LTC2000_15 datasheet(17/52 Pages) LINER

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LTC2000

2000f

For more information www.linear.com/LTC2000

pin Functions

Block Diagram

4:1

TSTP/N

SCK SDI

SDO

SVDD

IOUTP

IOUTN

FSADJ

REFIO

10k

2000 BD

CKP/N

GND

DVDD33

DVDD18

AVDD33

AVDD18

GAIN

ADJUST

CLOCK

SYNC

CLK

RECEIVER

DELAY

ADJUST

DCKOP/N

DCKIP/N

DBP/N[15:0]

DAP/N[15:0]

CLK DIVIDER

÷2 OR ÷4

REF

SPI

PATTERN

GENERATOR

JUNCTION

TEMPERATURE

16-BIT DAC

REFIO: Reference Voltage Input or Output. The 1.25V

internal reference is available at the pin through a 10k

internal resistor. May be overdriven with an external refer-

ence voltage between 1.1V and 1.4V.

SCK: Serial Interface Clock Input. Maximum frequency

is 50MHz.

SDI: Serial Interface Data Input. Data on SDI is clocked

in on the rising edge of SCK.

SDO: SerialInterfaceDataOutput. Dataisclockedout onto

SDO by the falling edge of SCK. SDO is high impedance

when CS is high.

SVDD: SPI Supply Voltage Input. 1.71V to 3.465V.

TSTP, TSTN: Test Output Pins. May be optionally used to

measure internal temperature or timing of LVDS inputs.

See Measuring Internal Junction Temperature and Mea-

suring LVDS Input Timing Skew sections in Applications

Information. Use SPI internal registers 0x18 and 0x19 to

control TSTP/N. Connect to GND if not used.

Note: For pin locations, refer to the Pin Locations section

of this data sheet.

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