LA4592W [SANYO]

1.5-V Preamplifier + Power Amplifier for Headphone Stereo Products; 1.5 -V前置放大器+功率放大器立体声耳机产品


型号：	LA4592W
厂家：	SANYO SEMICON DEVICE
描述：	1.5-V Preamplifier + Power Amplifier for Headphone Stereo Products 1.5 -V前置放大器+功率放大器立体声耳机产品放大器功率放大器
文件：	总5页 (文件大小：164K)
中文：	中文翻译
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Ordering number : EN5662

Monolithic Linear IC

LA4592W

1.5-V Preamplifier + Power Amplifier

for Headphone Stereo Products

functions.

• Ripple filter

Overview

The LA4592W is a single-chip 1.5-V headphone stereo

system IC. The LA4592W adds a variety of functions,

including a switch amplifier (for end product audio quality

switches, the metal tape switch, and other switches) and an

AMSS (Automatic Music Search System) function that

supports blank skipping, to the earlier LA4590W.

Furthermore, the LA4592W provides even lower no-signal

time power levels for lower end-product power

dissipation. In combination with the LA3235W 1.5-V

record preamplifier IC, the LA4592W can be used to

implement a record/playback cassette system with just two

ICs.

• Low boost function (BTL operation in the low-

frequency region)

• Inter-track detection function (Supports AMSS and

blank skipping)

• Two switching amplifiers

• Power switch (standby function)

Features

• Virtual ground impedance is reduced by built-in V

amplifier

REF

• No capacitor required for ripple filter oscillation

prevention.

• Provides ample output power at low frequencies.

Functions

• Stereo preamplifier: supports auto reverse and includes a

muting function.

(P = 24 mW, V = 1.2 V, f = 150 Hz)

• High-frequency cutoff capacitors built into the

preamplifier and power amplifier inputs to minimize

buzzing.

• Stereo power amplifier: Includes OCL and muting

Package Dimensions

unit: mm

3163A-SQFP48

[LA4592W]

Ambient temperature, Ta – °C

SANYO: SQFP48

Specifications

Maximum Ratings at Ta = 25°C

Parameter

Maximum supply voltage

Symbol

Conditions

Ratings

3.0

Unit

_CCmax

Pd max

Topr

Allowable power dissipation

Operating temperature

Storage temperature

320

–10 to +60

–40 to +125

°C

Tstg

°C

Allowable Operating Ranges at Ta = 25°C

Parameter

Recommended supply voltage

Operating supply voltage range

Symbol

V_CC

Conditions

Ratings

1.5

Unit

V_CCop

0.95 to 2.2

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

73097HA (OT) No. 5662-1/5

LA4592W

Operating Characteristics at Ta = 25°C, V = 1.2 V, f = 1 kHz, 0.775 V = 0 dB, R = 10 kΩ (preamplifier)

RL = 16 Ω (power amplifier)

Ratings

typ

Parameter

Symbol

Conditions

Unit

min

max

[PRE + PWR]

_CCO1

Rg = 2.2 kΩ, R_V= 0 Ω

With the power switch off

V_O= –20 dBm, R_V= 10 kΩ

8.5

0.1

µA

Quiescent current

I_CCO2

Voltage gain (closed loop)

[PRE AMP]

VG_T

Voltage gain (open loop)

Voltage gain (closed loop)

Maximum output voltage

Total harmonic distortion

Equivalent input noise voltage

Interchannel crosstalk

F/R crosstalk

VG₀

VG₁

V_O= –20dBm

100

35.3

210

0.08

1.3

µV

V_Omax1 THD = 1 %

THD1

V_N1

CT1

CT2

VG = 35.3 dB/NAB, V_O= 100 mV

0.5

3.0

Rg = 2.2 kΩ, BPF = 20 Hz to 20 kHz

Rg = 2.2 kΩ, TUNE 1 kHz, V_O= –20 dBm

Rg = 2.2 kΩ, Vr = –30 dBm,

fr = 100 Hz, TUNE 100 Hz

Ripple rejection ratio

R_r1

V_IN= –40 dBm, TUNR 1 kHz,

With the muting function on

Muting output voltage

V_M1

–90

dBm

[Low Boost + Power Amplifier]

VG₃

VG₄

VG₅

VG₆

P_O1

P_O2

THD2

CT3

V_NO

V_O= –20 dBm

20.5

24.5

27.5

0.3

25.5

30.5

V_O= –20 dBm, L.B = ON

V_O= –20 dBm, L.B = ON, f = 10 kHz

V_O= –20 dBm, L.B = ON, f = 100 Hz

THD = 10 %

THD = 10 %, f = 100 Hz, L.B = ON

P_O= 1 mW

Voltage gain (closed loop)

Output voltage

Total harmonic distortion

Interchannel crosstalk

Output noise voltage

1.5

V_O= –20 dBm, R_V= 0 Ω

R_V= 0 Ω, BPF = 20 Hz to 20 kHz

µV

R_V= 0 Ω, Vr = –30 dBm,

Ripple rejection ratio

Muting output voltage

R_r2

fr = 100 Hz, TUNE 100 Hz

V_IN= –30 dBm, TUNE 1 kHz,

With the muting function on

V_M2

–90

dBm

Input resistance

Voltage gain difference

[Ripple Filter]

∆VG3

1.5

kΩ

fr = 100 Hz, Vr = –30 dBm, V_CC= 1.0 V,

I_RF= 25 mA, using a rank 6 2SB1295

Ripple rejection ratio

R_r3

Output voltage

[AMSS]

V_RF

V_CC= 1.0 V, I_RF= 25 mA

0.89

3.33

479

0.94

The preamplifier output voltage

_OAMSS1 when the AMSS V_O= 0.6 V p-o

With the PWR muting on. (AMSS)

Operating output voltage

4.7

6.64

µV

The preamplifier output voltage

_OAMSS2 when the AMSS V_O= 0.6 V p-o

With the PWR muting off. (BLANK SKIP)

675

953

The preamplifier output voltage

when the AMSS V_O= 0.6 V p-o

Operating output voltage

_OAMSS3

2.62

375

3.7

5.23

µV

With pin 34 shorted through a 270-Ω resistor.

With the PWR muting on.

The preamplifier output voltage

when the AMSS V_O= 0.6 V p-o

_OAMSS4

530

749

With pin 34 shorted through a 270-Ω resistor.

With the PWR muting on.

[SW AMP]

Voltage gain (closed loop)

Maximum output voltage

VG₇

V_O= –25 dBm

–1.2

–0.7

–0.2

V_Omax2 THD = 1 %

With the input pins open, Vr = –30 dBm,

fr = 100 Hz, TUNE 100 Hz

Ripple rejection ratio

R_r4

Output voltage when off

V_M3

V_IN= –20 dBm, TUNE 1 kHz, SW OFF

–90

dBm

No. 5662-2/5

LA4592W

AMSS Temperature Characteristics (Values for reference only)

Ratings

typ

Parameter

Symbol

Conditions

Unit

°C

min

–10

max

AMSS

The preamplifier output voltage

V_OAMSS1when the AMSS V_O= 0.6 V p-o

With the PWR muting on. (AMSS)

3.9

4.7

5.4

µV

Operating output voltage

The preamplifier output voltage

V_OAMSS2when the AMSS V_O= 0.6 V p-o

605

675

735

Block Diagram

No. 5662-3/5

LA4592W

Test Circuit Diagram

No. 5662-4/5

LA4592W

Sample Application Circuit

*: Adjust the values of the capacitors marked with an asterisk to match the timing required by the end product.

■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace

equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of

which may directly or indirectly cause injury, death or property loss.

■ Anyone purchasing any products described or contained herein for an above-mentioned use shall:

➀ Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and

distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all

damages, cost and expenses associated with such use:

➁ Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on

SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees

jointly or severally.

■ Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for

volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied

regarding its use or any infringements of intellectual property rights or other rights of third parties.

This catalog provides information as of July, 1997. Specifications and information herein are subject to change

without notice.

No. 5662-5/5

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