AD9057BRSZ-80 datasheet(3/12 Pages) AD

Part #	AD9057BRSZ-80

Description	8-Bit 40 MSPS/60 MSPS/80 MSPS A/D Converter

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REV. D

–3–

AD9057

Test

AD9057BRS-40

AD9057BRS-60

AD9057BRS-80

Parameter

Temp

Level

Min

Typ

Max

Min

Typ

Max

Min

Typ

Max

Unit

DIGITAL OUTPUTS

Logic 1 Voltage (VDD = 3 V)

Full

VI

2.95

V

Logic 1 Voltage (VDD = 5 V)

Full

IV

4.95

V

Logic 0 Voltage

Full

VI

0.05

V

Output Coding

Offset Binary Code

POWER SUPPLY

VD Supply Current (VD = 5 V)

Full

VI

36

48

38

48

40

51

mA

VDD Supply Current (VDD = 3 V)

4

Full

VI

4.0

6.5

5.5

6.5

7.4

8.8

mA

Power Dissipation

5, 6

Full

VI

192

260

205

260

220

281

mW

Power-Down Dissipation

Full

VI

6

10

6

10

6

10

mW

Power Supply Rejection Ratio

(PSRR)

25

∞CV

333

mV/V

NOTES

1Gain error and gain temperature coefficient are based on the ADC only (with a fixed 2.5 V external reference).

2t

V and tPD are measured from the 1.5 V level of the encode to the 10%/90% levels of the digital output swing. The digital output load during test is not to exceed

an ac load of 10 pF or a dc current of

±40 mA.

3SNR/harmonics based on an analog input voltage of –0.5 dBFS referenced to a 1.0 V full-scale input range.

4Digital supply current based on V

DD = 3 V output drive with <10 pF loading under dynamic test conditions.

5Power dissipation is based on specified encode and 10.3 MHz analog input dynamic test conditions (V

D = 5 V

± 5%, VDD = 3 V ± 5%).

6Typical thermal impedance for the RS style (SSOP) 20-lead package :

qJC = 46∞C/W, qCA = 80∞C/W, and qJA = 126∞C/W.

Specifications subject to change without notice.

N

N + 3

N + 1

N + 2

N + 4

N + 5

AIN

ENCODE

DIGITAL

OUTPUTS

tA

tEH

tEL

tV

tPD

N – 3

N – 2

N – 1

N

N + 1

N + 2

APERTURE DELAY

PULSEWIDTH HIGH

PULSEWIDTH LOW

OUTPUT VALID TIME

OUTPUT PROP DELAY

tA

tEH

tEL

tV

tPD

4.0 ns

2.7 ns

6.6 ns

9.5 ns

166 ns

MIN

TYP

MAX

Figure 1. Timing Diagram

EXPLANATION OF TEST LEVELS

Test Level

Description

I

100% production tested.

II

100% production tested at 25

∞C and sample

tested at specified temperatures.

III

Sample tested only.

IV

Parameter is guaranteed by design and charac-

terization testing.

VParameter is a typical value only.

VI

100% production tested at 25

∞C; guaranteed

by design and characterization testing

for industrial temperature range.

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