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LTC1744

1744f

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

fSAMPLE(MAX)

Maximum Sampling Frequency

MHz

ENC Low Time

(Note 9)

9.5

1000

ENC High Time

(Note 9)

9.5

1000

Aperture Delay of Sample-and-Hold

ENC to Data Delay

CL = 10pF (Note 8)

1.4

4.5

ENC to CLKOUT Delay

CL = 10pF (Note 8)

0.5

2.3

CLKOUT to Data Delay

CL = 10pF (Note 8)

2.2

DATA Access Time After OE

↓

CL = 10pF (Note 8)

BUS Relinquish Time

(Note 8)

Data Latency

cycles

The q indicates specifications which apply over the full operating temperature

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

TI I G CHARACTERISTICS

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 GND

(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: When these pin voltages are taken below GND, they will be

clamped by internal diodes. This product can handle input currents of

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

Note 5: VDD = 5V, fSAMPLE = 50MHz, differential ENC/ENC = 2VP-P 50MHz

sine wave, input range =

±1.6V differential, unless otherwise specified.

Note 6: 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 7: Bipolar offset 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 8: Guaranteed by design, not subject to test.

Note 9: Recommended operating conditions.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VDD

Positive Supply Voltage

4.75

5.25

IDD

Positive Supply Current

245

300

PDIS

Power Dissipation

1.2

1.5

OVDD

Digital Output Supply Voltage

0.5

VDD

The q indicates specifications which apply over the full operating temperature

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

POWER REQUIRE E TS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIH

High Level Input Voltage

VDD = 5.25V

2.4

VIL

Low Level Input Voltage

VDD = 4.75V

0.8

IIN

Digital Input Current

VIN = 0V to VDD

±10

µA

CIN

Digital Input Capacitance

MSBINV and OE Only

1.5

VOH

High Level Output Voltage

OVDD = 4.75V

IO = –10µA

4.74

IO = – 200µA

VOL

Low Level Output Voltage

OVDD = 4.75V

IO = 160µA

0.05

IO = 1.6mA

0.1

0.4

IOZ

Hi-Z Output Leakage D13 to D0

VOUT = 0V to VDD, OE = High

±10

µA

COZ

Hi-Z Output Capacitance D13 to D0

OE = High (Note 8)

ISOURCE

Output Source Current

VOUT = 0V

– 50

ISINK

Output Sink Current

VOUT = 5V

The q indicates specifications which apply over the full

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

DIGITAL I PUTS A D DIGITAL OUTPUTS

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