
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.
T
A
= 25°C
TYP
SUB-
GROUP
1
SUB-
GROUP
SYMBOL PARAMETER
V
Z
Reverse Breakdown Voltage
V
Z
Reverse Breakdown
I
R
Voltage Change with Current
V
Z
Temperature Coefficient
Temp
CONDITIONS
0.6mA I
R
15mA
0.6mA I
R
15mA
1mA I
R
15mA
I
R
= 1mA,
NOTES
MIN
6.7
MAX
7.2
14
MIN
TYP
MAX
UNITS
V
mV
mV
12
RH129A
RH129B
RH129C
10
20
50
2, 3
2, 3
2, 3
ppm/°C
ppm/°C
ppm/°C
ppm/°C
Change in TC
Dynamic Impedance
1mA I
R
15mA
I
R
= 1mA
1mA I
R
15mA
10Hz f 10kHz
T
A
= 25°C±0.1°C,
I
R
= 1mA ±0.3%
1
r
Z
2
1
2
0.8
en
V
Z
Time
RMS Noise
Long Term Stability
20
1
μV
20
ppm/kHr
TABLE 1: ELECTRICAL CHARACTERISTICS
(Preirradiation)
–55°C T
A
125°C
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
D
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.
U
ESCRIPTIO
A
U
G
W
A
W
U
W
A
R
BSOLUTE
XI
TI
S
, LTC and LT are registered trademarks of Linear Technology Corporation.
BURU
U
10k
20V
RH1009 BI
PACKAGE I
N
FOR
ATIO
U
W
BOTTOM VIEW
2
1
H PACKAGE
2-LEAD TO-46 METAL CAN
TOTAL DOSE BIAS CIRCUIT
12.4k
15V
RH129 TDBC1