R/2R Ladder Networks
R/2R Ladder Networks are available in both DIP and SIP
(Molded or Conformal) configurations.
taken from the R/2R ladder. This terminal (OUT) is commonly
used to drive an operational amplifier. R (the terminating resis-
T
tor) is always connected to ground.
OUT
16
RT
9
Standard R/2R Ladder Networks have a resistance tolerance of
±2.0% (±1.0% available on all but low profile SIPs).
15
14
13
12
11
10
16-PIN
8-BIT
DIP
2R
2R
R
2R
R
R
R
R
R
R
Standard R/2R Ladder Networks
Availability is as follows:
2R
2R
2R
2R
2R
2R
DIP/SMD
SIP-CONFORMAL
SIP MOLDED
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
LSB
PIN
BIT
1
MSB
14 Pin - 7 Bit
16 Pin - 8 Bit
6 Pin - 4 Bit
7 Pin - 5 Bit
8 Pin - 6 Bit
9 Pin - 7 Bit
10 Pin - 8 Bit
11 Pin - 9 Bit
12 Pin -10 Bit
14 Pin -12 Bit
6 Pin - 4 Bit
8 Pin - 6 Bit
10 Pin - 8 Bit
10-PIN
8-BIT
SIP
R
2R
R
R
R
R
R
R
2R
2R
2R
2R
2R
2R
2R
2R
2
3
2
4
3
5
4
6
5
7
6
8
7
9
10
PIN 1
BIT OUT
1
8
RT
MSB
LSB
Resistor Power Ratings @ 70˚ C
Low Profile SIP & DIP .................................................... .125W
Medium Profile SIP ........................................................ .170W
High Profile SIP .............................................................. .200W
The R/2R Ladder Network is commonly used for Digital to
Analog (D/A) conversions and Analog to Digital (A/D) conversion
by successive approximations. The bits of the ladder are the
points at which input signals are presented to the ladder and
the output terminal (OUT) is the point at which the output is
How To Order R/2R Ladder Networks
41 16 R - R2R - 503
Model
Resistance/Capacitance Code
(For value of R). 2R is double this value.
• First 2 digits are significant.
• Third digit represents the number
of zeros to follow.
(41 = Molded DIP)
(43 = Molded SIP)
(44 = Wide Body SMD)
(46 = Conformal SIP)
(48 = SMD)
Number of Pins
Physical Configuration
(R = Low Profile - Molded)
(X = Low Profile - Conformal)
(M = Medium Profile)
Electrical Configuration
• R2R = R/2R Ladder Network
(H = High Profile)
(P = Medium Body SOIC)
Specifications are subject to change without notice.
331