1

RH129

6.9V Precision Reference

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

SUB-

SUB-

SYMBOL PARAMETER

CONDITIONS

NOTES

MIN

TYP

MAX

GROUP

MIN

TYP

MAX

GROUP

UNITS

Reverse Breakdown Voltage

6.7

7.2

1

V

Reverse Breakdown

14

mV

Voltage Change with Current

12

mV

Temperature Coefficient

10

2, 3

ppm/°C

Temp

RH129B

20

2, 3

ppm/°C

RH129C

50

2, 3

ppm/°C

Change in TC

1

ppm/°C

Dynamic Impedance

2

1

0.8

en

RMS Noise

10Hz f 10kHz

2

20

1

µV

Long Term Stability

Time

20

ppm/kHr

Reverse Breakdown Current ................................ 30mA

Forward Current..................................................... 2mA

Operating Temperature Range ............. – 55°C to 125°C

Storage Temperature Range ................. – 65

°C to 150°C

Lead Temperature (Soldering, 10 sec) .................. 300

°C

DESCRIPTIO

A

G

A

U

A

R

BSOLUTEXI

TI

S

The RH129 precision reference features excellent stability

over a wide range of voltage, temperature and operating

current conditions. The device achieves low dynamic

impedance by incorporating a high gain shunt regulator

around the Zener. The excellent noise performance of the

device is achieved by using a buried Zener design which

eliminates surface noise usually associated with ordinary

Zeners.

The wafer lots are processed to LTC's in-house Class S

flow to yield circuits usable in stringent military applica-

tions.

, LTC and LT are registered trademarks of Linear Technology Corporation.

BUR -I CIRCUIT

10k

20V

RH1009 BI

BOTTOM VIEW

2

1

H PACKAGE

2-LEAD TO-46 METAL CAN

TOTAL DOSE BIAS CIRCUIT

12.4k

15V

RH129 TDBC1