SPT7720 datasheet(2/10 Pages) CADEKA

2 / 10 page

5/9/01

SPT7720

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

Temperatures

Operating Temperature .......................... –40 to +85 °C

Storage Temperature ............................ –65 to +125 °C

Supply Voltages

VDD ........................................................................ +6 V

Input Voltages

Analog Inputs ............................................... 0.0 to VDD

Digital Inputs ................................................ 0.0 to VDD

VREFL, VREFH ................................................ 0.0 to VDD

Note 1. Operation at any Absolute Maximum Rating is not implied. See

Electrical Specifications for proper nominal applied conditions in

typical applications.

ELECTRICAL SPECIFICATIONS

TA=TMIN to TMAX, VDD=+5.0 V, external reference, ƒS=200 MSPS, input amplitude = –1 dBFS, unless otherwise noted

TEST

SPT7720

PARAMETERS

CONDITIONS

LEVEL

MIN

TYP

MAX

UNITS

DC Accuracy

Differential Linearity Error (DLE)

+25 °C

±0.41

±0.75

LSB

–40 °C to +85 °C

±1.0

LSB

Integral Linearity Error (ILE)

+25 °C

±0.56

±1.0

LSB

–40 °C to +85 °C

±0.9

±1.2

LSB

No Missing Codes

Guaranteed

Gain Error

+25 °C

±1.06

±1.08

%FS

Gain Tempco

ppm/°C

Switching Performance

Encode Pulsewidth High

+25 °C

2.125

Encode Pulsewidth Low

+25 °C

2.125

Aperture Delay (tA)

+25 °C

0.57

Aperture Uncertainty (Jitter) & Noise

+25 °C

4.5

ps rms

Data Sync Setup Time (tSDS)

+25 °CIV

Data Sync Hold Time (tHDS)

+25 °C

0.5

Data Sync Pulsewidth Time (tPWDS)

+25 °C

2.0

Output Valid Time (tV)

4.4

5.7

Output Prop. Delay (tPD)

6.7

8.0

Dynamic Performance

Transient Response

+25 °C

1.5

Overvoltage Recovery Time

+25 °C

1.5

Signal-to-Noise Ratio (SNR)

(without harmonics)

ƒIN = 19.7 MHz

+25 °CV

ƒIN = 19.7 MHz

–40 °C to +85 °CV

ƒIN = 70.1 MHz

+25 °C

46.3

ƒIN = 70.1 MHz

–40 °C to +85 °C

45.8

Signal-to-Noise Ratio and Distortion

(SINAD)

ƒIN = 19.7 MHz

+25 °CV

ƒIN = 19.7 MHz

–40 °C to +85 °CV

ƒIN = 70.1 MHz

+25 °C

44.9

ƒIN = 70.1 MHz

–40 °C to +85 °C

44.5

2nd Harmonic Distortion

ƒIN = 19.7 MHz

+25 °CV

–59

dBc

ƒIN = 70.1 MHz

+25 °CV

–55.4

dBc

3rd Harmonic Distortion

ƒIN = 19.7 MHz

+25 °CV

–58

dBc

ƒIN = 70.1 MHz

+25 °CV

–56.4

dBc

Total Harmonic Distortion (THD)

ƒIN = 70.1 MHz

+25 °CI

–50.9

–46.0

dBc

ƒIN = 70.1 MHz

–40 to +85 °CV

–48.3

dBc

Effective Number of Bits (ENOB)

ƒIN = 70.1 MHz

+25 °C

6.9

7.16

Bits

ƒIN = 70.1 MHz

–40 to +85 °C

6.5

Bits

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