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UTC LAG668
LINEAR INTEGRATED CIRCUIT
RADIO AND CASSETTE RECORDER CIRCUIT
DESCRIPTION
The UTC LAG668 is a monolithic integrated circuit, designed for portable radio cassette.
FEATURES
*1-Chip IC for headphone stereo
SOP-28
BLOCK DIAGRAM
27 26 25 24 23 22 21 19 20 18 14 17 16 15 13
Power Amp Pre Amp Attenuator Motor Control
1/2 Vcc
Bias Control
1/2 Vcc V/I
Power Amp Pre Amp Attenuator
Power Amp
1
2
3
28
4
5
6
7
8
9
11
10
12
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R110-012,A
UTC LAG668
PIN CONFIGURATION
VBPRE 1IN+ 1ININFPRF IOUTPRE ATT1 CONVOL VREF 1OUTP GNDP VBP GNDMD VCON MOON
LINEAR INTEGRATED CIRCUIT
1 2 3 4 5 6 7 8 9 10 11 12 13 14
28 27 26 25 24 23 22 21 20 19 18 17 16 15
GNDPRE 2IN+ 2IN2NFPRE 2OUTPRE ATT2 PREOFF VCCPRE VCC 2OUTP MOOFF VCCMO CONT CONS
PIN NO.
1 2 3 4 5 6 7 8 9 10 11 12 13 14
SYMBOL
VBPRE 1 IN+ 1 IN 1 NFPRE 1 OUTPRE ATT 1 CONVOL VREF 1 OUTP GNDP VBP GNDMD VCON MOON
DESCRIPTION
Pre Amp Bias Voltage Channel 1 " +" Input Channel 1 " -" Input Feedback Attenuator 1 1 1 Pre Amp Output Volume Control Reference Voltage Power Amp Output Power GND Power Amp Bias Voltage Motor GND Motor Control Voltage Motor Forced Start 1
PIN NO.
15 16 17 18 19 20 21 22 23 24 25 26 27 28
SYMBOL
CONS CONT VCCMO MOOFF 2 OUTP VCC VCCPRE PREOFF ATT 2 2 OUTPRE 2 NFPRE 2 IN2 IN+ GNDPRE
DESCRIPTION
Speed Control Torqul Control Motor Power Control Motor Forced Stop Power Amp Output Supply Voltage Supply Voltage Pre Amp Off Attenuator Feedback 2 2 2 Pre Amp Output 2
Channel 2 " -" Input Channel 2 " +" Input Pre GND
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R110-012,A
UTC LAG668
PARAMETER
Supply Voltage Power Dissipation Operating Voltage Operating Temperature Storage Temperature
LINEAR INTEGRATED CIRCUIT
SYMBOL
Vcc Pd Vop Topr Tstg
ABSOLUTE MAXIMUM RATINGS(Ta=25C)
VALUE
-0.3~+7.5 750 2~5 -20~+65 -40~+125
UNIT
V mW V C C
AMPLIFIER ELECTRICAL CHARACTERISTICS(Ta=25C)
PARAMETER
Supply Current PRE-AMPLIFIER Open Loop Gain Close Loop Gain Maximum Output Voltage Total Harmonic Distortion Output Noise Voltage Input Impedance Cross Talk between CH Output Voltage when Pre-Off Output Impedance when Pre-Off Input Impedance when Pre-Off Attenuator Maximum Input Voltage Maximum Attenuation Attenuation Error Input Impedance Control Ternimal Input Impedance Power Amplifier Voltage Gain Channel Voltage Difference Maximum Output Power I Maximum Output Power II Total Harmonic Distortion Cross Talk between CH Output Noise Voltage Ripple Rejection Pre + Pulse Boost + Power Noise
SYMBOL
Icc Gvo Gvc Vom THD Von Zin CT Vooff Rooff Rloff Vimax Vamax Vaerr Zia Zicot
TEST CONDITIONS
Vin=0V, IM=0mA Vo=-10dBm, RL= Vo=-10dBm THD=10% Vout=100mVrms Vin=0, Rg=2.2k, BPF(30~20k) Vout=-10dBm Rg=2.2k, Vout=-10dBm Vin=100mVrms
MIN
TYP
18 72 42 0.6 0.05 150 22
MAX
25
UNIT
mA dB dB Vrms % Vrms k dB dB k k Vrms dB dB k k
40 0.45
44 0.5 300
18 30
-50 10 10 0.2 66 0 200 100
Vcont=Min Vcont=Max
Pout=5mW Vcont=Max THD=10%, RL=32 THD=10%, RL=16 Pout=5mW Pout=5mW Rg=2.2k, Vcont=Max Vcc=3V, 100Hz, 100mVp-p Vin=0V, Rg=2.2k, Vcont=Max* *Vcc=3V, f=1kHz, RL=16, unless otherwise specified.
GV GV Pom 1 Pom 2 THD CT Von RR Vnto
36 20 30 20 31
38 0 28 0.5 30 1 37 3
40 3
2 2 6
dB dB mW mW % dB mVrms dB mVrms
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R110-012,A
UTC LAG668
PARAMETER
Current Consumption Starting Current Reference Voltage Reference Voltage Change I Reference Voltage Change II Reference Voltage Change III Current Factor Current Factor Change I Current Factor Change II Current Factor Change III Saturation Voltage at Forced ON Input Impedance at Forced ON Pin Leakage Current at Forced OFF Input Impedance at Forced OFF Pin
LINEAR INTEGRATED CIRCUIT
SYMBOL
IMC IMS Vref Vref 1 Vref 2 Vref 3 K K1 K2 K3 VCEsa Rion IML Ricon
MOTOR ELECTRICAL CHARACTERISTICS(Ta=25C)
TEST CONDITIONS MIN
500 0.72 Vcc=2.1~5V Im=25~250mA Ta=-10~50C 32 Vcc=2.1~5V Im=25~250mA Ta=-10~50C IM=200mA, Pin 14=Vcc
TYP
3 0.8 0.05 0.01 0.01 38 0.5 0.05 0.02 5.6
MAX
5 0.87
UNIT
mA mA V %/V %/mA %/C %/V %/mA %/C V K A K
43
0.6
200 33
UTC
UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R110-012,A
UTC LAG668
TEST CIRCUIT 1
LINEAR INTEGRATED CIRCUIT
NOTE1 :
SW12,SW12 R1,R' =33k R2,R2' =5.1k R3,R3' =200k R2,R2,=5.1k C1,C' =0.1F
NOTE2 :
See figure 1/2 for SW
UTC
UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R110-012,A
UTC LAG668
TEST CIRCUIT 2
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
6
QW-R110-012,A
UTC LAG668
FIGURE 1
Item Symbol 1 AMP Supply Current Pre AMP Open Loop Gain Maximum Output Voltage Total Harmonic Distortion Output Noise Voltage Cross Talk between CH Output Voltage when PreOff Attenuator Maximum Input Voltage Maximum Attenuation Power AMP GV Voltage Gain Channel Voltage Difference Maximum Output Power I Maximum Output Power II Pom 2 a a Pom 1 a a / G V a a a a Vamax a a Vimax a a Vooff b b CT b-c c-b Von c c THD b b Vom b b Gvo b b Icc c c 2
LINEAR INTEGRATED CIRCUIT
SW No. 3,3' 4 5 6 7 8 9 10 11 12,12' 13,13'
TEST CONDITION Vcc=3V,f=1kHz,RL=16
a
b
b
a
b
b
b
a
a
a
a
Im=0mA
b
b
b
a
b
b
b
a
a
b
b
Vo=244mV
b
b
b
a
a
b
b
a
a
b
b
THD=10%
b
b
b
a
b
b
b
a
a
b
b
Vo=400mV
b
b
b
a
b
b
b
a
a
b
b
B.P.F.(30-20kHz)
b
b
b
a
b
b
b
a
a
b
b
Vo=244mV
b
a
b
a
b
b
b
a
a
b
b
Vin=100mV
c
a
b
a
b
b
b
a
a
b
a
Vr=Min, THD=10%,
c
a
b
a
b
b
b
a
a
b
a
c
a
b
a
b
b
b
a
a
b
a
Pout=5mV
c
a
b
a
b
b
b
a
a
b
a
VR=MAX
c
a
b
b
a
b
b
a
a
b
a
RL=32,THD=10%
c
a
a
a
b
b
b
a
a
b
a
RL=16,THD=10%
UTC
UNISONIC TECHNOLOGIES CO., LTD.
7
QW-R110-012,A
UTC LAG668
FIGURE 2
Item Symbol 1 POWER AMP Total Harmonic Distortion Cross Talk between CH Output Noise Voltage Ripple Rejection Pre + Pulse Boost + Power Noise Motor Current Consumption Starting Current Reference Voltage Reference Voltage Change I Reference Voltage Change II Saturation Voltage at Forced ON Input Impedance at Forced OFF Pin Ricon c c VCEsa c c Vref 2 c c Vref 1 c c Vref c c IMS c c IMC c c Vnto c c RR c c Von c c CT a-c c-a THD a c 2
LINEAR INTEGRATED CIRCUIT
SW No. 3,3' 4 5 6 7 8 9 10 11 12,12' 13,13'
TEST CONDITION
c
a
b
a
b
b
b
a
a
b
a
Pout=5mV
c
a
b
a
b
b
b
a
a
b
a
Pout=5mV
c
b
b
a
b
b
b
a
a
b
a
VR=MIN
b
a
b
a
b
b
b
a
a
b
b
VR=MAX
a
b
b
a
b
b
b
a
a
b
a
VR=MAX, BB ON
a
a
b
a
b
a
b
a
a
a
a
Im=0mA
a
a
b
a
b
a
b
a
a
a
a
a
a
b
a
b
a
b
a
a
a
a
Im=100mA
a
a
b
a
b
a
b
a
a
a
a
Im=100mA,Vcc=2.1-5V
a
a
b
a
b
a
b
a
a
a
a
Vcc=3V,Im=25-250mA
a
a
b
a
b
a
b
a
a
a
a
Im=200mA
a
a
a
a
b
a
b
a
a
a
a
*Note: a=ON, b=OFF
UTC
UNISONIC TECHNOLOGIES CO., LTD.
8
QW-R110-012,A

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