ADS58C28 datasheet(4/68 Pages) TI1

No. de pieza	ADS58C28

Descripción Electrónicos	Dual Channel IF Receiver with SNRBoost3G

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Fabricante Electrónico	TI1 [Texas Instruments]

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ADS58C28

SBAS509B – JUNE 2010 – REVISED OCTOBER 2010

www.ti.com

RECOMMENDED OPERATING CONDITIONS

Over operating free-air temperature range, unless otherwise noted.

MIN

NOM

MAX

UNIT

SUPPLIES

Analog supply voltage, AVDD

1.75

1.8

1.9

V

Digital supply voltage, DRVDD

1.7

1.8

1.9

V

ANALOG INPUTS

Default, SNRBoost3G disabled

2

VPP

Differential input voltage range

SNRBoost3G enabled

1.6

VPP

Input common-mode voltage

VCM(1) ± 0.05

V

Maximum analog input frequency with 2VPP input amplitude

(2)

400

MHz

Maximum analog input frequency with 1VPP input amplitude

(2)

600

MHz

CLOCK INPUT

Default after reset LOW SPEED mode disabled

> 80

200

Input clock sample rate(3)

MSPS

LOW SPEED mode enabled

1

80

Sine wave, ac-coupled

0.2

1.5

VPP

LVPECL, ac-coupled

1.6

VPP

Input clock amplitude differential

(VCLKP – VCLKM)

LVDS, ac-coupled

0.7

VPP

LVCMOS, single-ended, ac-coupled

1.8

V

Input clock duty cycle

Default after reset LOW SPEED mode disabled

35

50

65

%

LOW SPEED mode enabled

40

50

60

%

DIGITAL OUTPUTS

Maximum external load capacitance from each output pin to DRGND, CLOAD

10

pF

Differential load resistance between the LVDS output pairs (LVDS mode), RLOAD

100

Ω

HIGH-PERFORMANCE MODES(4)(5)

Set this register bit to get best performance across Register address = 03h,

High-performance mode

sample clock and input signal frequencies

data = 03h

Register address = 4Ah,

data = 01h

Set these register bits for high input signal

High-frequency mode

frequencies (> 200MHz)

Register address = 58h,

data = 01h

Operating free-air temperature, TA

–40

+85

°C

(1)

VCM, typically 0.95V, is the voltage measured on the VCM pin when the input clock is switched off.

(2)

See the Theory of Operation section in the Application Information

(3)

See description for LOW SPEED mode in the Serial Interface Configuration section.

(4)

It is recommended to use these modes to obtain best performance.

(5)

See the Serial Interface Configuration section for details on register programming.

4

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