SPT7922SCJ datasheet(3/11 Pages) ETC

Part #	SPT7922SCJ

Description	12-BIT, 30 MSPS, TTL, A/D CONVERTER

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SPT

3

3/10/97

SPT7922

ELECTRICAL SPECIFICATIONS

TA=TMIN to TMAX, VCC=+5.0 V, VEE=-5.2 V, DVCC=+5.0 V, VIN=±2.0 V, VSB=-2.0 V, VST=+2.0 V, fCLK=30 MHz, 50% clock duty cycle,

unless otherwise specified.

TEST

SPT7922

PARAMETERS

CONDITIONS

LEVEL

MIN

TYP

MAX

UNITS

Dynamic Performance

Harmonic Distortion

fIN=500 kHz

TA=+25 °C

I

63

65

dB

TA=TMIN to TMAX

IV

59

61

dB

fIN=1.0 MHz

TA=+25 °C

I

62

64

dB

TA=TMIN to TMAX

IV

58

60

dB

fIN=3.58 MHz

TA=+25 °C

I

59

61

dB

TA=TMIN to TMAX

IV

57

59

dB

Signal-to-Noise and Distortion

(SINAD)

fIN=500 kHz

TA=+25 °C

I

60

62

dB

TA=TMIN to TMAX

IV

55

57

dB

fIN=1.0 MHz

TA=+25 °C

I

59

61

dB

TA=TMIN to TMAX

IV

55

57

dB

fIN=3.58 MHz

TA=+25 °C

I

57

59

dB

TA=TMIN to TMAX

IV

54

56

dB

Spurious Free Dynamic Range1

TA=+25 °C

V

74

dB

Differential Phase2

TA=+25 °C

V

0.2

Degree

Differential Gain2

TA=+25

°C

V

0.7

%

Digital Inputs

fCLK=1 MHz

Logic 1 Voltage

TA=+25

°C

I

2.4

4.5

V

Logic 0 Voltage

TA=+25 °C

I

0.8

V

Maximum Input Current Low

TA=+25

°C

I

0

+5

+20

µA

Maximum Input Current High

TA=+25 °C

I

0

+5

+20

µA

Pulse Width Low (CLK)

IV

15

ns

Pulse Width High (CLK)

IV

15

300

ns

Digital Outputs

fCLK=1 MHz

Logic 1 Voltage

TA=+25

°C

I

2.4

V

Logic 0 Voltage

TA=+25 °C

I

0.6

V

Power Supply Requirements

Voltages

VCC

IV

4.75

5.0

5.25

V

DVCC

IV

4.75

5.0

5.25

V

-VEE

IV

-4.95

-5.2

-5.45

V

Currents

ICC

TA=+25 °C

I

135

150

mA

DICC

TA=+25 °C

I

40

55

mA

-IEE

TA=+25 °C

I

45

70

mA

Power Dissipation

VI

1.1

1.3

W

Power Supply Rejection

5 V

±0.25 V, -5.2 ±0.25 V

V

1.0

LSB

Typical thermal impedances (unsoldered, in free air):

32L sidebrazed DIP:

θja = +50 °C/W

44L cerquad:

θja = +78 °C/W

θja at 1 M/s airflow = +58 °C/W

θjc = +3.3 °C/W

1fIN = 1 MHz.

2fIN = 3.58 and 4.35 MHz.

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