UPD9903

Features:

Single-chip monolithic LSI (CMOS)
PCM CODEC oversampling-type A/D and D/A converters
Programmable functions
Termination impedance
Hybrid balance network
Feed resistance
Feed current
PAD control
A-law and -law
Digital gain set function
Ring-Trip function
Single power supply (+5 V)
Low power consumption during standby mode: 20 mW (TYP.)


Pinout




Specifications

Parameter	Symbol	Conditions	Rating	Units
Power supply voltage	VDD	AVDD, DVDD1, DVDD2	0.3 to +7.0	V
Analog input voltage	VAIN	AIN, ASCN, AGDT, ACOMIN, BBIN, DCIN1, DCIN2, and DCIN3 pins	0.3 to VDD + 0.3	V
Digital input voltage	VDIN	HWR, DCLK, FS, RST, AUX/MODE, RTIN0, and RTIN1 pins	0.3 to VDD + 0.3	V
Applied voltage to analog output pin	VAOUT	AOUT, DCOUT1, DCOUT2, and ACOMOUT pins	0.3 to VDD + 0.3	V
Applied voltage to digital output pin	VDOUT	HWX, BSY, SUS, RC1, RC2, RC3, EXS, EXD, BCUT, ALM, PD, and TYPE pins	0.3 to VDD + 0.3	V
Power dissipation	PT		500	mW
Ambient operating temperature	TA		0 to +70
Storage temperature	Tstg		65 to +150

Description

The PD9903 is a digital CODEC that can be used in analog subscriber circuits such as private branch exchangers (PBXs) and switching equipment for central offices. It features three of the functions required for analog subscriber circuits: 2W/4W conversion, CODEC supervision, and subscriber line supervision.Use of the PD9903 in combination with a BS-SLIC (PC7073) can reduce the number of components required in analog subscriber circuits.