AD7894 查看數據表（PDF） - Analog Devices

零件编号

产品描述 (功能)

生产厂家

AD7894

5 V, 14-Bit Serial, 5 μs ADC in SO-8 Package

Analog Devices 

AD7894–SPECIFICATIONS (VDD = +5 V ؎ 5%, GND = 0 V, REF IN = +2.5 V. All specifications TMIN to TMAX unless

otherwise noted.)

Parameter

DYNAMIC PERFORMANCE2

Signal to (Noise + Distortion) Ratio3

@ +25°C

TMIN to TMAX

Total Harmonic Distortion (THD)3

Peak Harmonic or Spurious Noise3

Intermodulation Distortion (IMD)3

2nd Order Terms

3rd Order Terms

DC ACCURACY

Resolution

Minimum Resolution for Which

No Missing Codes Are Guaranteed

Relative Accuracy3

Differential Nonlinearity3

AD7894-2

Positive Gain Error3

Unipolar Offset Error

AD7894-10, AD7894-3 Only

Positive Gain Error3

Negative Gain Error3

Bipolar Zero Error

ANALOG INPUT

AD7894-10

Input Voltage Range

Input Current

AD7894-3

Input Voltage Range

Input Current

AD7894-2

Input Voltage Range

Input Current

REFERENCE INPUT

REF IN Input Voltage Range

Input Current

Input Capacitance4

LOGIC INPUTS

Input High Voltage, VINH

Input Low Voltage, VINL

Input Current, IIN

Input Capacitance, CIN4

LOGIC OUTPUTS

Output High Voltage, VOH

Output Low Voltage, VOL

Output Coding

AD7894-10, AD7894-3

AD7894-2

CONVERSION RATE

Conversion Time

Mode 1 Operation

Mode 2 Operation5

Track/Hold Acquisition Time3

SAMPLE AND HOLD

–3 dB Small Signal Bandwidth

Aperture Jitter

A Versionsl

B Versions1 Units

78

77

–86

–92

–92

–92

14

14

±2

–1 to +1.5

± 12

±8

±8

±8

± 10

78

dB min

77

dB min

–86

dB max

–92

dB typ

–92

dB typ

–92

dB typ

14

Bits

14

± 1.5

–1 to +1.5

Bits

LSB max

LSB max

± 10

LSB max

±6

LSB max

±6

LSB max

±6

LSB max

±8

LSB max

± 10

2

± 2.5

1.5

0 to +2.5

500

± 10

2

± 2.5

1.5

0 to +2.5

500

V

mA max

V

mA max

V

nA max

2.375/2.625

1

10

2.375/2.625 V min/V max

1

µA max

10

pF max

2.4

2.4

V min

0.8

0.8

V max

± 10

± 10

µA max

10

10

pF max

4.0

4.0

0.4

0.4

Twos Complement

Straight (Natural) Binary

V min

V max

5

5

µs max

10

10

µs max

0.35

0.35

µs max

7.5

7.5

MHz typ

50

50

ps typ

Test Conditions/Comments

fIN = 70 kHz Sine Wave, fSAMPLE = 160 kHz

See Figure 14

fIN = 10 kHz Sine Wave, fSAMPLE = 160 kHz,

Typically –87 dB. See Figure 15

fIN = 10 kHz Sine Wave, fSAMPLE = 160 kHz

fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 160 kHz

See Analog Input Section

See Analog Input Section

2.5 V ± 5%

VDD = 5 V ± 5%

VDD = 5 V ± 5%

VIN = 0 V to VDD

ISOURCE = 400 µA

ISINK = 1.6 mA

–2–

REV. 0

Share Link: