LTC2250 datasheet(5/24 Pages) LINER

5 / 24 page

LTC2251/LTC2250

22510fa

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 = 125MHz (LTC2251) or 105MHz (LTC2250),

input range = 2VP-P with differential drive, clock duty cycle stabilizer on,

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 and 11 1111 1111.

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

Note 8: VDD = 3V, fSAMPLE = 125MHz (LTC2251) or 105MHz (LTC2250),

input range = 1VP-P with differential drive.

Note 9: Recommended operating conditions.

LTC2251

LTC2250

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

Sampling Frequency

(Note 9)

●

125

105

MHz

CLK Low Time

Duty Cycle Stabilizer Off

●

3.8

500

4.5

4.76

500

Duty Cycle Stabilizer On

●

500

4.76

500

(Note 7)

CLK High Time

Duty Cycle Stabilizer Off

●

3.8

500

4.5

4.76

500

Duty Cycle Stabilizer On

●

500

4.76

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

Data Access Time

CL = 5pF (Note 7)

●

4.3

After OE

↓

BUS Relinquish Time

(Note 7)

●

3.3

8.5

3.3

8.5

Pipeline

Cycles

Latency

POWER REQUIRE E TS The ● denotes the specifications which apply over the full operating temperature

range, otherwise specifications are at TA = 25°C. (Note 8)

LTC2251

LTC2250

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

VDD

Analog Supply

(Note 9)

●

2.85

3.4

2.85

3.4

Voltage

OVDD

Output Supply

(Note 9)

●

0.5

3.6

0.5

3.6

Voltage

IVDD

Supply Current

●

132

156

107

126

PDISS

Power Dissipation

●

395

468

320

378

PSHDN

Shutdown Power

SHDN = H,

OE = H, No CLK

PNAP

Nap Mode Power

SHDN = H,

OE = L, No CLK

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