Datasheet
R2A20169NP/SA/SP
8-bit 12ch D/A Converter with Buffer Amplifiers
R03DS0020EJ0300
Rev.3.00
Jul 25, 2013
Description
The R2A20169 is an integrated circuit semiconductor of CMOS structure with 12 channels of built in D/A
unnecessary and enabling configuration of a system with few component parts.
Serial data transfer type input can easily be used through a combination of three lines: DI, CLK, and LD.
Outputs incorporate buffer op-amps that have a drive capacity of 1 mA or above for both sink source, and
can operate over the entire voltage range from almost ground to Vcc ( 0 to 5V ), making peripheral elements
unnecessary and enabling configuration of a system with few component parts.
Very small QFN package is added to lineup. It is suitable for a small mounting and reduces the mounting area.
Features
· Guarantee Nonlinearity error : +/-1.0LSB, Differential nonlinearity error : +/-0.7LSB
· Data transfer format: 12-bit serial data input type by 3 wire ( DI, SCK, LD )
· Output buffer op-amps: Operable over entire voltage range from almost ground to Vcc ( 0 to 5V )
· High output current capacity: +/-1mA or Higher
· Very small size package line-up: QFN-20 (pin pitch: 0.5mm), TSSOP-20 (pin pitch 0.65mm)
Application
· Conversion from digital data to analog control data for home-use and industrial equipment.
Block Diagram
Number for TSSOP/SOP package
Number for QFN package
Ao12
Vcc
Ao11
GND
Ao2
Ao1
DI
CLK
LD
DO
20
19
18
17
16
15
14
13
12
11
18
17
16
15
14
13
12
11
10
9
D/A
D/A
Power on
reset
8-bit latch
8-bit latch
12-bit shift register
D0 1 2 3 4 5 6 7
8-bit upper
segment R-2R
D/A converter
8 9 10 11
D/A
Channel
decoder
8
8-bit latch
8-bit latch
12
8-bit latch
8-bit latch
8-bit latch
8-bit latch
8-bit latch
8-bit latch
8-bit latch
8-bit latch
8-bit upper
segment R-2R
D/A converter
D/A
D/A
D/A
D/A
D/A
D/A
D/A
19
20
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
10
VrefL
Ao3
Ao4
Ao5
Ao6
Ao7
Ao8
Ao9
Ao10
VrefU
R03DS0020EJ0300 Rev.3.00
Jul 25, 2013
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