AD9516-2SLASHPCBZ datasheet(17/84 Pages) AD

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AD9516-2

Rev. 0 | Page 17 of 84

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

PIN 1

INDICATOR

REFMON

VCP

STATUS

REF_SEL

SYNC

BYPASS

CLK

SCLK

NC = NO CONNECT

OUT6 (OUT6A)

OUT6 (OUT6B)

OUT7 (OUT7A)

OUT7 (OUT7B)

GND

OUT2

VS_LVPECL

OUT3

GND

OUT9 (OUT9B)

OUT9 (OUT9A)

OUT8 (OUT8B)

OUT8 (OUT8A)

AD9516-2

TOP VIEW

(Not to Scale)

LVPECL LVPECL

Figure 6. Pin Configuration

Table 20. Pin Function Descriptions

Pin No.

Mnemonic

Description

1, 11, 12, 30, 31,

32, 38, 49, 50, 51,

57, 60, 61

3.3 V Power Pins.

REFMON

Reference Monitor (Output). This pin has multiple selectable outputs; see Table 53 0x1B.

Lock Detect (Output). This pin has multiple selectable outputs; see Table 53 0x1A.

VCP

Power Supply for Charge Pump (CP); VS < VCP < 5.0 V.

Charge Pump (Output). Connects to external loop filter.

STATUS

Status (Output). This pin has multiple selectable outputs; see Table 53 0x17.

REF_SEL

Reference Select. Selects REF1 (low) or REF2 (high). This pin has an internal 30 kΩ pull-down resistor.

SYNC

Manual Synchronizations and Manual Holdover. This pin initiates a manual synchronization and is also

used for manual holdover. Active low. This pin has an internal 30 kΩ pull-up resistor.

Loop Filter (Input). Connects to VCO control voltage node internally.

BYPASS

This pin is for bypassing the LDO to ground with a capacitor.

CLK

Along with CLK, this is the differential input for the clock distribution section.

CLK

Along with CLK, this is the differential input for the clock distribution section.

15, 18, 19, 20

No Connection.

SCLK

Serial Control Port Data Clock Signal.

Serial Control Port Chip Select; Active Low. This pin has an internal 30 kΩ pull-up resistor.

SDO

Serial Control Port Unidirectional Serial Data Out.

SDIO

Serial Control Port Bidirectional Serial Data In/Out.

RESET

Chip Reset; Active Low. This pin has an internal 30 kΩ pull-up resistor.

Chip Power Down; Active Low. This pin has an internal 30 kΩ pull-up resistor.

27, 41, 54

VS_LVPECL

Extended Voltage 2.5 V to 3.3 V LVPECL Power Pins.

37, 44, 59, EPAD

GND

Ground Pins; Includes External Paddle (EPAD).

OUT0

LVPECL Output; One Side of a Differential LVPECL Output.

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