LTC1417IGN datasheet(5/32 Pages) LINER

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LTC1417

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

tH SCLK

SCLK High Time

(Note 9)

tL SCLK

SCLK Low Time

(Note 9)

tH EXTCLKIN

EXTCLKIN High Time

0.04

µs

tL EXTCLKIN

EXTCLKIN Low Time

0.04

µs

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: All voltage values are with respect to ground with DGND and

AGND wired together (unless otherwise noted).

Note 3: When these pin voltages are taken below VSS or above VDD, they

will be clamped by internal diodes. This product can handle input currents

greater than 100mA without latchup if the pin is driven below VSS (ground

for unipolar mode) or above VDD.

Note 4: When these pin voltages are taken below VSS they will be clamped

by internal diodes. This product can handle input currents greater than

100mA below VSS without latchup. These pins are not clamped to VDD.

Note 5: VDD = 5V, VSS = – 5V, fSAMPLE = 400kHz, tr = tf = 5ns unless

otherwise specified.

Note 6: Linearity, offset and full-scale specifications apply for a single-

ended AIN

+ input with AIN– grounded.

Note 7: Integral nonlinearity is defined as the deviation of a code from a

straight line passing through the actual endpoints of the transfer curve.

The deviation is measured from the center of the quantization band.

Note 8: Bipolar offset is the offset voltage measured from – 0.5LSB

when the output code flickers between 0000 0000 0000 00 and

1111 1111 1111 11.

Note 9: Guaranteed by design, not subject to test.

Note 10: Recommended operating conditions.

Note 11: The falling CONVST edge starts a conversion. If CONVST returns

high at a critical point during the conversion it can create small errors. For

best results ensure that CONVST returns high either within 625ns after

conversion start or after BUSY rises.

Note 12: Typical RMS noise at the code transitions. See Figure 2 for

histogram.

Note 13: t11 of 40ns maximum allows fSCLK up to 10MHz for rising

capture with 50% duty cycle. fSCLK up to 20MHz for falling capture with

5ns setup time.

TI I G CHARACTERISTICS The q indicates specifications which apply over the full operating temperature

range, otherwise specifications are at TA = 25°C. (Note 5)

TYPICAL PERFOR A CE CHARACTERISTICS

Typical INL Curve

Differential Nonlinearity

vs Output Code

S/(N + D) vs Input Frequency

and Amplitude

OUTPUT CODE

4096

–1.0

–0.5

0.5

1.0

8192

1417 G01

12288

16384

OUTPUT CODE

–1.0

– 0.5

0.5

1.0

4096

8192

1417 G02

12288

16384

(TA = 25°C)

INPUT FREQUENCY (Hz)

100k

1417 G03

10k

VIN = –60dB

VIN = 0dB

VIN = –20dB

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