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TA2092AN
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA2092AN
Power Driver IC for CD Player
The TA2092AN is a power driver IC developed for CD players. This IC have built-in 4 channel BTL power amplifiers which drives focus-coil, tracking-coil for 3-beam pick-up head, disc motor and feed motor.
Features
* * * * * * 4 channel BTL linear drivers Fixed voltage gain: GV = 15.5dB (typ.) High output power Thermal shutdown circuit Input reference voltage short protection Operating voltage range: VCC (opr) = 4.5~10.0 V (Ta = 25C) Weight: 1.2 g (typ.)
Block Diagram
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Terminal Explanation
Terminal No. 1 Symbol Function Equivalent Circuit
Power GND PW GND Connected to substrate. pin 1, 12, 13, 24 are connected inside. OUT (-) 1 Inverted output for CH1 Supply terminal of output stage for CH1 Supply terminal of output stage are not connected to other channel terminal.
2
3
PVCC1
4
OUT (+) 1 Non-inverted output for CH1
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VIN1
Input for CH1 Not biased inside
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VRI
Input reference voltage Under condition of VRI 1.1 V, internal bias circuit is shut off. No signal input condition: VRI = VIN
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VCI
Output reference voltage VOUT = VCI = (VCC-VF) /2
8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
VIN2
Input for CH2
OUT (+) 2 Non-inverted output for CH2 PVCC2 Supply terminal of output stage for CH2 Same as channel 1
OUT (-) 2 Inverted output for CH2 PW GND Power GND PW GND Power GND OUT (-) 3 Inverted output for CH3 PVCC3 Supply terminal of output stage for CH3 Same as channel 1
OUT (+) 3 Non-inverted output for CH3 VIN3 S GND S VCC VIN4 Input for CH3 Supply terminal of small signal GND Small signal GND Input for CH4
OUT (+) 4 Non-inverted output for CH4 PVCC4 Supply terminal of output stage for CH4 Same as channel 1
OUT (-) 4 Inverted output for CH4 PW GND Power GND
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Maximum Ratings (Ta = 25C)
Characteristics Supply voltage Power dissipation Operating temperature Storage temperature Symbol VCC PD (Note 1) Topr Tstg Rating 14 (2) (Note 2) -30~85 -55~150 Unit V W C C
Note 1: Mounted on 50 mm x 50 mm x 1.6 mm size board with copper area 60 % over. Note 2: Derated above Ta = 25C, in the proportion of 62.5 mW/C.
Electrical Characteristics (unless otherwise specified, VCC = 8 V, RL = 5 , f = 1 kHz, VBIAS = 1.65 V, Rg = 3.3 k, Ta = 25C)
Characteristics Operating voltage Quiescent current Input offset current VRI terminal offset current Output offset voltage Reference output voltage Maximum output voltage Voltage gain Frequency response Total harmonic distortion Slew rate Cross talk Ripple rejection ratio Thermal shut down temperature VRI~GND short protection voltage Symbol VCC ICCQ IIN I10 VOS VOUT VOM GV fc THD S.R. C.T. R.R. TTSD VRI OFF Test Circuit VIN = 100 mV Vin = 100 mVrms Vin = 100 mVrms Vout = 2 Vp-p Vout = 1 Vrms frip = 100 Hz, Vrip = 100 mVrms Chip temperature Test Condition Vin = 0, RL = OPEN VIN = 1.65 V VRI = 1.65 V Rg = 3.3 k Min 4.5 30 -68 7 14.5 0.9 Typ. 8.0 50 0 30 3.6 8 15.5 100 -50 1.0 -60 -60 150 1.1 Max 10.0 70 200 60 68 16.5 1.3 Unit V mA nA A mV V Vp-p dB kHz dB V/s dB dB C V
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Test Circuit
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Precaution Use
* Input stage * Input stages are consisted of differential circuit of PNP Tr, and have built-in base current compensation circuit. * Built-in driver * Each channel driver consists of BTL configuration linear amplifier. Voltage gain is fixed: GV = 15.5dB (typ.) Voltage loss for output stage is 2 VBE = VCE (sat) for positive cycle, VCE (sat) for negative cycle, because of no-bootstrap circuit. So, output DC voltage is designed as less than 1/2 VCC. * VRI terminal * VRI is reference voltage terminal for input signal. If reference voltage from servo IC drop less than 1.1 V, protection circuit operates and shut off bias circuit inside. This operation is to prevent load from moving undesireably in case of VRI drop for accident or some reason. * VCI terminal * Output DC voltage is determined by circuit of this terminal inside as; VCI = VOUT (DC) = (VCC-VF) /2 * Output signal dynamic range is depend on VCC. On the other hand, input signal dynamic range is determined by VRI as mentioned and voltage gain is fixed inside. So, maximum output voltage does not increase as VCC increases. * Because of BTL configuration, Ripple Rejection Ratio does not improve not much when capacitor is connected to VCI terminal to GND. * GND * Large signal GND is for output stage and small signal GND is for stages from input circuit to pre-output stage. * These GND pins are not connected inside. * The heat of power dissipation is transferred to PCB, through these PW-GND Pin, because, 1, 12, 13, 24 pin are connected each other and to substrate of Pellet to connected copper foil area as large as possible. * Oscillation preventive capacitor * We recommend to use the capacitor of 0.1 F, between each output terminals. But perform the temperature test to check the oscillation allowance, since the oscillation allowance is varied according to the causes described below. 1) Supply voltage 2) Ambient temperature 3) Load impedance 4) Capacity value of condenser 5) Kind of condenser 6) Layout of Printed board * * We recommend to connect Pass-condenser, which is about 47 to 100 F between VRI terminal and GND. VCI terminal is recommend to use "OPEN".
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Package Dimensions
Weight: 1.2 g (typ.)
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RESTRICTIONS ON PRODUCT USE
000707EBF
* TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc.. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. * This product generates heat during normal operation. However, substandard performance or malfunction may cause the product and its peripherals to reach abnormally high temperatures. The product is often the final stage (the external output stage) of a circuit. Substandard performance or malfunction of the destination device to which the circuit supplies output may cause damage to the circuit or to the product. * The products described in this document are subject to the foreign exchange and foreign trade laws. * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. * The information contained herein is subject to change without notice.
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