SANYO LA4582CM Datasheet

Overview

The LA4582CM is a preamplifier plus power amplifier IC
that support auto-reverse, and was developed for 3-V
headphone stereo systems.

Features

• The LA4582CM was developed for cassette playback
systems, and in addition to preamplifier and power
amplifier functions, it also provides low boost and
automatic power limitation (PVSS: Peak Volume Select
System) functions.

• Provided in a 36-pin miniature flat package (0.65 mm
lead pitch) that is optimal for set miniaturization.

• Capable of driving 8-Ω speakers

• Two-channel playback auto-reverse preamplifier

• Two-channel headphone power amplifier

• Low-frequency boost function (auto-loudness effect)

• Output suppression function (PVSS)

• Two-channel radio input switch (pre-mute switch)

• Power mute switch

Package Dimension

unit: mm

Monolithic Linear IC

Ordering number : EN5701

63097HA(OT) No. 5701-1/6

SANYO: QFP36

[LA4582CM]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

Pre + Power Amplifier for

3-V Headphone Stereo Systems

LA4582CM

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

CC

max 4.5 V
Allowable power dissipation Pd max 375 mW
Operating temperature Topr –20 to +75 °C
Storage temperature Tstg –40 to +150 °C

Specifications

Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Recommended supply voltage V

CC

3.0 V

Operating voltage range V

CC

op 1.8 to 3.6 V

Operating Conditions at Ta = 25°C

Ambient temperature, Ta – °C

Allowable power dissipation, Pdmax – mW

No. 5701-2/6

LA4582CM

Parameter Symbol Conditions

Ratings

Unit

min typ max

[PRE + L.BOOST + PVSS + POWER]

Quiescent current

I

CCO

1 Rg = 2.2 kΩ, low boost off, PVSS off 13 19 29 mA

I

CCO

2 Rg = 2.2 kΩ, low boost on, PVSS on 14 20 30 mA

Voltage gain (closed loop) VG

TVO

= –5 dBm 62.5 64.5 67.5 dB

[Preamplifier]

Voltage gain (open loop) VG

0VO

= –5 dBm 70 83 dB

Voltage gain (closed loop) VG

1VO

= –5 dBm 40 dB

Maximum output voltage V

O

max1 THD = 1%, VCC= 1.8 V 0.1 0.2 V

Total harmonic distortion THD

1VO

= 0.2 V, VG = 40 dB/NAB 0.05 0.5 %

Equivalent input noise voltage V

NI

Rg = 2.2 kΩ, BPF = 20 Hz to 20 kHz 1.3 2.0 µV

Crosstalk CT

1

Rg = 2.2 kΩ, TUNE 1 kHz 60 80 dB

Ripple rejection Rr

1

Rg = 2.2 kΩ, VCC= 1.8 V,

40 50 dB

Vr = –20 dBm, fr = 100 Hz

[Power Amplifier]

Output power P

O

THD = 10% 23 34 mW

Voltage gain (closed loop) VG

2VO

= –5 dBm 27 29 32 dB

Total harmonic distortion THD

2PO

= 1 mW 0.4 1.0 %

Interchannel crosstalk CT

2VO

= –5 dBm, RV= 0 Ω 30 40 dB

Output noise voltage V

NO1RV

= 0 Ω, BPF = 20 Hz to 20 kHz 25 40 µV

Ripple rejection Rr

2

RV= 0 Ω, Vr= –20 dBm

45 55 dB

fr = 100 Hz, V

CC

= 1.8 V
Input resistance Ri 22 30 38 kΩ
DC offset voltage V

ODC OFF

Between pin 8 and pins 4 to 6 –90 +90 mV

[L· BOOST]

Voltage gain VG

3VIN

= –30 dBm, boost: on/off –2.3 –3.8 –5.3 dB

Boost

BST

1VINBST

= –30 dBm, f = 100 Hz, boost: on 11.2 14.7 18.2 dB

BST

2VINBST

= –30 dBm, f = 10 Hz, boost: on 7.0 8.5 10 dB

Maximum output voltage V

O

max2 THD = 1%, boost: on 0.3 0.5 V

Total harmonic distortion THD

3VO

= 0.1 V, boost: on 0.04 0.5 %

Interchannel crosstalk CT

3VO

= –20 dBm, Rg = 0, boost: on 25 32 dB

Output noise voltage V

NO2

Rg = 0, BPF = 20 Hz to 20 kHz, boost: off 2.0 5.0 µV

Ripple rejection Rr3

Rg = 0, f

R

= 100 Hz, VR= –20 dBm,

45 53 dB

V

CC

= 1.8 V, boost: on

[L· BOOST + PVSS + POWER] R

V

= 30 kΩ max

Voltage gain VG

4VIN

= –40 dBm, f = 1 kHz, boost: on/off 22.0 24.5 28.0 dB

Low boost output voltage

V

O

1 VIN= –43 dBm, f = 100 Hz, boost: on 0.13 0.23 0.33 V

V

O

2 VIN= –28 dBm, f = 100 Hz, boost: on 0.25 0.4 0.55 V

Low boost total harmonic distortion THD

4VIN

= –40 dBm, f = 100 Hz, boost: on 0.5 1.2 %

PVSS voltage V

O

3 VIN= –40 dBm, PVSS2 –40 –37 –34 dBm

Input increment between the point where

PVSS width W

PVSS

operation starts and the point where the

30 40 dB

output is +4 dB from there.
PVSS: on

PVSS total harmonic distortion THD

5VIN

= –40 dBm, PVSS2 0.5 1.2 %

PVSS start input V

OPIN

PVSS2 –67 –63 –59 dBm

Operating Characteristics at Ta = 25°C, VCC= 3.0 V, fi = 1 kHz, 0.775 V = 0 dBm
RL= 10 kΩ (preamplifier), RL= 30 kΩ (low boost), RL= 16 Ω (power amplifier)

Note: The amount of boost for a 1-kHz signal.