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Número de pieza | CAT5138 | |
Descripción | (CAT5136 - CAT5138) Digitally Programmable Potentiometer | |
Fabricantes | ON Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de CAT5138 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
No Preview Available ! CAT5136, CAT5137,
CAT5138
Digitally Programmable
Potentiometer (DPP) with
128 Taps and I2C Interface
Description
CAT5136, CAT5137, and CAT5138 are a family of Digitally
Programmable Potentiometers (DPP) 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 I2C 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 I2C bus. Upon power−up, the WCR is
set to mid−scale (1000000).
Features
• Single Linear DPP with 128 Taps
• End−to−End Resistance of 10 kW, 50 kW and 100 kW
• I2C Interface
• Wiper goes to Midscale at Power−up
• Digital Supply Range (VDD): 2.7 V to 5.5 V
www.DataSheet.co.kr
• Low Standby Current
• Industrial Temperature Range: −40°C to +85°C
• 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
(for low pin count devices)
VDD 1
6 RL
GND 2
5 RW
SCL 3
4 SDA
CAT5136
VDD 1
6 RH
GND 2
5 RW
SCL 3
4 SDA
CAT5137
CAT5138
(Top Views)
See detailed pin function descriptions on page 2.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
© Semiconductor Components Industries, LLC, 2012
January, 2012 − Rev. 0
1
Publication Order Number:
CAT5136/D
Datasheet pdf - http://www.DataSheet4U.net/
1 page CAT5136, CAT5137, CAT5138
TYPICAL PERFORMANCE CHARACTERISTICS
60
50
VCC = 2.7 V
VCC = 5.5 V
40
30
20
10
Rheostat Configuration
TA = +25°C, RPOT = 50 kW
0
0 16 32 48 64 80 96 112 128
TAP POSITION
Figure 2. Resistance between RW and RL
90
80
70
60
50
40
30
20
10
0
2
−40°C
25°C
90°C
125°C
345
VCC (V)
Figure 3. Power Supply Current
6
1.0
0.8
0.6
0.4
0.2
0
−0.2
−0.4
−0.6
−0.8
−1.0
0
1.0
Potentiometer Configuration
TA = +25°C, RPOT = 10 kW
0.8
0.6
0.4
0.2
0
−0.2
−0.4
VCC = 2.7 V
VCC = 5.5 V
−0.6
www.DataSheet.co.kr
−0.8
16 32 48 64 80 96 112 128
−1.0
0
TAP POSITION
Figure 4. Integral Non−Linearity
Potentiometer Configuration
VCC = 2.7 V
VCC = 5.5 V
16 32 48 64 80 96 112 128
TAP POSITION
Figure 5. Differential Non−Linearity
tF
SCL
tSU:STA
SDA IN
SDA OUT
tLOW
tHIGH
tLOW
tR
tHD:STA
tHD:DAT
tSU:DAT
tAA tDH
Figure 6. Bus Timing
tSU:STO
tBUF
http://onsemi.com
5
Datasheet pdf - http://www.DataSheet4U.net/
5 Page |
Páginas | Total 10 Páginas | |
PDF Descargar | [ Datasheet CAT5138.PDF ] |
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