SP8528DS/01

SP8528 Micropower Sampling 12-Bit A/D Converter

© Copyright 2000 Sipex Corporation

2

ABSOLUTE MAXIMUM RATINGS

These are stress ratings only and functional operation of the device at

these ratings or any other above those indicated in the operation

sections of the specifications below is not implied. Exposure to absolute

maximum rating conditions for extended periods of time may affect

reliability.

(TA=+25˚C unless otherwise noted) .....................................................

VCC to GND ................................................................................. 7.0V

Vin to GND .............................................................. -0.3 to VCC +0.3V

Digital input to GND ................................................ -0.3 to VCC +0.3V

Digital output to GND .............................................. -0.3 to VCC +0.3V

Operating Temperature Range

Commercial (J, K Version) ........................................... 0˚C to 70˚C

Industrial (A, B Version) .......................................... -40˚C to +85˚C

Lead Temperature (Solder 10Sec) ............................................ +300˚C

Storage Temperature .................................................. -65˚C to +150˚C

Power Dissipation to 70˚C ........................................................ 500mW

SPECIFICATIONS

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

DC ACCURACY

Resolution

12

12

Bits

Integral Linearity

J,A

+0.6 +2.0

+0.6 +2.0

LSB

K,B

+0.6 +1.0

+0.6 +1.0

LSB

Differential Linearity Error

J,A

+0.75 +2.0

+0.75 +2.0

LSB

K,B

+0.75 +1.0

+0.75 +1.0

LSB

No Missing Codes

Gain Error

J,A

+2.0 +10

+2.0 +10

LSB

K,B

+2.0

+8

+2.0

+8

LSB

Offset Error

J,A

+1.5

+5

+3.0

+8

LSB

K,B

+1.5

+3

+3.0

+5

LSB

ANALOG INPUT

Input Signal FS Range

0

V

ref

0V

ref

Input Impedance

On Channel

20

20

pF

In Parallel with 100M

Ω

100

100

M

Ω

Off Channel

3

3

pF

In Parallel with 100M

Ω

100

100

M

Ω

Input Bias Current

.001

1

.001

1

µA

Analog Input Range

-.05

V

V

Volts

CONVERSION SPEED

Sample Time

1.5

1.5

clock

See Timing Diagrams

cycles

Conversion Time

12

12

clock

See Timing Diagrams

cycles

Complete Cycle

33.2

22.2

kHz

See Timing Diagrams

Clock Period

2.0

3.0

µS

See Timing Diagrams

Clock High Time

.9

1.4

µS

See Timing Diagrams

Clock Low Time

.9

1.4

µS

See Timing Diagrams