SPT

2

8/1/00

SPT774

ELECTRICAL SPECIFICATIONS

TEST

TEST

SPT774C

SPT774B

PARAMETER

CONDITIONS

LEVEL

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

DC ELECTRICAL CHARACTERISTICS

Resolution

VI

12

12

Bits

Linearity Error

±1

±0.5

LSB

Differential Linearity

No Missing Codes

VI

12

12

Bits

Unipolar Offset; 10 V, 20 V

+25

°C Adjustable to Zero

VI

±2

±2

LSB

Bipolar Offset;

±5 V, ±10 V

+25

°C Adjustable to Zero

VI

±10

±4

LSB

Full Scale Calibration Error1

+25

°C Adjustable to Zero

VI

0.30

0.30

% of FS

Full Scale Calibration Error1

No Adjustment to Zero

V

0.47

0.37

% of FS

Temperature Coefficients

Using Internal Reference

Unipolar Offset

V

±1.0

±1.0

ppm/

°C

Bipolar Offset

V

±2.0

±2.0

ppm/

°C

Full Scale Calibration

V

±12

±12

ppm/

°C

Power Supply Rejection

Max change in full

VI

±0.5

±0.5

LSB

scale calibration

Analog Input Ranges

Bipolar

VI

-5

+5

-5

+5

Volts

VI

-10

+10

-10

+10

Volts

Unipolar

VI

0

+10

0

+10

Volts

VI

0

+20

0

+20

Volts

Input Impedance

10 Volt Span

VI

8.5

12

8.5

12

k

Ω

20 Volt Span

VI

35

50

35

50

k

Ω

Note:

Operation at any Absolute Maximum Rating is not implied. See Operating Conditions for proper nominal applied

conditions in typical applications.

Output

Reference Output Voltage .............. Indefinite Short to GND

Temperature

Operating Temperature, Ambient .................... 0 to +70

°C

Junction ......................... +165

°C

Lead Temperature, (Soldering 10 Seconds) ........... +300

°C

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

°C

Supply Voltages

Analog to Digital Ground (AGND to DGND) .................

±1 V

Input Voltages

Control Input Voltages (to DGND)

Analog Input Voltage (to AGND)