Sanyo LA8515N Specifications

Ordering number:ENN3301A

Monolithic Linear IC

LA8515N

Telephonic Speech Network

Overview

The SANYO LA8515N telephonic speech network provides amplification, switching and line drive functions for telephone equipment. It can perform 2 to 4 line conversion and impedance matching, and supports both DTMF and keytone signals.

The LA8515N’s low operating current reduces line load. Switching between the DTMF/keytone and voice circuits is controlled directly from a single MUTE input.

The LA8515N is available in plastic 20-pin DIPs.

Features

•Direct connection to low-impedance receiver.

•DTMF/keytone and voice circuit switching controlled by a single MUTE input.

•Receive and transmit gain are adjusted automatically in response to the line current.

•Applicable to a wide variety of transmitters and receivers by selecting external components.

Package Dimensions

unit:mm
3021C-DIP20
			[LA8515N]
			24.0
20			11
				7.62	6.4
					0.25
1			10
1.0
			(3.25)	3.9max
(0.57)	2.54		0.51min	3.3
		0.5	1.2
				SANYO : DIP20

Specifications

Maximum Ratings at Ta = 25˚C

Parameter	Symbol	Conditions	Ratings	Unit
Line voltage	VL max		15	V
Line current	IL max		150	mA
Allowable power dissipation	Pd max		1200	mW
Operating temperature	Topr		–30 to +75	˚C
Storage temperature	Tstg		–55 to +150	˚C

Operating Characteristics at Ta = 25˚C, f=1kHz, See specified Test Circuit.

Parameter	Symbol	Conditions		Ratings		Unit
			min	typ	max
		IL=20mA		3.6		V
Line voltage	VL	IL=50mA		6.1		V
		IL=120mA		12.3		V
		IL=20mA		2.1		V
Supply voltage	VCC	IL=50mA		3.6		V
		IL=120mA		7.1		V

Continued on next page.

Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other parameters) listed in products specifications of any and all SANYO products described or contained herein.

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

12501TN (KT)/D159TA/O319TA, TS (US) No.3301–1/6

LA8515N

Continued from preceding page.

	Parameter	Symbol	Conditions		Ratings		Unit
				min	typ	max
	Transmit gain	GT	IL=20mA, VIN=–55dBV	38	40	42	dB
			IL=120mA, VIN=–55dBV	35	37		dB
	Receive gain	GR	IL=20mA, VIN=–20dBV	–4	–2	0	dB
			IL=120mA, VIN=–20dBV	–9.5	–7	–5	dB
	DTMF gain	GMF	IL=20mA, VIN=–30dBV	23	25	27	dB
			IL=120mA, VIN=–30dBV	20	22		dB
	Transmit dynamic range	DRT	IL=20mA, THD=4%	2.5			Vp-p
			IL=120mA, THD=4%	4.6			Vp-p
	Receive dynamic range	DRR	IL=20mA, THD=10%	0.3			Vp-p
			IL=120mA, THD=10%	0.5			Vp-p
	DTMF input impedance	ZIMF	IL=50mA	24			kΩ
	KTI input impedance	ZKTI	IL=50mA	17			kΩ
	MUTE high-level input voltage	VIH	IL=20mA to 120mA	1.5		VCC	V
	MUTE low-level input voltage	VIL	IL=20mA to 120mA	0		0.2	V
	Transmit attenuation	GT	IL=30mA, PADC grounded via 24kΩ		3		dB
	Receive attenuation	GR	IL=30mA, PADC grounded via 24kΩ		6		dB
			IL=20mA		0.65		V
	Reference voltage	VREF	IL=50mA		1.13		V
			IL=120mA		2.1		V

Note) Be careful of dielectric breakdown.

Equivalent Circuit Block Diagram

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