SPT774 Ver la hoja de datos (PDF) - Signal Processing Technologies

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SPT774

FAST, COMPLETE 12-BIT µP COMPATIBLE A/D CONVERTER WITH SAMPLE/HOLD

Signal Processing Technologies 

ABSOLUTE MAXIMUM RATINGS (Beyond which damage may occur) 1 25 °C

Supply Voltages

Mode Control Voltage (VEE to DGND) .................... 0 to +7 V

Logic Supply Voltage (VDD to DGND) ...................0 to +7 V

Analog to Digital Ground (AGND to DGND) ................. ±1 V

Input Voltages

Control Input Voltages (to DGND)

(CE, CS, Ao, 12/8, R/C) ......................... -0.5 to VDD +0.5 V

Analog Input Voltage (to AGND)

(REF IN, BIP OFF, 10 VIN) ...................................... ±16.5 V

20 V VIN Input Voltage (to AGND) .............................. ±24 V

Output

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

Momentary Short to VDD

Temperature

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

Junction ......................... +165 °C

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

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

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

conditions in typical applications.

ELECTRICAL SPECIFICATIONS

TA = TMIN to TMAX, VEE = 0 to +5 V, VDD = +5 V, fS = 117 kHz, fIN = 10 kHz, unless otherwise specified..

PARAMETER

TEST

CONDITIONS

TEST

LEVEL

DC ELECTRICAL CHARACTERISTICS

Resolution

VI

Linearity Error

Differential Linearity

TA= 0 to +70 °C

VI

No Missing Codes

VI

Unipolar Offset; 10 V, 20 V +25 °C Adjustable to Zero VI

Bipolar Offset; ±5 V, ±10 V +25 °C Adjustable to Zero VI

Full Scale Calibration Error1 +25 °C Adjustable to Zero VI

Full Scale Calibration Error1 No Adjustment to Zero

TA = 0 to +70 °C

V

Temperature Coefficients Using Internal Reference

Unipolar Offset

V

Bipolar Offset

V

Full Scale Calibration

V

Power Supply Rejection

Max change in full

VI

+4.75 V<VDD<+5.25 V

scale calibration

Analog Input Ranges

Bipolar

VI

VI

Unipolar

VI

VI

Input Impedance

10 Volt Span

VI

20 Volt Span

VI

SPT774C

MIN TYP MAX

12

±1

12

±2

±10

0.30

0.47

±1.0

±2.0

±12

±0.5

-5

+5

-10

+10

0

+10

0

+20

8.5

12

35

50

SPT774B

MIN TYP MAX UNITS

12 Bits

±0.5 LSB

12

Bits

±2 LSB

±4 LSB

0.30 % of FS

0.37

% of FS

±1.0

ppm/°C

±2.0

ppm/°C

±12

ppm/°C

±0.5 LSB

-5

+5 Volts

-10

+10 Volts

0

+10 Volts

0

+20 Volts

8.5

12

kΩ

35

50

kΩ

SPT

2

SPT774

8/1/00

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