datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

CXD2073S View Datasheet(PDF) - Sony Semiconductor

Part Name
Description
MFG CO.
CXD2073S
Sony
Sony Semiconductor 
CXD2073S Datasheet PDF : 11 Pages
1 2 3 4 5 6 7 8 9 10
CXD2073S
Application Circuit for D/A Converter
9 DAVD
10µ
0.1µ
11 DAVS
AYO 10
3k
VRF 12
2k
3.3k
IRF 15
(R')
Y OUT
200
(R)
0.1µ
ACO 8
0.1µ
VG 13
0.1µ
VB 14
C OUT
200
(R)
: analog power supply 5V
: analog ground
Method of selecting output resistance
The CXD2073S has a built-in current output-type D/A converter. To obtain the output voltages, connect
resistors to AYO and ACO pins.
VFS = IFS × R
Here, VFS is output full-scale voltage, IFS is output full-scale current, and R is the output resistance
connected to each IO.
In addition, connect a resistance of 16 times the output resistor to the reference current pin IRF. In the case
where the value comes to be impractical, use a value of resistance as close to the value calculated as
possible. At that time,
VFS = VRF × 16 × R/R'.
R is the output resistance connected to each IO, R' is the resistance connected to IRF, and VRF is the VRF
pin voltage. Power consumption can be reduced by using higher resistance values, but then glitch energy
and data settling time increase contrastingly. Select optimum resistance values according to the system
applications.
In case of the circuit above, VFS = 2 [V] × 16 × 0.2k/3.3k 1.93 [V], IFS = 1.93/0.2k 9.65 [mA].
–6–

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]