Datasheet UTCLAG665F Datasheet (UTC)

UTC LAG665F LINEAR INTEGRATED CIRCUIT

RADIO AND CASSETTE RECORDER
CIRCUIT

DESCRIPTION

The UTC LAG665F is a monolithic integrated circuit,
designed for portable radio cassette.

FEATURES

*1-Chip stereo tape recorder with motor speed controller.
*Operating supply voltage range: Vcc=2~5V
*Good volume control

SOP-28

BLOCK DIAGRAM

25 24 23 22 21 19 20 18 14 17 16 15 13

2627

Power Amp

Motor

1/2 Vcc

Power
Amp

8283 4 5

9 11 10 12

Control

Power Amp

1/2 Vcc

1 2

Pre Amp

Bias
Control

Pre Amp

Attenuator

V/I

Attenuator

6 7

UTC UNISONIC TECHNOLOGIES CO., LTD.

QW-R110-013,A

1

UTC LAG665F LINEAR INTEGRATED CIRCUIT

PIN CONFIGURATION

V

BPRE

1IN+
1IN­INF

PRF

PRE

IOUT

ATT1
CON

VOL

V

REF

1OUT

P

GND

P

V

BP

GND

MD

V

CON

MO

ON

PIN NO. SYMBOL DESCRIPTION PIN NO. SYMBOL DESCRIPTION

1 VBPRE Pre Amp Bias Voltage 15 CONS Speed Control
2 1 IN+ Channel 1 “+” Input 16 CONT Torqul Control
3 1 IN - Channel 1 “-” Input 17 VCCMO Motor Power Control
4 1 NFPRE Feedback 1 18 MOOFF Motor Forced Stop
5 1 OUTPRE Pre Amp Output 1 19 2 OUTP Power Amp Output 2
6 ATT 1 Attenuator 1 20 VCC Supply Voltage
7 CONVOL Volume Control 21 VCCPRE Supply Voltage
8 VREF Reference Voltage 22 PREOFF Pre Amp Off

9 1 OUTP Power Amp Output 1 23 ATT 2 Attenuator 2
10 GNDP Power GND 24 2 OUTPRE Pre Amp Output 2
11 VBP Power Amp Bias

12 GNDMD Motor GND 26 2 IN- Channel 2 “ -” Input
13 VCON Motor Control Voltage 27 2 IN+ Channel 2 “+” Input
14 MOON Motor Forced Start 28 GNDPRE Pre GND

10
11
12
13
14

Voltage

1
2
3
4
5
6
7
8
9

28
27
26
25
24
23
22
21
20
19
18
17
16
15

GND
2IN+

2IN­2NF
2OUT
ATT2
PRE

V
V
2OUT

MO

V
CON
CON

PRE

PRE

PRE

OFF

CCPRE

CC

P

OFF

CCMO

T

S

25 2 NFPRE Feedback 2

UTC UNISONIC TECHNOLOGIES CO., LTD.

QW-R110-013,A

2

UTC LAG665F LINEAR INTEGRATED CIRCUIT

ABSOLUTE MAXIMUM RATINGS(Ta=25°C)

PARAMETER SYMBOL VALUE UNIT

Supply Voltage Vcc -0.3~+7.5 V
Power Dissipation Pd 450 mW
Operating Voltage Vop 2~5 V
Operating Temperature Topr -20~+65 °C
Storage Temperature Tstg -40~+125 °C

ELECTRICAL CHARACTERISTICS(Ta=25°C,Vcc=3V, f=1kHz, RL=16Ω, unless otherwise specified)

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT

Supply Current Icc Vin=0V, IM=0mA 18 25 mA
PRE-AMPLIFIER
Open Loop Gain Gvo Vo=-10dBm, RL=∞ 72 dB
Close Loop Gain Gvc Vo=-10dBm 40 42 44 dB
Maximum Output Voltage Vom THD=10% 0.45 0.6 Vrms
Total Harmonic Distortion THD Vout=100mVrms 0.05 0.5 %
Output Noise Voltage Von Vin=0, Rg=2.2k,

BPF(30~20k)
Input Impedance Zin Vout=-10dBm 18 22 kΩ
Cross Talk between CH CT Rg=2.2k, Vout=-10dBm 30 dB
Pre Amp
Output Voltage when Pre-Off Vooff Vin=100mVrms -50 dB
Output Impedance when Pre-Off Rooff 10 kΩ
Input Impedance when Pre-Off Rioff 10 KΩ
Attenuator
Maximum Input Voltage Vimax 0.2 Vrms
Maximum Attenuation Vamax Vcont=Min 66 dB
Attenuation Error Vaerr Vcont=Max 0 dB
Input Impedance Zia 15 20 kΩ
Control Ternimal Input
Impedance
Power Amplifier
Voltage Gain GV Pout=5mW 26 28 30 dB
Channel Voltage Difference ∆GV Vcont=Max 0 3 dB
Maximum Output Power I Pom 1 THD=10%, RL=32Ω 20 28 mW
Maximum Output Power II Pom 2 THD=10%, RL=16Ω 30 mW
Total Harmonic Distortion THD Pout=5mW 0.2 2 %
Cross Talk between CH CT Pout=5mW 20 30 dB
Output Noise Voltage Von Rg=2.2k, Vcont=Min 0.25 1 mVrms
Ripple Rejection RR Vcc=3V, 100Hz, 100mVp-p 34 40 dB
Pre + Pulse Boost + Power
Noise
Motor *Vcc=3V, Im=100mA
Current Consumption IMC 3 5 mA
Starting Current IMS 500 mA
Reference Voltage Vref Pin 15~Pin 16 0.72 0.8 0.87 V

Zicot 100 kΩ

Vnto Vin=0V, Rg=2.2k,

Vcont=Max*

150 300 µVrms

6 9 mVrms

UTC UNISONIC TECHNOLOGIES CO., LTD.

QW-R110-013,A

3

UTC LAG665F LINEAR INTEGRATED CIRCUIT

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT

Reference Voltage Change I Vref 1 Vcc=2.1~5V 0.05 %/V
Reference Voltage Change II Vref 2 Im=25~250mA 0.01 %/mA
Reference Voltage Change III Vref 3 Ta=-10~50°C 0.01 %/°C
Current Factor K 32 38 43
Current Factor Change I K 1 Vcc=2.1~5V 0.5 %/V
Current Factor Change II K 2 Im=25~250mA 0.05 %/mA
Current Factor Change III K 3 Ta=-10~50°C 0.02 %/°C
Saturation Voltage at Forced ON VCEsa IM=200mA, Pin 14=Vcc 0.6 V
Input Impedance at Forced ON
Pin
Leakage Current at Forced OFF IML 200 µA
Input Impedance at Forced OFF
Pin

TEST CIRCUIT

Rion 5.6 KΩ

Ricon 33 KΩ

NOTE1 : SW12,SW12
R1,R’ =33kΩ

R2,R2’ =5.1kΩ
R3,R3’ =200kΩ
R2,R2,=5.1kΩ
C1,C’ =0.1µF

NOTE2 : See figure 1 for SW

UTC UNISONIC TECHNOLOGIES CO., LTD.

QW-R110-013,A

4

UTC LAG665F LINEAR INTEGRATED CIRCUIT

FIGURE 1

Item Symbol SW No. TEST CONDITION

1 2 3,3’ 4 5 6 7 8 9 10 11 Vcc=3V,f=1kHz,RL=16Ω

AMP
Supply Current Icc

Close Loop Gain Gvc

Maximum Output Voltage Vom

Total Harmonic Distortion THD

Output Noise Voltage Von

Cross Talk between CH CT

c c a b b a b b b a a

b b b b b a b b b a a Im=0mA

b b b b b a b b b a a Vo=244mV

b b b b b a b b b a a Vo=400mV

c c b b b a b b b a a B.P.F.(30-20kHz)

b/cc/bb b b a b b b a a Vo=244mV

Output Voltage when Pre­Off

Attenuator
Maximum Input Voltage Vimax

Maximum Attenuation Vamax

Power AMP

Voltage Gain
Channel Voltage Difference ∆GV

Maximum Output Power I Pom 1

Maximum Output Power II Pom 2

Vooff

GV

b b b a b a b b b a a Vin=100mV

a a a a b a b b b a a Vr=Min, THD=10%,

a a a a b a b b b a a

a a a a b a b b b a a Pout=5mV

a a a a b a b b b a a VR=MAX

a a a a b b a b b a a RL=32Ω,THD=10%

a a a a b a b b b a a RL=16Ω,THD=10%

UTC UNISONIC TECHNOLOGIES CO., LTD.

QW-R110-013,A

5