LTC1409CSW datasheet(6/20 Pages) LINER

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LTC1409

TYPICAL PERFORMANCE CHARACTERISTICS

Input Common Mode Rejection vs

Input Frequency

Power Supply Feedthrough vs

Ripple Frequency

RIPPLE FREQUENCY (Hz)

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

100k

10M

LTC1409 • TPC08

10k

VSS

VDD

DGND

INPUT FREQUENCY (Hz)

10k

100k

LT1409 • TPC09

10M

D3 to D0 (Pins 15 to 18): Three-State Data Outputs.

OGND (Pin 19): Digital Ground for Output Drivers. Tie

to AGND.

NAP/SLP (Pin 20): Power Shutdown Mode. Selects the

mode invoked by the SHDN pin. Low selects Sleep

mode and high selects quick wake-up Nap mode.

SHDN (Pin 21): Power Shutdown Input. A low logic

level will invoke the Shutdown mode selected by the

NAP/SLP pin.

RD (Pin 22): Read Input. This enables the output

drivers when CS is low.

PI FU CTIO S

+AIN (Pin 1): Positive Analog Input, ±2.5V.

–AIN (Pin 2): Negative Analog Input, ±2.5V.

VREF (Pin 3): 2.50V Reference Output.

REFCOMP (Pin 4): 4.06V Reference Output. Bypass to

AGND using 10

µF tantalum in parallel with 0.1µF or

µF ceramic.

AGND (Pin 5): Analog Ground.

D11 to D4 (Pins 6 to 13): Three-State Data Outputs.

DGND (Pin 14): Digital Ground for Internal Logic. Tie to

AGND.

Integral Nonlinearity vs

Output Code

OUTPUT CODE

1.00

0.50

–0.50

–1.00

512 1024 1536 2048

LT1409 • TPC07

2560 3072 3584 4096

Differential Nonlinearity vs

Output Code

OUTPUT CODE

1.00

0.50

–0.50

–1.00

512 1024 1536 2048

LT1409 • TPC06

2560 3072 3584 4096

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