SP8528 Просмотр технического описания (PDF) - Signal Processing Technologies

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SP8528

Micropower Sampling 12-Bit A/D Converter

Signal Processing Technologies 

SPECIFICATIONS (cont.)

Unless otherwise noted the following specifications apply for VCC=5V or 3.3V with limits applicable for Tmin to Tmax. Typical applies for Ta=25˚C.

VCC=5.0V

VCC=3.3V

PARAMETERS

MIN. TYP. MAX. MIN. TYP. MAX. UNITS CONDITIONS

DIGITAL INPUTS

Input Low Voltage, VIL

Input High Voltage, VIH

Input Current IIN

Input Capacitance

0.8

0.8 Volts

2.0

2.0

Volts

+2.0

+2.0 µA

3.0

3.0

pF

VDD=5V +5%

VDD=5V +5%

DIGITAL OUTPUTS

Data Format

Data Coding

VOH

VOL

AC ACCURACY

Spurious free Dynamic

Range (SFDR)

4.0

2.0

Volts

0.4

0.4 Volts

86

86

dB

Total Harmonic Distortion (THD)

-83

Signal to Noise &

73

Distortion (SINAD)

Signal to Noise (SNR)

73.5

-80

dB

72

dB

72.5

dB

See Timing Diagram

VDD=5V ±5%, IOH=-0.4mA

VDD=5V ±5%, IOL=+1.6mA

For all FFT’s

(Full Differential Mode)

If VCC = 5V

fsample = 31.25kHz

fin = 15kHz

If VCC = 3.3V

fsample = 20.8kHz

fin = 5kHz

SAMPLING DYNAMICS

Acquisition Time to 0.01%

23

-3dB Small Signal BW

4

Aperture Delay

20

Aperture Jitter

150

Common-Mode Rejection Ratio 70 80

3 4.5 µs

3

30

150

70 80

MHz

nS

pS

dB

fCM = 15kHz @ 5 volts

2.8kHz @ 3.3 volts

POWER SUPPLIES

VCC

ICC

Operation Mode

Shutdown Mode

Power Dissipation

Operating Mode

Shutdown Mode

Volts

+3.0 +5.0 +5.5 +3.0 +3.3 +5.5

230 400

.001 0.5

80 300 µA

.001 0.5 µA

(CS=0) 33.2kHz, 5V conversion

rate. 22.2kHz 3.3 volts

(CS=1)

1.15 2

.005 10

0.26 0.99 mW

.003 6.6 µW

TEMPERATURE RANGE

Commercial

Industrial

Storage

0˚ to +70˚C

-40˚ to +85˚C

-65˚ to +150˚C

0˚ to +70˚C ˚C

-40˚ to +85˚C ˚C

-65˚ to +150˚C ˚C

SP8528DS/01

SP8528 Micropower Sampling 12-Bit A/D Converter

3

© Copyright 2000 Sipex Corporation

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