LTC1043CSW datasheet(4/16 Pages) LINER

4 / 16 page

LTC1043

1043fa

Oscillator Frequency, fOSC

vs Ambient Temperature, TA

(Test Circuits 2 through 4)

TYPICAL PERFOR A CE CHARACTERISTICS

Break-Before-Make Time, tNOV,

vs Supply Voltage

COSC Pin ISINK, ISOURCE

vs Supply Voltage

AMBIENT TEMPERATURE (°C)

–50

100

125

175

200

225

350

275

LTC1043 • TPC10

150

300

325

250

–25

100

125

COSC = 0pF

V+ = 10V, V– = 0V

V+ = 5V, V– = 0V

V+ = 15V, V– = 0V

100

246

LTC1043 • TPC11

ISINK, TA = 25°C

ISOURCE, TA = –55°C

ISOURCE, TA = 25°C

ISINK, TA = 125°C

ISOURCE, TA = 125°C

ISINK, TA = –55°C

VSUPPLY (V)

LTC1043 • TPC12

18 20

TA = 25°C

BLOCK DIAGRA

LTC1043 • BD01

–

SHB

V+

THE SWITCHES ARE TIMED AS SHOWN WITH PIN 16 HIGH

THE CHARGE BALANCING CIRCUITRY SAMPLES THE VOLTAGE

AT S3 WITH RESPECT TO S4 (PIN 16 HIGH) AND INJECTS A

SMALL CHARGE AT THE C+ PIN (PIN 16 LOW).

THIS BOOSTS THE CMRR WHEN THE LTC1043 IS USED AS AN

INSTRUMENTATION AMPLIFIER FRONT END.

FOR MINIMUM CHARGE INJECTION IN OTHER TYPES OF

APPLICATIONS, S3A AND S3B SHOULD BE GROUNDED

V–

CHARGE

BALANCING

CIRCUITRY

NON-OVERLAPPING

CLOCK

OSCILLATOR

CHARGE

BALANCING

CIRCUITRY

–

SHA

COSC

S1A

S4A

S1B

S2B

S4B

V+

V–

S2A

S3B

S3A

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