4

SP8537DS/03

SP8537 Micropower Sampling 10–Bit Voltage A/D Converter

© Copyright 2000 Sipex Corporation

SPECIFICATIONS (cont.)

Recommended Operating Conditions

VCC=5.0V

VCC=3.3V

SYMBOL

PARAMETERS

MIN.

TYP.

MAX.

MIN.

TYP.

MAX.

UNITS

V

CC

Supply Voltage

+3.0

+5.0

+5.5

+3.0

+3.3

+5.5

Volts

f

CLK

Clock Frequency

444

100

kHz

t

CYC

Total Cycle Time

33.9

150.2

µS

t

CLK

Clock Period

2.25

10.0

µS

t

en

SCLK to D

80

200

150

300

nS

t

DIS

CSN to D

80

200

150

300

nS

t

R

D

5

25

10

50

nS

t

F

D

5

25

10

50

nS

t

HDO

D

80

200

150

300

nS

t

hDI

Hold Time D

50

0

50

0

nS

CLK^

t

suCS

Setup Time CSv

100

150

nS

Before CLK^

t

suDI

Setup Time, D

IN

100

10

150

15

nS

Stable Before CLK^

t

WHCLK

CLK High Time

1

4.5

µS

t

WLCLK

CLK Low Time

1

4.5

µS

t

WHCS

CS High Time between

100

150

nS

Data Transfers Cycles

t

SAMPLE

S/H Acquisition Time

1.5

1.5

SCLK Cycles

t

CONV

ADC Conversion Time

10

10

SCLK Cycles

PIN ASSIGNMENTS

Pin 1- CS - Chip Select.

Pin 2- CH0 - Channel 0

Pin 3- CH1 - Channel 1

Pin 4- GND - Ground

Pin 5- D

Pin 6 - D

Pin 7- SCLK - Serial Clock

Pin 8- V

PIN DESCRIPTION

CS

CH0

CH1

GND

SCLK

1

2

3

4

8

7

6

5

w

w