ICM7115
L
OW
C
OST
S
INGLE
C
HIP
T
ELEPHONE
IC
W
ITH
V
OLUME
C
ONTROL
FEATURES
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•
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Includes dialer, speech, and ringer
circuit replacing two or more ICs.
Single board design meets multiple
PTT requirements.
Support volume control.
Adjustable flash duration.
32-digit last number redial.
Selectable tone/pulse dialing.
13 to 70Hz ring frequency detection.
Operating range from 15 to 100mA.
Compatible with ICM7101D.
OVERVIEW
ICM7115 is a CMOS single chip telephone
integrated circuit that meets multiple PTT
requirements, allowing phone manufacturers
to have single board design for various
countries. This reduces inventory and simplify
manufacturing processes.
ICM7115 integrates dialer, speech, and ringer
circuits. The integration reduces component
counts, hence increases product reliability.
ICM7115 supports volume up and volume
down keys to allow user to adjust received
audio level.
TYPICAL APPLICATION CIRCUIT
Typical application circuit is as specified in Appendix A.
PACKAGE
28-Lead SOIC
AGND 1
VDD 2
VDDI 3
GND 4
TXO 5
VL 6
LLC 7
FOPT0 8
MFL0 9
HS_DPB 10
OSC1 11
OSC2 12
RGD 13
MO 14
7115
SOIC
28 STB
27 RXI
26 RXO
25 CI
24 M2
23 M1
22 R1
21 R2
20 R3
19 R4
18 C1B
17 C2B
16 C3B
15 C4B
Figure 1:
28-lead SOIC Package
Rev. 2.5
ICmic reserves the right to change the specifications without prior notice
1
ICMIC [ IC MICROSYSTEMS ]
