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Linear Technology Electronic Components Datasheet

RH1021-7 Datasheet

Precision 7V Reference

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RH1021-7
Precision 7V Reference
DESCRIPTION
The RH1021-7 is a precision 7V reference with ultralow
drift and noise, extremely good long-term stability and
almost total immunity to input voltage variations. The
reference output will source and sink up to 10mA. This
reference can also be used as a shunt regulator
(2-terminal Zener). Unique circuit design makes the
RH1021-7 the first IC reference to offer ultralow drift
without the use of high power on-chip heaters.
The wafer lots are processed to Linear Technology’s in-
house Class S flow to yield circuits usable in stringent
military applications.
ABSOLUTE MAXIMUM RATINGS
Input Voltage ........................................................... 40V
Input/Output Voltage Differential ............................. 35V
Output to Ground Voltage
(Shunt Mode Current Limit) ............................... 10V
Output Short-Circuit Duration
VIN = 35V ........................................................ 10 sec
VIN 20V ................................................... Indefinite
Operating Temperature Range .............. – 55°C to 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
, LTC and LT are registered trademarks of Linear Technology Corporation.
BUR -I CIRCUIT
8
1
7
20V 2 RH1021-7 6
3
4
5
–20V
PACKAGE/ORDER INFORMATION
TOP VIEW
NC*
NC* 1
8
7 NC*
VIN 2
6 VOUT
NC* 3
5 NC*
4
GND
H PACKAGE
8-LEAD TO-5 METAL CAN
* Connected internally. Do not connect external
circuitry to these pins.
1


Linear Technology Electronic Components Datasheet

RH1021-7 Datasheet

Precision 7V Reference

No Preview Available !

RH1021-7
TABLE 1: ELECTRICAL CHARACTERISTICS (Preirradiation) (Note 9)
SYMBOL PARAMETER
CONDITIONS
VOUT
TCVOUT
Output Voltage
Output Voltage
Temperature Coefficient
RH1021BM-7
RH1021DM-7
V OUT Line Regulation
V IN
8.5V V IN 12V
12V V IN 40V
V OUT Load Regulation
I OUT (Sourcing Current)
0 I OUT 10mA
Load Regulation (Shunt Mode) 1.2mA I OUT 10mA
IS Supply Current (Series Mode)
IMIN Minimum Current (Shunt Mode) VIN Is Open
Output Voltage Noise
0.1Hz f 10Hz
10Hz f 1kHz
Long-Term Stability
of VOUT
Temperature Hysteresis
of VOUT
T = 1000 Hrs
Noncumulative
T = ± 25°C
TA = 25°C
NOTES MIN TYP MAX
1 6.95
7.05
2
2
34
32
3 25
3,4 100
1.2
1.0
54
54
67
3
SUB- – 55°C T A 125°C SUB-
GROUP MIN TYP MAX GROUP UNITS
1V
5 2,3 ppm/°C
20 2,3 ppm/°C
1 8 2,3 ppm/V
1 4 2,3 ppm/V
1 40 2,3 ppm/mA
1 150 2,3 ppm/mA
1
1.5 2,3
mA
1
1.2 2,3
mA
µVP-P
4 µVRMS
ppm
ppm
TABLE 1A: ELECTRICAL CHARACTERISTICS (Postirradiation) (Note 7)
SYMBOL PARAMETER
CONDITIONS
10Krad(Si) 20Krad(Si) 50Krad(Si) 100Krad(Si) 200Krad(Si)
NOTES MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX UNITS
VOUT
TCVOUT
Output Voltage
Output Voltage
Temperature Coefficient
RH1021BM-7
RH1021DM-7
1 6.95 7.05 6.95 7.05 6.95 7.07 6.94 7.06 6.93 7.07
V
2 5 5 5 7 10 ppm/°C
2
20 20 20
22 25 ppm/°C
V OUT
V IN
V OUT
I OUT
Line Regulation
Load Regulation
(Sourcing Current)
8.5V V IN 12V
12V V IN 40V
0 I OUT 10mA
3
3
3,8
4 4 4.5
2 22
25 25 25
5 6 ppm/V
2 3 ppm/V
25 25 ppm/mA
Load Regulation
(Shunt Mode)
1.2mA I OUT 10mA 3,4
100 100 100
100 150 ppm/mA
IMIN Minimum Current
(Shunt Mode)
VIN Is Open
1.2 1.2 1.2
1.2 1.2 mA
IS Supply Current
(Series Mode)
1.0 1.0 1.0
1.0 1.0 mA
2


Part Number RH1021-7
Description Precision 7V Reference
Maker Linear Technology
Total Page 4 Pages
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