LTM9002 datasheet(11/28 Pages) LINER

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LTM9002

9002f

PIN FUNCTIONS

Supply Pins

GND (Pins A1-2, A5-7, B2-4, B6, C2-3, C6, D1-3, D5-7,

D9-10, E5-6, E9-10, F1-2, F5-7, F9-10, G2-3, G6, H2-4,

H6, J1-2, J5-7): ADC Power Ground.

OGND (Pins A12, C9, G9, J12): Output Driver Ground.

OVDD (Pins B12, H12): Positive supply for the ADC output

drivers. The speciﬁed operating range is 0.5V to 3.6V. OVDD

is internally bypassed to OGND.

VCC (Pins E3, E4): Ampliﬁer and Auxiliary DAC Power Sup-

ply. The speciﬁed operating range is 2.85V to 3.465V. The

voltage on this pin provides power for the ampliﬁer stage

and auxiliary DACs only and is internally bypassed to GND.

Note that LTM9002-LA does not have auxiliary DACs.

VDD (PinsE7,E8):Analog3VSupplyforADC.Thespeciﬁed

operating range is 2.7V to 3.6V. VDD is internally bypassed

to GND.

Analog Inputs

CLKA (Pin A3): Channel A ADC Clock Input. The input

sample starts on the positive edge.

CLKB (Pin A4): Channel B ADC Clock Input. The input

sample starts on the positive edge.

DNC1 (Pin H5): Do Not Connect. These pins are used for

testing and should not be connected on the PCB. They

should be soldered to unconnected pads and should be

well isolated. The DNC pins connect to the signal path

prior to the ADC inputs; therefore, care should be taken

to keep other signals away from these sensitive nodes.

DNC1 connects near the channel A positive differential

analog input.

DNC2 (Pin G5): Do Not Connect. These pins are used for

testing and should not be connected on the PCB. They

should be soldered to unconnected pads and should be

well isolated. The DNC pins connect to the signal path

prior to the ADC inputs; therefore, care should be taken

to keep other signals away from these sensitive nodes.

DNC2 connects near the channel A negative differential

analog input.

DNC3 (Pin C5): Do Not Connect. These pins are used for

testing and should not be connected on the PCB. They

should be soldered to unconnected pads and should be

well isolated. The DNC pins connect to the signal path

prior to the ADC inputs; therefore, care should be taken

to keep other signals away from these sensitive nodes.

DNC3 connects near the channel B positive differential

analog input.

DNC4 (Pin B5): Do Not Connect. These pins are used for

testing and should not be connected on the PCB. They

should be soldered to unconnected pads and should be

well isolated. The DNC pins connect to the signal path

prior to the ADC inputs; therefore, care should be taken

to keep other signals away from these sensitive nodes.

DNC4 connects near the channel B negative differential

analog input.

DNC5 (Pin G4): Do Not Connect. This pin is used for test-

ing and should not be connected on the PCB. It should

be soldered to an unconnected pad and should be well

isolated. This is a test point for the auxiliary DAC channel A

voltage output.

DNC6 (Pin C4): Do Not Connect. This pin is used for test-

ing and should not be connected on the PCB. It should

be soldered to an unconnected pad and should be well

isolated. This is a test point for the auxiliary DAC channel B

voltage output.

INA– (Pin G1):

Channel A Negative (Inverting) Ampliﬁer

Input.

INA+ (Pin H1):

Channel A Positive (Noninverting) Am-

pliﬁer Input.

INB– (Pin C1):

Channel B Negative (Inverting) Ampliﬁer

Input.

INB+ (Pin B1):

Channel B Positive (Noninverting) Am-

pliﬁer Input.

LTM9002 Datasheet(PDF) 11 Page - Linear Technology

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