Sales and Corporate Office
1717 Chicago Avenue
Riverside, California 92507-2364
Phone: (951) 788-1700
Fax: (951) 369-1151
Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: (541) 496-0700
Fax: (541) 496-0408
e-mail: caddock@caddock.com • web: www.caddock.com
For Caddock Distributors listed by country see caddock.com/contact/dist.html
© 2004 Caddock Electronics, Inc.
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Input Voltage Dividers for Digital Multimeters and Range-Switching Instruments
Introducing New Smaller Models at Lower Cost
The exceptional performance of this extensive family of
Type 1776 Precision Decade Resistor Voltage Dividers has
There are now 39 standard models in the expanded
family of Type 1776 precision resistor networks that include:
For complete information on quantity price and delivery,
contact our Sales Office.
• 3, 4, and 5 - decade voltage
dividers with ratios from 10:1 to
10,000:1.
• 1,200 volts continuous ratings
and overvoltage to 2,000 volts.
• Many combinations of Ratio and
Absolute Tolerance, and Ratio
and Absolute Temperature
Coefficient.
been achieved through the special
combination of advantages
provided by Caddock's Tetrinox®
resistance films. This advanced
film resistor technology provides
the performance characteristics
required by the precision input
signal circuits of both bench-type
and laboratory digital instruments.
In addition to requiring less
board space, these compact
precision resistor networks deliver higher performance than
selected discrete resistor sets and thin-film networks.
Schematic for
Model 1776-C68
Type 1776 Precision Decade Resistor Voltage Dividers
(Numbers inside circles
reference columns in Model No.
table)
Ratio Tolerance: Maximum
ratio error. (See the specific
Figures for the Ratio Definition).
RatioTemperature Coefficient:
Maximum ratio TC error. (See
the specific Figures for the
Ratio Definition).
Range 1: -40°C to +85°C.
Range 2: 0°C to +70°C.
Voltage Coefficient of Ratio
(ppm/volt): R1 in series with any
combination of R2, R3, R4, and
R5, 100 volts to rated voltage.
Load Life: Ratio stability of
resistance under full load at
+70°C, rated voltage applied to
R1 in series with any combination
of R2, R3, R4, and R5 for 2000 hrs.
Shelf Stability of Ratio: Six
months at shelf conditions.
Overvoltage: Maximum voltage
of 1.67 times rated DC voltage.
Volts DC or peak AC applied to
R1 and any combination of R2,
R3, R4, and R5 in series with R1
for 10 seconds.
Voltage Rating: DC or RMS
AC voltage applied to R1 in
series with any combination of
R2, R3, R4, and R5.
Storage Temperature: -40°C
to +85°C.
Specifications:
6
5
4
3
2
1
7
6
5
4
3
2
1
7
Ratio
Tolerance
%
Fig.
Resistance Values
Model
No.
Ratio Stability
% Change in Ratio
Over-
Voltage
1776-C61
1200
0.1
0.1
30
10
Shelf
Life
Load
Life
0.01
0.005
0.01
Voltage
Coef.
of Ratio
ppm/volt
0.1
Ratio
TC
ppm/°C
Abs. TC
ppm/°C
Absolute
Tolerance
%
Voltage
Rating
R1
R2
R3
R4
R5
9 Meg
900 K
90 K
9 K
900
6
1
2
3
4
5
6
7
1776-C611
1200
0.1
0.05
30
10
0.01
0.005
0.01
0.1
9 Meg
900 K
90 K
9 K
900
6
1776-C62
1200
0.1
0.1
30
10
0.01
0.005
0.01
0.1
9 Meg
900 K
90 K
9 K
1 K
6
1776-C621
1200
0.1
0.05
30
10
0.01
0.005
0.01
0.1
9 Meg
900 K
90 K
9 K
1 K
6
1776-C742
1200
0.25
0.25
50
50
0.04
0.02
0.04
0.5
9 Meg
900 K
90 K
9 K
1 K
7
1776-C74
1200
0.1
0.1
50
50
0.04
0.02
0.04
0.5
9 Meg
900 K
90 K
9 K
1 K
7
1776-232
1200
0.25
0.25
50
50
0.04
0.02
0.04
0.3
9 Meg
900 K
90 K
9 K
900
3
1776-23
1200
0.1
0.1
50
50
0.02
0.01
0.02
0.2
9 Meg
900 K
90 K
9 K
900
3
1776-242
1200
0.25
0.25
50
50
0.04
0.02
0.04
0.3
9 Meg
900 K
90 K
9 K
1 K
3
1776-24
1200
0.25
0.1
50
50
0.02
0.01
0.02
0.2
9 Meg
900 K
90 K
9 K
1 K
3
1776-241
1200
0.25
0.05
50
50
0.02
0.01
0.02
0.2
9 Meg
900 K
90 K
9 K
1 K
3
1776-105
1200
+0, -0.5
0.1
30
5
0.01
0.005
0.01
0.02
9 Meg
900 K
90 K
10 K
N/A
4
1776-C10
1200
+0, -0.5
0.1
30
10
0.01
0.005
0.01
0.02
9 Meg
900 K
90 K
10 K
N/A
9
1776-C105
1200
+0, -0.5
0.1
30
5
0.01
0.005
0.01
0.02
9 Meg
900 K
90 K
10 K
N/A
9
1776-1
1200
0.25
0.05
30
10
0.01
0.005
0.01
0.02
9 Meg
900 K
90 K
10 K
N/A
2
1776-14
1200
0.25
0.1
30
10
0.01
0.005
0.01
0.02
9 Meg
900 K
90 K
10 K
N/A
2
1776-8
1200
0.25
0.1
30
25
0.02
0.01
0.02
0.2
9.9 Meg 90 K
10 K
N/A
N/A
1
1776-9
1200
0.25
0.1
30
10
0.01
0.005
0.01
0.02
9.9 Meg 90 K
10 K
N/A
N/A
1
1776-91
1200
0.25
0.05
30
10
0.01
0.005
0.01
0.02
9.9 Meg 90 K
10 K
N/A
N/A
1
1776-912
1200
0.25
0.02
30
5
0.01
0.005
0.01
0.02
9.9 Meg 90 K
10 K
N/A
N/A
1
1776-C4
1200
0.25
0.25
30
10
0.01
0.005
0.01
0.1
10 Meg 1.1111M 101.01K 10.01K 1.0001K 8
1776-C44
1200
0.1
0.1
30
10
0.01
0.005
0.01
0.1
10 Meg 1.1111M 101.01K 10.01K 1.0001K 8
1776-C441
1200
0.1
0.05
30
10
0.01
0.005
0.01
0.1
10 Meg 1.1111M 101.01K 10.01K 1.0001K 8
1776-C34
1200
0.25
0.25
50
50
0.04
0.02
0.04
0.5
10 Meg 1.1111M 101.01K 10.01K 1.0001K 8
1776-C532
750
0.25
0.25
25
25
0.02
0.01
0.02
0.4
900 K
90 K
9 K
900
N/A
5
1776-C53
750
0.1
0.1
25
15
0.02
0.01
0.02
0.3
900 K
90 K
9 K
900
N/A
5
1776-C542
750
0.25
0.25
25
25
0.02
0.01
0.02
0.4
900 K
90 K
9 K
1 K
N/A
5
1776-C54
750
0.1
0.1
25
15
0.02
0.01
0.02
0.3
900 K
90 K
9 K
1 K
N/A
5
1776-C541
750
0.1
0.05
25
15
0.02
0.01
0.02
0.3
900 K
90 K
9 K
1 K
N/A
5
1776-C6217
1200
0.1
0.02
30
10
0.01
0.005
0.01
0.1
9 Meg
900 K
90 K
9 K
1 K
6
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
Range 2
TC
Temp.
Range
2
1776-C67
9 Meg
900 K
1776-C671
1200
0.1
0.05
30
10
0.01
9 Meg
900 K
90 K
9 K
900
1776-C6715
1200
0.1
30
5
0.01
9 Meg
900 K
90 K
9 K
1776-C68
1200
0.1
30
10
0.01
9 Meg
900 K
90 K
9 K
1 K
1776-C6815
1200
9 Meg
900 K
90 K
9 K
1 K
1776-C48
1200
0.1
0.1
1776-C481
1200
1776-C681
1200
0.1
30
10
0.01
9 Meg
900 K
90 K
9 K
1 K
Range 1
Range 1
Range 1
Range 1
Range 1
Range 1
Range 1
1776-C4815
1200
Range 1
900
10 Meg 1.1111M 101.01K 10.01K 1.0001K
10 Meg 1.1111M 101.01K 10.01K 1.0001K
10 Meg 1.1111M 101.01K 10.01K 1.0001K
10
10
10
10
10
11
11
11
0.1
0.1
0.1
0.05
0.1
0.05
0.05
0.05
0.05
30
30
30
30
5
10
10
5
0.04
0.04
0.04
0.04
0.04
0.03
0.03
0.03
0.01
0.01
0.01
0.01
0.003
0.003
0.003
0.003
0.003
0.003
0.003
0.003
1200
0.1
0.1
30
10
0.003
0.01
0.04
90 K
9 K
900
10
Range 1
0.005
0.005
0.005
0.005
0.005
0.005
0.005
0.005
0.005
= VOUT
= VOUT
= VOUT
= VOUT
1
2
3
4
VIN
10
VIN
VIN
100
VIN
1,000
VIN
10,000
9K
90K
900K
9M
1K
Page 1 of 2
28_IL118.1004
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