SPT7852SCT datasheet(3/11 Pages) FAIRCHILD

Part #	SPT7852SCT

Description	DUAL 10-BIT, 20 MSPS, 160 mW A/D CONVERTER

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

Direct Link	http://www.fairchildsemi.com

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SPT7852

ELECTRICAL SPECIFICATIONS

TA=TMIN to TMAX, AVDD = DVDD = +5.0 V, VIN =0 to 4 V, ƒS =20 MSPS, ƒCLK =40 MHz, VRHS = 4.0 V, VRLS =0.0 V, unless otherwise specified.

TEST

PARAMETERS

CONDITIONS

LEVEL

MIN

TYP

MAX

UNITS

Dynamic Performance

Signal-to-Noise Ratio

(without Harmonics)

ƒIN=3.58 MHz

VI

53

57

dB

ƒIN=10 MHz

VI

52

56

dB

Harmonic Distortion

ƒIN=3.58 MHz

VI

56

59

dB

ƒIN=10 MHz

VI

52

54

dB

Signal-to-Noise and Distortion

(SINAD)

ƒIN=3.58 MHz

VI

52

55

dB

ƒIN=10 MHz

VI

49

52

dB

Channel-to-Channel Crosstalk

ƒIN=3.58 MHz

IV

70

dB

Channel-to-Channel Gain Matching Full Scale

IV

0.04

dB

Spurious Free Dynamic Range

ƒIN=3.58 MHz @ –3 dB FS

V

66

dB

Differential Phase

V

0.2

Degree

Differential Gain

V

0.3

%

Digital Inputs

Logic "1" Voltage

VI

2.0

V

Logic "0" Voltage

VI

0.8

V

Maximum Input Current Low

VIL=0 V

VI

–10

+10

µA

Maximum Input Current High

VIH=5 V

VI

–10

+10

µA

Input Capacitance

V

5

pF

Digital Outputs

Logic "1" Voltage

IOH=0.5 mA

VI

OVDD–0.5

V

Logic "0" Voltage

IOS=1.6 mA

VI

0.4

V

tRISE/tFALL

15 pF Load

V

10

ns

Output Enable to Data Output Delay

20 pF Load, TA=+25 °C

V

10

ns

50 pF Load Over Temp.

V

22

ns

Power Supply Requirements

Voltages DVDD

IV

4.75

5.0

5.25

V

AVDD

IV

4.75

5.0

5.25

V

OVDD

IV

2.7

5.0

5.25

V

Currents AIDD

Total for Both Converter

VI

15

18

mA

DIDD

Channels

VI

17

20

mA

Power Dissipation

VI

160

190

mW

TEST LEVEL CODES

All electrical characteristics are subject to the follow-

ing conditions:

All parameters having min/max specifications are

guaranteed. The Test Level column indicates the

specific device testing actually performed during

production and Quality Assurance inspection. Any

blank section in the data column indicates that the

specification is not tested at the specified condition.

TEST PROCEDURE

100% production tested at the specified temperature.

100% production tested at TA=+25 °C, and sample tested at

the specified temperatures.

QA sample tested only at the specified temperatures.

Parameter is guaranteed (but not tested) by design and char-

acterization data.

Parameter is a typical value for information purposes only.

100% production tested at TA = +25 °C. Parameter is guaran-

teed over specified temperature range.

TEST LEVEL

I

II

III

IV

V

VI

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