LTC2248 datasheet(5/24 Pages) LINER

5 / 24 page

LTC2248/LTC2247/LTC2246

224876fa

TI I G CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature

range, otherwise specifications are at TA = 25°C. (Note 4)

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 VDD, they

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

of greater than 100mA below GND or above VDD without latchup.

Note 4: VDD = 3V, fSAMPLE = 65MHz (LTC2248), 40MHz (LTC2247), or

25MHz (LTC2246), input range = 2VP-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: VDD = 3V, fSAMPLE = 65MHz (LTC2248), 40MHz (LTC2247), or

25MHz (LTC2246), input range = 1VP-P with differential drive.

Note 9: Recommended operating conditions.

LTC2248

LTC2247

LTC2246

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

Sampling Frequency (Note 9)

●

165

140

125

MHz

CLK Low Time

Duty Cycle Stabilizer Off

●

7.3

7.7

500

11.8

12.5

500

18.9

500

Duty Cycle Stabilizer On

●

7.7

500

12.5

500

(Note 7)

CLK High Time

Duty Cycle Stabilizer Off

●

7.3

7.7

500

11.8

12.5

500

18.9

500

Duty Cycle Stabilizer On

●

7.7

500

12.5

500

(Note 7)

tAP

Sample-and-Hold

Aperture Delay

CLK to DATA delay

CL = 5pF (Note 7)

●

1.4

2.7

5.4

1.4

2.7

5.4

1.4

2.7

5.4

Data Access Time

CL = 5pF (Note 7)

●

4.3

After OE

↓

BUS Relinquish Time (Note 7)

●

3.3

8.5

3.3

8.5

3.3

8.5

Pipeline

Cycles

Latency

LTC2248: Typical DNL,

2V Range, 65Msps

LTC2248: Typical INL,

2V Range, 65Msps

CODE

12288

2248 G01

4096

8192

16384

2.0

1.5

1.0

0.5

–0.5

–1.0

–1.5

–2.0

CODE

12288

2248 G02

4096

8192

16384

1.00

0.75

0.50

0.25

–0.25

–0.50

–0.75

–1.00

TYPICAL PERFOR A CE CHARACTERISTICS

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