LM12434 datasheet(8/80 Pages) NSC

8 / 80 page

20 Electrical Specifications (Continued)

222 Converter Dynamic Characteristics

The following specifications apply only to the LM12434 and LM12438 for VAa e

VDa e 5V AGND e DGND e 0V VREFa e 4096V VREFb e 0V 12-bit a sign conversion mode fCLK e 80 MHz

throughput rate e 1333 kHz RS e 25X source impedance for VREFa and VREFb s 25X fully-differential input with fixed

2048V common-mode voltage and minimum acquisition time unless otherwise specified Boldface limits apply for TA e

TJ e TMIN to TMAX all other limits TA e TJ e 25 C (Notes 6 7 8 and 9) (Continued)

Symbol

Parameter

Conditions

Typical

Limits

Units

(Note 10)

(Note 11)

(Limit)

IMD

Two Tone Intermodulation Distortion

VIN e g4096V (Note 20)

Differential Input

f1 e 19190 kHz

dBc

f2 e 19482 kHz

IMD

Two Tone Intermodulation Distortion

VIN e 4096 Vpp

Single Ended Input

f1 e 19190 kHz

dBc

f2 e 19482 kHz

Multiplexer Channel-to-Channel Crosstalk

VIN e 4096 VPP

fIN e 5 kHz

fCROSSTALK e 40 kHz

dBc

LM12434 MUXOUT Only

and LM12438 MUX

plus Converter (Note 21)

tPU

Power-Up Time

tWU

Wake-Up Time

(Note 22)

223 DC Characteristics

The following specifications apply to the LM12434 and LM12 L 438 for VAa e VDa e 5V 33V

AGND e DGND e 0V VREFa e 4096V 25V VREFb e 0V fCLK e 80 MHz 6 MHz and minimum acquisition time unless

otherwise specified Boldface limits apply for TA e TJ e TMIN to TMAX all other limits TA e TJ e 25 C (Notes 6 7

and 8)

Symbol

Parameter

Conditions

Typical

Limits

Units

(Note 10)

(Note 11)

(Limit)

IDa

VDa Supply Current

fCLK e 8 MHz 6 MHz

fSCLK e Stopped

20 14

mA (max)

fSCLK e 10 MHz 8 MHz

40 20

50 25

mA (max)

IAa

VAa Supply Current

fCLK e 8 MHz 6 MHz

28 22

40 35

mA (max)

IST

Stand-By Supply Current (IDa a IAa)

Stand-By Mode Selected

fSCLK e Stopped

fCLK e Stopped

5 5

A (max)

fCLK e 8 MHz 6 MHz

120 50

A (max)

fSCLK e 10 MHz 8 MHz

fCLK e Stopped

14 08

mA (max)

fCLK e 8 MHz 6 MHz

14 08

mA (max)

Multiplexer ON-Channel Leakage Current

VAa e 55V

ON-Channel e 55V

OFF-Channel e 0V

10 30

A (max)

ON-Channel e 0V

OFF-Channel e 55V

10 30

A (max)

Multiplexer OFF-Channel Leakage Current

VAa e 55V 33V

ON-Channel e 55V 33V

OFF-Channel e 0V

10 30

A (max)

ON-Channel e 0V

OFF-Channel e 55V 33V

10 30

A (max)

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