CF5762AB0 Datasheet, PDF (10/10 Pages) Nippon Precision Circuits Inc – Analog Chime Clock CMOS IC

CF5762AB0
Melody Output Circuit
The melody output circuit employs a BTL configura-
tion.
The D/A converter is a 2-pin (SP and SPN) 9-bit P-
channel current adder which, together with MSB and
MSBN outputs, is used to drive 4 external transistors
(PNP × 2, NPN × 2) which are used to drive a
speaker.
In addition, the volume adjust pin (VOL) can be used
to adjust the volume by connecting an external 10kΩ
resistor between VOL and VSS.
VDD
MSB
MSBN
SPN
SP
VOL
VSS
VOL
VDD
VSS
Figure 6. BTL output
Control Signal Output
A LOW-level active busy signal is output from ATN whenever a melody output is playing.
NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to
improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility for
the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits
are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Nippon Precision
Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification.
The products described in this data sheet are not intended to use for the apparatus which influence human lives due to the failure or
malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinafter,
including compliance with export controls on the distribution or dissemination of the products. Customers shall not export, directly or
indirectly, any products without first obtaining required licenses and approvals from appropriate government agencies.
NIPPON PRECISION CIRCUITS INC.
4-3, Fukuzumi 2-chome, Koto-ku,
Tokyo 135-8430, Japan
Telephone: [phone]
Facsimile: [phone]
http://www.npc.co.jp/
Email: [e-mail]
NP0014AE 2000.10
NIPPON PRECISION CIRCUITS INC.—10