ADS5482 datasheet(9/42 Pages) TI

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ADS5481

ADS5482

ADS5483

www.ti.com................................................................................................................................................... SLAS565A – JUNE 2008 – REVISED NOVEMBER 2008

Table 1. TERMINAL FUNCTIONS

TERMINAL

DESCRIPTION

NAME

NO.

1, 2, 8, 14, 18,

AVDD5

5V analog supply

24, 27, 30

9, 15, 19, 25,

AVDD3

3.3V analog supply

28, 31

3, 7, 10, 13, 17,

AGND

20, 23, 26, 29,

Analog ground

DVDD3

42, 52, 63

3.3V digital supply

DGND

41, 51, 64

Digital ground

5, 6, 37-40

No connects - leave floating

INP, INM

11, 12

Differential analog inputs (P = plus = true, M = minus = complement)

CLKM, CLKP

21, 22

Differential clock inputs (P = plus = true, M = minus = complement)

Reference voltage input/output (1.2V nominal). To use an external reference and to turn the internal

REF

reference off, pull both PDWNF and PDWNS to logic high (DVDD3).

Analog input common mode, output (3.1V), for use in applications that require use of the internally

VCM

generated common-mode. See the applications section for more information on using VCM.

External bias resistor for LVDS bias current, normally 10k

Ω to GND to provide nominal 3.5mA LVDS

LVDSB

current

Light sleep power down, fast wakeup, logic high (DVDD3) = light sleep enabled (bandgap reference

PDWNF

remains on)

Deep sleep power down, slow wakeup, logic high (DVDD3) = deep sleep enabled (bandgap reference is

PDWNS

off)

DITHER

Dither enable, logic high (DVDD3) = dither enabled

DRY_P,

54, 53

Dataready signal (LVDS clockout) (P = plus = true, M = minus = complement)

DRY_M

D14_15_P,

62, 61

DDR LVDS output bits 14 then 15 (15 is MSB) (P = plus = true, M = minus = complement)

D14_15_M

DE_O_P,

43-50, 55-62

DDR LVDS output bits E (even) then O (odd) (P = plus = true, M = minus = complement)

DE_O_M

D0_1_P,

44, 43

DDR LVDS output bits 0 then 1 (0 is LSB) (P = plus = true, M = minus = complement)

D0_1_M

PowerPAD

Analog ground (exposed pad on bottom of package)

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