CDI-DIODE CD4771A Monolithic temperature compensated zener reference chip Datasheet

• MONOLITHIC TEMPERATURE COMPENSATED ZENER REFERENCE CHIPS
CD4765 thru CD4767A
and
• ALL JUNCTIONS COMPLETELY PROTECTED WITH SILICON DIOXIDE
• 8.5 & 9.1 VOLT NOMINAL ZENER VOLTAGE +5%
CD4770 thru CD4772A
and
• ELECTRICALLY EQUIVALENT TO 1N4765 THRU 1N4772A AND
1N4775 THRU 1N4782A SERIES
CD4775 thru CD4777A
and
• COMPATIBLE WITH ALL WIRE BONDING AND DIE ATTACH TECHNIQUES,
WITH THE EXCEPTION OF SOLDER REFLOW
CD4780 thru CD4782A
38
23
MAXIMUM RATINGS
38
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
TYPE
NUMBER
ZENER
VOLTAGE
vz @ I
ZT
ZENER
TEST
CURRENT
I
ZT
(Note 3)
23
ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified.
MAXIMUM
MAXIMUM
VOLTAGE
TEMPERATURE
EFFECTIVE
ZENER
TEMPERATURE
RANGE
TEMPERATURE
IMPEDANCE
STABILITY
COEFFICIENT
ZZT
∆V
ZT
MAXIMUM
(Note 1)
(Note 2)
VOLTS
mA
OHMS
mV
CD4765
CD4765A
CD4766
CD4766A
9.1
9.1
9.1
9.1
0.5
0.5
0.5
0.5
350
350
350
350
68
141
34
70
0
-55
0
-55
to
to
to
to
°C
+
+
+
+
75
100
75
100
0.01
0.01
0.005
0.005
CD4767
CD4767A
CD4770
CD4770A
9.1
9.1
9.1
9.1
0.5
0.5
1.0
1.0
350
350
200
200
14
28
68
141
0
-55
0
-55
to
to
to
to
+
+
+
+
75
100
75
100
0.002
0.002
0.01
0.01
CD4771
CD4771A
CD4772
CD4772A
9.1
9.1
9.1
9.1
1.0
1.0
1.0
1.0
200
200
200
200
34
70
14
28
0
-55
0
-55
to
to
to
to
+
+
+
+
75
100
75
100
0.005
0.005
0.002
0.002
CD4775
CD4775A
CD4776
CD4776A
8.5
8.5
8.5
8.5
0.5
0.5
0.5
0.5
350
350
350
350
64
132
32
66
0
-55
0
-55
to
to
to
to
+
+
+
+
75
100
75
100
0.01
0.01
0.005
0.005
CD4777
CD4777A
CD4780
CD4780A
8.5
8.5
8.5
8.5
0.5
0.5
1.0
1.0
350
350
200
200
13
26
64
132
0
-55
0
-55
to
to
to
to
+
+
+
+
75
100
75
100
0.002
0.002
0.01
0.01
CD4781
CD4781A
CD4782
CD4782A
8.5
8.5
8.5
8.5
1.0
1.0
1.0
1.0
200
200
200
200
32
66
13
26
0
-55
0
-55
to
to
to
to
+
+
+
+
75
100
75
100
0.005
0.005
0.002
0.002
FIGURE 1
% / °C
NOTE 1
Zener impedance is derived by superimposing on lZT A 60Hz rms a.c. current
equal to 10% of lZT.
NOTE 2
The maximum allowable change observed over the entire temperature range i.e.,
the diode voltage will not exceed the specified mV at any discrete temperature
between the established limits, per JEDEC standard No.5.
NOTE 3
Zener voltage range is +5%
DESIGN DATA
METALLIZATION:
Top: C (Cathode)................. ..Al
A (Anode).......................Al
Back: ......................................Au
AL THICKNESS....... .....25,000 Å Min
GOLD THICKNESS... .....4,000 Å Min
CHIP THICKNESS............. .....10 Mils
CIRCUIT LAYOUT DATA:
Backside must be electrically
isolated.
Backside is not cathode.
For Zener operation cathode
must be operated positive
with respect to anode.
TOLERANCES: ALL
Dimensions + 2 mils
22 COREY STREET, MELROSE, MASSACHUSETTS 02176
PHONE (781) 665-1071
FAX (781) 665-7379
WEBSITE: http://www.cdi-diodes.com
E-mail: [email protected]
CD4765 thru CD4767A thru CD4770 thru CD4772A and
CD4775 thru CD4777A and CD4780 thru CD4782A
1000
ZENER IMPEDANCE ZZT (OHMS)
500
100
50
10
1
2
3
OPERATING CURRENT lZT (mA)
FIGURE 2
ZENER IMPEDANCE
VS.
OPERATING CURRENT
+.0015
CHANGE IN TEMPERATURE COEFFICIENT ( %/°C)
+.0010
+.0005
0
-.0005
-.0010
-.0015
0.5
1.0
1.5
OPERATING CURRENT lZT (mA)
2.0
FIGURE 3
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT
WITH CHANGE IN OPERATING CURRENT