236AC1 Просмотр технического описания (PDF) - Linear Technology

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236AC1

Precision Reference

Linear Technology 

TYPICAL APPLICATIONS

Boosted Output Current

with No Current Limit

V+ ≥ (VOUT + 1.8V)

R1

220Ω

2N2905

IN

LT1236

OUT

GND

10V AT

100mA

+ 2µF

SOLID

TANT

Boosted Output Current

with Current Limit

V+ ≥ VOUT + 2.8V

D1* R1

LED 220Ω

8.2Ω

IN

LT1236

OUT

GND

2N2905

10V AT

100mA

+ 2µF

SOLID

TANT

LT1236 TA05

*GLOWS IN CURRENT LIMIT,

DO NOT OMIT

LT1236 TA06

LT1236

±10V Output Reference

LT1236-10

15V VIN

VOUT

+10V

GND

COM

LT1236-10

V IN

VOUT

GND

R1 = –15V –10V

ILOAD + 1.5mA

R1

–15V

ILOAD

–10V

LT1236 TA17

Handling Higher Load Currents

15V 30mA

IN

LT1236-10

OUT

GND

R1*

169Ω

VOUT

10V

RL

TYPICAL LOAD

CURRENT = 30mA

Operating 5V Reference from 5V Supply

CMOS LOGIC GATE**

fIN ≥ 2kHz*

+

C1*

5µF

1N914

1N914

≈ 8.5V

+ C2*

5µF

LT1236-5

IN

OUT

GND

5V LOGIC

SUPPLY

5V

REFERENCE

*FOR HIGHER FREQUENCIES C1 AND C2 MAY BE DECREASED

**PARALLEL GATES FOR HIGHER REFERENCE CURRENT LOADING

LT1236 TA15

*SELECT R1 TO DELIVER TYPICAL LOAD CURRENT.

LT1236 WILL THEN SOURCE OR SINK AS NECESSARY

TO MAINTAIN PROPER OUTPUT. DO NOT REMOVE LOAD

AS OUTPUT WILL BE DRIVEN UNREGULATED HIGH. LINE

REGULATION IS DEGRADED IN THIS APPLICATION

LT1236 TA07

CMOS DAC with Low Drift Full-Scale Trimming**

Trimming 10V Units to 10.24V

OUT

LT1236-10

TRIM

GND

R1

4.99k

1%

R2

40.2Ω

1%

FB

CMOS

DAC

IOUT

LTC7543

REF

R3

4.02K

1%

30pF

–

LT1007C

+

R4*

100Ω

FULL-SCALE

ADJUST

10V

F.S.

LT1236-10

VIN IN

OUT

TRIM GND

VOUT = 10.24V

4.32k

5k

V – = –15V*

1.2k

–15V

*TC LESS THAN 200ppm/°C

**NO ZERO ADJUST REQUIRED

WITH LT1007 (V0S ≤ 60µV)

LT1236 TA14

*MUST BE WELL REGULATED

dVOUT

dV –

=

15mV

V

LT1236 TA11

9

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