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BA5962FVM
Optical disc ICs
Power driver for CD player
BA5962FVM
BA5962FVM is 1ch BTL power driver IC for CD / DVD. MSOP8 package enables the smallest configuration. This IC enables reduction of external parts, built-in level shift circuit.
!Applications CD player
!Features 1) 1ch BTL driver for CD / DVD. 2) MSOP8 package enables the smallest configuration. 3) Built in level shift circuit. 4) Built in thermal-shut-down circuit.
!Absolute maximum ratings (Ta=25C)
Parameter Power supply voltage Power dissipation Operating temperature Storage temperature
PCB (70mmx70mmx1.6mm, glass epoxy) mounting. Reduce power by 4.4mW for each degree above 25C.
Symbol VCC Pd Topr Tstg
Limits 18 0.55 -35~+85 -55~+150
Unit V W C C
!Recommended operating conditions (Set the power supply voltage taking allowable dissipation into considering)
Parameter
Power supply voltage
Symbol VCC
Min. 3
Typ. 5
Max. 10
Unit V
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BA5962FVM
Optical disc ICs
!Block diagram
8 7 6 5
+ LEVEL SHIFT
-
STAND-BY
+-
25k 50k
1
2
3
4
TSD : Thermal shut down
!Pin descriptions
Pin No. 1 2 3 4 Pin name STBY BIAS IN 1 IN 2 Bias input Driver input 1 (Low gain) Driver input 2 (High gain) Functions Stand-by control input Pin No. 5 6 7 8 Pin name GND OUT- OUT+ VCC GND Driver negative output Driver positive output Power supply input Functions
!Input output circuits
Driver output BIAS input
VCC VCC positive output 7pin 10k 100k VCC negative output 6pin 50k 2pin 100k 10k 25k
Driver input
VCC
Stand-by control input
VCC Pre VCC 50k 3pin 1pin 100k VCC
25k 4pin
100k
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BA5962FVM
Optical disc ICs
!Electrical characteristics (unless otherwise noted, Ta=25C, VCC=5V, VBIAS=1.65V, RL=50)
Parameter Quiescent current without signal Input voltage range Output offset voltage Maximum output voltage amplitude Closed circuit gain 1 (Input IN1) Closed circuit gain 2 (Input IN2) Srand-by ON voltage Srand-by OFF voltage Bias terminal voltage drop mute ON-level voltage Bias terminal voltage drop mute OFF-level voltage VINR VOOF VOM GVC1 GVC2 VSTON VSTOFF VBMON VBMOFF 0 -40 3.7 10 16 - 2.0 - 1.0 - 4.1 12 18 - - - - VCC 40 - 14 20 0.5 - 0.4 - V mV V dB dB V V V V VIN=1.35V, 1.95V VIN=1.35V, 1.95V VIN=BIAS=1.65V Fig.1 Fig.1 Fig.1 Fig.1 Fig.1 Fig.1 Fig.1 Fig.1 Fig.1 Symbol IQ Min. - Typ. 3 Max. 6 Unit mA Conditions Measuring circuit Fig.1
This product in not designed for protection against radioactive rays.
!Measuring circuit
+ VO V RL + A 50
VCC=5V IQ
0.1 8 7 6 5
+ LEVEL SHIFT
-
STAND-BY
+-
25k 50k
1
2 VIN1
3 VIN2
4
VST
VBIAS =1.65V
VIN1
VIN2
Fig.1
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BA5962FVM
Optical disc ICs
1. Switch table
Symbol IQ Voof VOM 1 VOM 2 GVC 1 GVC 2 VSTOFF VSTON Switch VIN 1 VIN 2 OFF ON ON OFF ON OFF ON ON OFF ON OFF ON OFF ON OFF OFF Input RL OFF ON ON ON ON ON ON ON VIN - 1.65V 1 1 0.3V 0.3V 5V 5V VST 2.0V 2.0V 2.0V 2.0V 2.0V 2.0V 0.5V 2.0V 1 VIN=0V and 5V 1 VIN=0V and 5V VIN=1.35V and 1.95V VIN=1.35V and 1.95V Measuring point IQ VO VO VO VO VO VO VO
!Application example
LOAD
M
8 7 6 5
BA5962FVM
1
2
3
4
STAND-BY
BIAS
SIGNAL
SERVO PREAMP
Fig.2
!Operation notes 1. A thermal-shutdown circuit (over-temperature protection circuit) is built in to prevent the IC from thermal breakdown. Use the IC under the thermal loss allowed to the package. In case the IC is left running over the allowable loss, the junction temperature rises, and the thermal-shutdown circuit works at the junction temperature of 160C (typ.) (the outputs of the driver is turned off). When the junction temperature drops to 135C (typ.), the IC start operating again. 2. When stand-by control terminal (Pin 1) drops below 0.5V, stand-by mode is established. Make sure that under normal operating conditions, this pin at 2.0V or above. 3. If VCC (Pin 8) drops below 2.5V (typ.), the driver is turned off. When the voltage exceeds 2.7V (typ.) the driver returns to its previous state.
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BA5962FVM
Optical disc ICs
4. If the bias pin (Pin 2) drops below 0.7V, the output is muted. Make sure that under normal operating conditions, this pin is at 1.0V or above. 5. The output is muted in the event of a thermal shut down, mute-on, or a bias and VCC voltage drop. Only the driver is muted. When muted, the internal bias voltage of the output pin becomes roughly (VCC-Vf) / 2). (Vf=0.7V) 6. Please connect a bypass capacitor (0.1F) across the supply voltage lines close to the IC pins. 7. When a capacitance load is connected to the OP amplifier output, the amplifier phase margin decreases, which causes the peak or oscillation. When connecting such load, insert a resistance in series between the output and the capacitance load and take a full consideration for frequency characteristics to prevent problem during practical use. 8. Do not short-circuit between any output pin and supply pin (supply fault) or ground (ground fault), or between any output pins (load short-circuit). When mounting the IC on the circuit board, be extremely cautions about the orientation of the IC. If the orientation is mistaken, the IC may break down, and produce smoke in some cases.
!Electrical characteristics curve
0.6 On less than 3% (percentage occupied by copper foil), 70mmx70mm, t=1.6mm glass epoxy mounting.
POWER DISSIPATION : Pd (W)
0.4
0.2
0
0
25
50
75
100
125
150
175
AMBIENT TEMPERATURE : Ta (C)
Fig.3 Power dissipation
!External dimensions (Units : mm)
2.90.1
8 5
4.00.2
2.80.1
1
4
0.475
0.9Max. 0.750.05 0.080.05
0.22-0.04 0.65 0.08 S
+0.05
0.290.15 0.60.2
+0.05 0.145-0.03
0.08 M
MSOP8
5/5

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