3

SP8537DS/03

SP8537 Micropower Sampling 10–Bit Voltage A/D Converter

© Copyright 2000 Sipex Corporation

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

0.8

0.8

Volts

V

Input High Voltage, VIH

2.0

2.0

Volts

V

Input Current IIN

+2.0

+2.0

µA

Input Capacitance

3.0

3.0

pF

DIGITAL OUTPUTS

Data Format

Data Coding

See Timing Diagram

VOH

4.0

2.0

Volts

V

VOL

0.4

0.4

Volts

V

AC ACCURACY

Spurious free Dynamic

71

72

dB

For all FFT’s

Range (SFDR)

(Full Differential Mode)

If V

fsample = 25kHz

fin = 12kHz

Total Harmonic Distortion (THD)

-67

-68

dB

Signal to Noise &

59

59

dB

If V

Distortion (SINAD)

fsample = 6.66kHz

fin = 2.8kHz

Signal to Noise (SNR)

60

60

dB

SAMPLING DYNAMICS

Acquisition Time to 0.05%

2

3.38

2

6.00

µs

-3dB Small Signal BW

5

4

MHz

Aperture Delay

20

30

nS

Aperture Jitter

150

150

pS

Common-Mode Rejection Ratio

70

80

70

80

dB

f

2.8kHz @ 3.3 volts

POWER SUPPLIES

Volts

V

CC

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

Supply Current Operation Mode

250

400

100

300

µA

(CS=0) 29.5kHz, 5 volt conversion

rate. 6.66kHz 3.3 volts

Shutdown Mode

0.001 0.5

0.001 0.5

µA

(CS=1)

Power Dissipation

Operating Mode

1.25

2

0.33 0.99

mW

Shutdown Mode

2.5

1.7

µW

TEMPERATURE RANGE

Commercial

0˚ to +70˚C

0˚ to +70˚C

˚C

Industrial

-40˚ to +85˚C

-40˚ to +85˚C

˚C

Storage

-65˚ to +150˚C

-65˚ to +150˚C

˚C