz, VREF = 5 V, TA = 25°C

95.5

dB3

fIN = 1 kHz, VREF = 2.5 V, TA = 25°C

92.5

dB3

Spurious-Free Dynamic Range

fIN = 10 kHz

−115

dB3

Total Harmonic Distortion5

fIN = 10 kHz

−120

dB3

Signal-to-Noise-and-Distortion Ratio

fIN = 1 kHz, VREF = 5 V, TA = 25°C

dB3

LSB means least significant bit. With the ±5 V input range, 1 LSB is 38.15 µV.

See the Terminology section. These specifications include full temperature range variation but not the error contribution from the external reference.

All specifications expressed in decibels are referred to a full-scale input FSR and tested with an input signal at 0.5 dB below full scale, unless otherwise specified.

Dynamic range is obtained by oversampling the ADC running at a throughput, fS, of 500 kSPS followed by postdigital filtering with an output word rate of fO.

Tested fully in production at fIN = 1 kHz.

Rev. A | Page 3 of 24

AD7989-5BCPZ-R2 数据表(PDF) 3 Page - Analog Devices

AD7989-5BCPZ-R2 数据表(HTML) 3 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

数据表下载