ADC PWR-AVIS Manual de usuario descargar pdf (Pagina 5)

LTC2245

2245fa

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

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

wired together (unless otherwise noted).

Note 3: When these pin voltages are taken below GND or above V

, they

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

of greater than 100mA below GND or above V

without latchup.

Note 4: V

= 3V, f

SAMPLE

= 10MHz, input range = 2V

P-P

with differential

drive, unless otherwise noted.

Note 5: 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 6: Offset error is the offset voltage measured from –0.5 LSB when

the output code flickers between 00 0000 0000 0000 and

11 1111 1111 1111.

Note 7: Guaranteed by design, not subject to test.

Note 8: V

= 3V, f

SAMPLE

= 10MHz, input range = 1V

P-P

with

differential drive.

Note 9: Recommended operating conditions.

TI I G CHARACTERISTICS

The ● denotes the specifications which apply over the full operating temperature

range, otherwise specifications are at T

= 25°C. (Note 4)

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

Sampling Frequency (Note 9) ● 1 10 MHz

CLK Low Time Duty Cycle Stabilizer Off ● 40 50 500 ns

Duty Cycle Stabilizer On

● 5 50 500 ns

(Note 7)

CLK High Time Duty Cycle Stabilizer Off ● 40 50 500 ns

Duty Cycle Stabilizer On

● 5 50 500 ns

(Note 7)

Sample-and-Hold Aperture Delay 0ns

CLK to DATA delay C

= 5pF (Note 7) ● 1.4 2.7 5.4 ns

Data Access Time After OE↓ C

= 5pF (Note 7) ● 4.3 10 ns

BUS Relinquish Time (Note 7) ● 3.3 8.5 ns

Pipeline 5 Cycles

Latency

Typical DNL, 2V RangeTypical INL, 2V Range

8192 Point FFT, f

= 5.1MHz,

–1dB, 2V Range

TYPICAL PERFOR A CE CHARACTERISTICS

CODE

–2.0

INL ERROR (LSB)

–1.0

–0.5

2.0

1.0

4096

8192

2245 G01

–1.5

1.5

0.5

12288

16384

CODE

–1.0

DNL ERROR (LSB)

–0.8

–0.4

–0.2

1.0

0.4

4096

8192

2245 G02

–0.6

0.6

0.8

0.2

12288

16384

FREQUENCY (MHz)

AMPLITUDE (dB)

–60

–40

–20

2245 G03

–80

–100

–70

–50

–30

–10

–90

–110

–120

1 2 3 4 5 6 7 8 9 10 ... 19 20

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ADC PWR-AVIS Manual de usuario Pagina 5

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