OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

CAT5137SDI-00GT3

P1-P3P4-P6P7-P9P10-P10
Semiconductor Components Industries, LLC, 2013
July, 2013 − Rev. 1
1 Publication Order Number:
CAT5136/D
CAT5136, CAT5137,
CAT5138
Digital Potentiometers (POTs)
with 128 Taps and
I
2
C Interface
Description
CAT5136, CAT5137, and CAT5138 are a family of digital POTs
operating like mechanical potentiometers in various configurations.
The tap points between the 127 equal resistive elements are connected
to the wiper output via CMOS switches. The switches are controlled
by a 7-bit Wiper Control Register (WCR) via the I
2
C serial bus.
CAT5136 is configured as a variable resistor. CAT5137 and CAT5138
are resistive voltage dividers, with one terminal of the potentiometer
connected to GND. CAT5137 and CAT5138 have different device IDs,
which makes it possible to use both on the same I
2
C bus. Upon
power-up, the WCR is set to mid-scale (1000000).
Features
Single Linear Digital Potentiometer with 128 Taps
End-to-End Resistance of 10 kW, 50 kW and 100 kW
I
2
C Interface
Wiper goes to Midscale at Power-up
Digital Supply Range (V
DD
): 2.7 V to 5.5 V
Low Standby Current
Industrial Temperature Range: −40C to +85C
6-pin SC−70 Package
These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS
Compliant
Typical Applications
LCD Screen Adjustment
Volume Control
Mechanical Potentiometer Replacement
Gain Adjustment
Line Impedance Matching
VCOM Setting Adjustments
http://onsemi.com
SC−70
SD SUFFIX
CASE 419AD
PIN CONNECTIONS
(Top Views)
1
3 4
5
VDD
GND
SCL
SDA
RL
RW
2
6
CAT5136
1
3 4
5
VDD
GND
SCL
SDA
RH
RW
2
6
CAT5137
CAT5138
(for low pin count devices)
See detailed pin function descriptions on page 2.
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
ORDERING INFORMATION
CAT5136, CAT5137, CAT5138
http://onsemi.com
2
Figure 1. Block Diagram
SDA
SCL
RW
RH
VDD
GND
(CAT5137, CAT5138)
Power On
Midscale
I
2
C
Interface
and
Control
SDA
SCL
RW
RL
VDD
GND
(CAT5136)
Power On
Midscale
I
2
C
Interface
and
Control
Table 1. PIN FUNCTION DESCRIPTION
Pin No.
Pin Name Description
CAT5136 CAT5137/CAT5138
1 1 VDD Digital Supply Voltage (2.7 V to 5.5 V)
2 2 GND Ground
3 3 SCL Serial Bus Clock input for the I
2
C Serial Bus. This clock is used to clock all data
transfers into and out of the CAT5136−8
4 4 SDA Serial Data Input/Output − Bidirectional Serial Data pin used to transfer data into
and out of the CAT5136−8. This is an Open-Drain I/O and can be wire OR’d with
other Open-Drain (or Open Collector) I/Os.
5 5 RW Wiper Terminal for the potentiometer
6 − RL Low Reference Terminal for the potentiometer
− 6 RH High Reference Terminal for the potentiometer
Table 2. ABSOLUTE MAXIMUM RATINGS
Parameter Symbol Range Unit
Temperature Under Bias −55 to +125 C
Storage Temperature Range T
STG
−65 to 150 C
Voltage on any SDA, SCL, A0 & A1 pins with respect to Ground (Note 1) −0.3 to V
DD
+ 0.3 V
Voltage on RH, RL & RW pins with respect to Ground −0.3 to V
DD
+ 0.3 V
V
DD
with respect to Ground −0.3 to +6 V
Wiper Current (10 sec) 6 mA
Lead Soldering temperature (10 sec) +300 C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. Latch-up protection is provided for stresses up to 100 mA on address and data pins from −0.3 V to V
DD
+0.3 V.
Table 3. RECOMMENDED OPERATION CONDITIONS
Parameter Symbol Value Unit
Digital Supply Voltage V
DD
+2.7 to +5.5 V
Operating Temperature Range −40 to +85 C
CAT5136, CAT5137, CAT5138
http://onsemi.com
3
Table 4. POTENTIOMETERS CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.)
Parameter
Symbol Test Conditions
Limits
Units
Min Typ Max
Potentiometer Resistance (10 kW)
R
POT
10
kW
Potentiometer Resistance (50 kW)
R
POT
50
kW
Potentiometer Resistance (100 kW)
R
POT
100
kW
Potentiometer Resistance Tolerance R
TOL
20 %
Power Rating 25C 50 mW
Wiper Current I
W
3 mA
Wiper Resistance R
W
V
DD
= 3.3 V 85 200
W
Voltage on R
W
, R
H
or R
L
V
TERM
GND = 0 V; V
DD
= 2.7 V to +5.5 V GND V
DD
V
Resolution RES 0.78 %
Integral Non-Linearity (Note 3) INL V
W(n)(actual)
− V
W(n)(expected)
(Notes 6, 7)
1 LSB
(Note 5)
Differential Non-Linearity (Note 4) DNL V
W(n+1)
− [V
W(n)
+LSB] (Notes 6, 7) 1 LSB
(Note 5)
Resistor Integral Non-Linearity R
INL
R
n
− n*LSB (Notes 6, 8) 2 LSB
(Note 5)
Resistor Differential Non-Linearity R
DNL
R
n
− [R
n−1
+ LSB] (Notes 6, 8) 1 LSB
(Note 5)
Temperature Coefficient of R
POT
T
CRPOT
(Note 2) 300 ppm/C
Ratiometric Temperature Coefficient T
CRatio
(Note 2) 30 ppm/C
Potentiometer Capacitances C
H
/C
L
/C
W
(Note 2) 10/10/25 pF
Frequency Response fc R
POT
0.4 MHz
2. This parameter is tested initially and after a design or process change that affects the parameter.
3. Integral Non-Linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as
a potentiometer.
4. Differential Non-Linearity is utilized to determine the actual change in voltage between two successive tap positions when used as a
potentiometer.
5. LSB = (R
HM
− R
LM
)/127; where R
HM
and R
LM
are the highest and lowest measured values on the wiper terminal.
6. n = 1, 2, ..., 127
7. V
DD
@ R
H
; V
W
measured @ R
W
with no load.
8. Rw and R
L
in the range of 0 V and V
DD
.
Table 5. D.C. ELECTRICAL CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.)
Parameter
Symbol Test Conditions Min Max Units
Power Supply Current
(Write/Read)
I
DD
F
SCL
= 400 kHz, SDA Open,
V
DD
= 5.5 V, Input = GND
200
mA
Standby Current I
SB(VDD)
V
IN
= GND or V
DD
, SDA = V
DD
0.5
mA
Input Leakage Current I
LI
V
IN
= GND to V
DD
−1 1
mA
Output Leakage Current I
LO
V
OUT
= GND to V
DD
−1 1
mA
Input Low Voltage V
IL
−0.3 V
DD
x 0.3 V
Input High Voltage V
IH
V
DD
x 0.7 V
DD
+ 0.3 V
Output Low Voltage (V
DD
= 3.0 V) V
OL
I
OL
= 3 mA 0.4 V
P1-P3P4-P6P7-P9P10-P10

CAT5137SDI-00GT3

Mfr. #:
Buy CAT5137SDI-00GT3
Manufacturer:
ON Semiconductor
Description:
Digital Potentiometer ICs DPP IIC 128 TAPS VOLATILE
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet