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LTC1603IG

High Speed, 16-Bit, 250ksps Sampling A/D Converter with Shutdown

Linear Technology 

WU

TI I G CHARACTERISTICS (Note 5)

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, OGND

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 below VSS or above VDD without latchup.

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, fSMPL = 250kHz, and tr = tf = 5ns unless

otherwise specified.

Note 6: Linearity, offset and full-scale specification 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.

LTC1603

Note 8: Typical RMS noise at the code transitions. See Figure 17 for

histogram.

Note 9: Bipolar offset is the offset voltage measured from – 0.5LSB when

the output code flickers between 0000 0000 0000 0000 and 1111 1111

1111 1111.

Note 10: Signal-to-Noise Ratio (SNR) is measured at 5kHz and distortion

is measured at 100kHz. These results are used to calculate Signal-to-Nosie

Plus Distortion (SINAD).

Note 11: Guaranteed by design, not subject to test.

Note 12: Recommended operating conditions.

Note 13: 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 performance ensure that CONVST returns high either within 250ns

after conversion start or after BUSY rises.

TYPICAL PERFORMANCE CHARACTERISTICS

Integral Nonlinearity vs

Output Code

2.0

1.5

1.0

0.5

0.0

–0.5

–1.0

–1.5

–2.0

–32768

–16384

0

CODE

16384 32767

1603 G11

Differential Nonlinearity vs

Output Code

1.0

0.8

0.6

0.4

0.2

0.0

–0.2

–0.4

–0.6

–0.8

–1.0

–32768 –16384

0

16384 32767

CODE

1603 G10

1603f

5

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