TA2120FNG TOSHIBA Bipolar Linear Integrated Circuit SIlicon Monolithic TA2120FNG Low Consumption Current Stereo Headphone Power Amplifier for Portable CD (3V Use) The TA2120FNG is a low consumption current stereo headphone power amplifier developed for portable CD players (3V). This IC has active bass boost, output limiter, input pin for beep sound. Features • Low consumption current: ICCQ = 1.9 mA (C-CUP) (typ.) • Two kinds of gain mode available: GV = 16dB or 8.5dB • Output power (VCC = 2.0 V, f = 1 kHz, THD = 10%, RL = 16 Ω) ICCQ = 2.6 mA (OCL) (typ.) Weight: 0.14 g (typ.) Po = 8 mW (typ.) • Low noise: Vno = −98dBV (typ.) • Built-in the center amplifier ON/OFF function. (Favorable for low dissipation current in the C-Couple output configuration) • Built-in active bass boost system • Built-in output limiter function • Input pin for beep sound • Excellent ripple rejection ratio • Built-in capacitor for reducing buzz noise • Built-in power mute • Built-in a power on/off switch • Operating supply voltage range (Ta = 25°C): VCC = 1.8~4.5 V 1 2006-04-19 TA2120FNG Block Diagram VCC BIAS BEEP PW MT SW SW ON ON OFF OFF BST SW OFF ON VCC 24 23 22 21 BIAS BST BST BIAS OUT SW IN BIAS 20 PW SW PW SW MT SW 19 MT TC ON OFF 18 17 16 GND BEEP IN OUTB 15 ALC BEEP Beep MT SW INB INA 14 ATT SW ALC OUTA ATT SW 13 ATT SW ADD B BST ADDA PW B PWC SW BST NF ADD OUT 1 RF IN 2 PWC SW 3 ALC DET VCC 4 PWR OUTB OUTC OUTA GND 5 6 7 8 9 RL OCL C-CUP BIAS BIAS VCC PW A PW C RL MIX ALC ALC IN DET OUT 10 11 12 ALC SW ON OFF VCC 2 2006-04-19 TA2120FNG Terminal Explanation (Terminal voltage: Typical terminal voltage at no signal with test circuit, VCC = 2.4 V, Ta = 25°C) Terminal No. Function Terminal Voltage (V) Internal Circuit Name BIAS BST NF NF of BST amplifier 0.85 10 kΩ 1 BIAS BST 24 12 kΩ ADD OUT 30 kΩ 24 BST OUT Output of BST amplifier (Terminal for filter) 0.85 1 2 kΩ ADDA BST AMP PWA ADD OUT Output of ADD amplifier (Terminal for filter) 14 24 kΩ 2 BIAS 0.85 2 24 kΩ PWB ADDB 15 3 RF IN Terminal for ripple filter circuit 1.44 13 kΩ 5 BIAS 30 kΩ 3 21 BIAS voltage 22 BIAS IN 43 kΩ 22 Filter terminal for BIAS circuit 0.85 21 0.85 3 2006-04-19 TA2120FNG Terminal No. Function Terminal Voltage (V) Internal Circuit Name VCC Center amplifier on/off switchover 4 PWC SW VCC: 5 C-CUP Center amplifier off (C-CUP) OPEN: Center amplifier on (OCL) 7 OUTC 5 VCC 6 OUTB 4 Output of center amplifier (Common terminal for OCL output configuration) 0.85 7 ⎯ ⎯ 2.4 VCC Output of power amplifier 8 ⎯ OCL 0.85 PWA ALC OUTA 14 8 INA 27 kΩ 10 ATT SW 15 INB 10 MIX OUT Output of power amplifier (Mixed) 9 PWR GND GND of power amplifier 0.85 7.5 kΩ 16 kΩ Input of power amplifier BST OUT 1.6 kΩ 14 1.6 kΩ 10 kΩ 6 0.85 ⎯ 4 0 2006-04-19 TA2120FNG Terminal No. Function Terminal Voltage (V) Internal Circuit Name 11 ALC IN Input terminal for ALC detector circuit 11 20 kΩ BIAS 0.85 20 kΩ ×4 ×7 BIAS 12 ALC DET Smoothing for ALC detection, ALC on/off switchover 12 ⎯ GND: ALC off OPEN: ALC on Power amplifier gain switchover 13 ATT SW OPEN/VCC: ATT off (GV = 16dB) 5 ⎯ 20 kΩ 13 GND: ATT on (GV = 8.5dB) 17 18 GND GND of input stage in power amplifier BEEP IN Input terminal for Beep sound It receive beep sound from microcomputer. And power amplifier outputs this beep sound. MT TC Terminal of mute smoothing Smoothing for shock noise at power muting switch over ⎯ OUTB 18 5 0 OUTA 10 kΩ 17 10 kΩ 16 0 1.4 2006-04-19 TA2120FNG Terminal No. Function Internal Circuit Name Terminal Voltage (V) VCC 5 MT SW GND/OPEN: Mute off 47 kΩ VCC: Mute on 10 kΩ Power mute switchover 19 ⎯ 19 VCC 5 47 kΩ Power on/off switchover 20 PW SW 20 ⎯ VCC: Power on GND/OPEN: Power off 5 Bst on/off switchover 23 BST SW 20 kΩ BST on: OPEN/VCC 23 ⎯ BST off: GND 6 2006-04-19 TA2120FNG Application Note 1. Beep Sound Beep sound signals from, for example, a micro controller can be received through the beep input pin 17. At power mute mode, PWA and PWB are turned off. The current of the beep signal input to been via beep amplifier is amplified at the output stage of PWA and PWB. The output from beep amplifier becomes the constant voltage source. As a result, the beep sound is output to the headphone load. If the input signal for beep (Pin 17) is not, this terminal should be fixed GND level. VCC PW SW (20pin) MT SW (19pin) OFF OFF ON ON OFF OFF BEEP IN (17pin) 200 ms 100 ms 100 ms 2. Power Switch As long as the power switch is not connect to VCC, the IC does not operate. If external noise causes malfunctions, we recommend to connect a pull-down resistor externally (Sensitivity of the power mute switch is high). 3. Center Amplifier (PWC) Terminal for PWC output is common terminal for OCL output configuration. PWC ON/OFF mode is controlled by PWC switch (Pin 4). To reduce the consumption current, PWC should be turned off by this switch. PWC SW OPEN: OCL VCC: C-Couple 4. Terminal of RF IN (3pin) Adding Capacitor (Recommendation: 10 µF) to terminal of RF IN (Pin 3), the ripple rejection ratio is improved by secondly ripple filter (In the C-Couple output configuration , this capacitor should be connected.) 7 2006-04-19 TA2120FNG 5. Threshold Voltage of Each Switches (1) PW SW, BST SW, ATT SW (2) 5 (V) 4.5 V 4.5 V 3 V19 (V) 4 H Terminal voltage V13, V20, V23 Terminal voltage MT SW 5 2 1.6 V 1 4 3 H 2 1 0.8 V 0.6 V 0.3 V L 0 0 1 2 3 Supply voltage 4 0 0 5 VCC (V) 1 L 2 3 Supply voltage PW SW (V20) 5 MT SW (V19) “H” Operating “H” Mute ON “L” Open IC OFF “L” Open Mute OFF ATT SW (V13) 4 VCC (V) BST SW (V23) “H” Open ATT ON BST ON “L” ATT OFF BST OFF 6. Exterminal capaciter These capacitors which are prevent oscillation of power amplifier and de-coupled at terminals of BIAS and VCC need to be small temperature coefficient and excellent frequency characteristic. 8 2006-04-19 TA2120FNG Absolute Maximum Ratings (Ta = 25°C) Characteristics Symbol Rating Unit Supply voltage VCC 4.5 V Output Current Io (peak) 100 mA Power dissipation PD (Note) 550 mW Operating temperature Topr −25~75 °C Storage temperature Tstg −55~150 °C Note: Derated above 25°C in the proportion of 4.4 mW/°C. Electrical Characteristics (Unless otherwise specified: VCC = 2.4 V, Rg = 600 Ω, RL = 16 Ω, f = 1 kHz, Ta = 25°C, SW1: a, SW2: a, SW3: OPEN, SW4: a, SW5: a, SW6: OPEN, SW7: ON, SW8: ON) Characteristics Quiescent supply current Consumption supply current Symbol Test Circuit ICC1 ⎯ ICC2 Min Typ. Max IC OFF (C-Couple) SW1: b, SW2: b, SW3: ON ⎯ 0.1 5 ⎯ IC OFF (OCL) SW1: b, SW2: b ⎯ 0.1 5 ICC3 ⎯ MUTE ON (C-Couple) SW2: b, SW3: ON ⎯ 1 2 ICC4 ⎯ MUTE ON (OCL) SW2: b ⎯ 1.7 3 ICC5 ⎯ No signal (C-Couple) SW3: ON ⎯ 1.9 3.5 ICC6 ⎯ No signal (OCL) ⎯ 2.6 4.5 ⎯ Po = 0.5 mW + 0.5 mW (C-CUP), SW3: ON ⎯ 6.6 ⎯ Po = 0.5 mW + 0.5 mW (OCL) ⎯ 12.1 ⎯ ICC7 Power amplifier stage ICC8 Test Condition Unit µA mA mA Voltage gain (1) GV1 ⎯ Vo = −22dBV, SW6: GND 5.5 8.5 10.5 dB Voltage gain (2) GV2 ⎯ Vo = −22dBV 14 16 18 dB Pomax ⎯ THD = 10%, VCC = 2.0 V 5 8 ⎯ mW Total harmonic distortion THD ⎯ Vo = −12.2dBV ⎯ 0.1 0.5 % Output noise voltage Vno ⎯ Rg = 600 Ω, Filter: IHF- A, SW5: b ⎯ −98 −92 dBV Crosstalk CT ⎯ Vo = −12.2dBV 24 40 ⎯ dB Output power RR ⎯ VCC = 1.8V, fr = 100 Hz, Vr = −20dBV 69 75 ⎯ dB Mute attenuation MUTE ⎯ Vo = −12.2dBv, SW2: b 80 90 ⎯ dB Beep voltage VBEEP ⎯ V Beep IN = 0dBV, SW2: b −56 −51 −46 dBV Bst ⎯ Vo = −30dBV, f = 100 Hz, SW7: ON → OPEN 9 11.5 14 dB VALC ⎯ Vin = −20dBV, SW8: OPEN −41.5 −39.5 −37.5 dBV Ripple rejection ratio Boost gain Output limiter level 9 2006-04-19 TA2120FNG Test Circuit (b) (a) SW1 SW2 1 µF (b) 10 kΩ 600 Ω 600 Ω IS1588 10 kΩ 1 µF (a) 22 µF 10 µF 0.22 µF SW7 VCC 10 kΩ VCC BIAS 1 µF Rg = 600 Ω Rg = 600 Ω (a) (a) SW5b (b) (b) SW5a SW6 24 23 22 21 20 19 18 17 16 15 14 13 BST OUT BST SW BIAS IN BIAS PW SW MT SW MT TC BEEP IN GND INB INA ATT SW TA2120FNG MIX OUT ALC IN ALC DET 1 2 3 4 5 6 7 8 9 10 11 12 0.1 µF 4.7 kΩ 0.1 µF * 220 µF (a) (a) (b) (b) 16 Ω VCC 220 µF BIAS 16 Ω BIAS SW3 2.2 µF PWR GND 1 µF* OUTA 16 Ω OUTC 16 Ω OUTB 4.7 kΩ 0.1 µF * VCC 22 µF PW-C SW 10 µF RF IN 0.1 µF ADD OUT 2.2 µF BST NF SW8 *: Monolithic ceramic capacitor 10 2006-04-19 TA2120FNG Application Circuit 1 (C-Couple mode) 1 µF 1 µF OFF ATT SW 100 kΩ 0.1 µF ON PW MT SW SW OFF OFF 10 µF ON 1 µF 0.1 µF BEEP VCC Vol: 10 kΩ 10 µF 0.22 µF ON VCC OFF ON 100 kΩ BIAS DAC OUT BST SW 24 23 22 21 20 19 18 17 16 15 14 13 BST OUT BST SW BIAS IN BIAS PW SW MT SW MT TC BEEP IN GND INB INA ATT SW TA2120FNG ALC IN ALC DET 4 5 6 7 8 9 10 11 12 C-CUP VCC VCC RL ALC SW ON 22 µF MIX OUT 220 µF PWR GND 0.1 µF * OUTA 4.7 Ω BIAS OUTC 0.1 µF * BIAS OUTB 4.7 Ω 3 VCC 220 µF 2 PW-C SW 1 µF 1 10 µF RF IN 0.1 µF ADD OUT 2.2 µF BST NF OFF RL *: Monolithic ceramic capacitor PWR AMP GAIN ATT ON: GV = 8.5dB ATT OFF: GV = 16dB 11 2006-04-19 TA2120FNG Application Circuit 2 (OCL mode) 1 µF 1 µF OFF ATT SW 100 kΩ 0.1 µF ON PW MT SW SW OFF OFF 10 µF ON 1 µF 0.1 µF BEEP VCC Vol: 10 kΩ 10 µF 0.22 µF ON VCC OFF ON 100 kΩ BIAS DAC OUT BST SW 24 23 22 21 20 19 18 17 16 15 14 13 BST OUT BST SW BIAS IN BIAS PW SW MT SW MT TC BEEP IN GND INB INA ATT SW TA2120FNG BIAS MIX OUT ALC IN ALC DET 4 5 6 7 8 9 10 11 12 OCL VCC RL RL 0.1 µF ALC SW ON 22 µF PWR GND 0.1 µF * OUTA 4.7 Ω BIAS OUTC 1 µF * 3 OUTB 0.1 µF * 2 VCC 4.7 Ω 1 PW-C SW 1 µF RF IN 0.1 µF ADD OUT 2.2 µF BST NF OFF *: Monolithic ceramic capacitor PWR AMP GAIN ATT ON: GV = 8.5dB ATT OFF: GV = 16dB 12 2006-04-19 TA2120FNG Characteristics (Unless otherwise specified: VCC = 2.4 V, RL = 16 Ω, Rg = 600 Ω, f = 1 kHz, Ta = 25°C, OCL, ATT OFF) ICC – VCC ICC – Po C-CUP (mA) 100 ICC 4 Consumption supply current Quiescent supply current ICC (mA) 5 3 ICC (BST ON) 2 ICC3 1 ICC5 (MUTE ON) VCC = 2.4 V 50 f = 1 kHz RL = 16 Ω 30 A/Bch IN 10 5 3 1 0.5 0.03 0 1.5 2.5 3.5 C-CUP 0.1 0.3 1 3 10 4.5 Output power Po (mW) Supply voltage VCC (V) ICC – VCC IC – P o OCL (mA) 100 ICC 4 ICC (BST ON) Consumption supply current Quiescent supply current ICC (mA) 5 3 ICC6 2 ICC4 (MUST ON) 1 50 f = 1 kHz RL = 16 Ω 30 A/Bch IN 10 5 3 1 0.5 0.03 0 1.5 2.5 3.5 OCL VCC = 2.4 V 0.1 0.3 1 3 10 4.5 Output power Po (mW) Supply voltage VCC (V) VDC – VCC (BIAS, OUTA/B/C) OCL Po – VCC 50 (mW) 2.0 Output power 1.5 Output DC voltage OCL 100 30 Po VDC (V) 2.5 1.0 10 5 3 0.5 THD = 10% A/Bch IN 1 0 1.5 2.5 Supply voltage 3.5 VCC 4.5 1.5 (V) 2.5 Supply voltage 13 3.5 VCC 4.5 (V) 2006-04-19 TA2120FNG THD – Po CT – f OCL VCC = 2.4 V Vo = −20dBV 10 RL = 16 Ω 0 A/Bch IN CT (dB) 5 3 1 10 kHz 0.5 0.3 −10 −20 −30 −40 1 kHz −50 0.1 100 Hz 0.05 0.1 0.3 1 3 10 30 −60 10 100 30 100 Output power Po (mW) BST OFF −40 Frequency 10k 30k ALC OFF −40 6 −50 4 V VO o ALC ON −50 −40 −30 BEEP fr = 100 Hz (dBV) −60 BST OFF −80 −90 Supply voltage 3.5 VCC 0 0 OCL −60 −70 −80 −90 2.5 −10 −50 ATT OFF 1.5 −20 −40 Beep output voltage (dB) PR −60 OCL Vr = −20dBV −70 −70 2 ALC ON THD Vin (dBV) RR – VCC −50 10 8 −70 −80 100k 12 ALC OFF f (Hz) −30 −40 f (Hz) 14 −60 3k 100k (%) −30 1k 30k THD (dBV) −30 Output voltage BST ON −20 VO (dBV) VO −20 300 10k −10 Vin = −46dBV 100 3k 0 VCC = 2.4 V 30 1k Vo, THD – Vin OCL ATT OFF Output voltage 300 Frequency Vo – f −10 Ripple rejection ratio OCL 10 Cross talk Total harmonic distortion THD (%) 20 −100 −16 4.5 (V) fBEEP = 400 Hz Rectangle wave −14 −12 −10 −8 Beep input voltage 14 −6 BEEP VIN −4 −2 0 (dBV) 2006-04-19 TA2120FNG ICC – Ta VDC – Ta 2.5 VDC (V) 5 1.5 3 Output DC voltage ICC (mA) ICC6 ICC4 1 0 −50 2.0 0 Ambient temperature 50 Ta 1.0 0.5 0 −50 100 (°C) 0 Ambient temperature 15 50 Ta 100 (°C) 2006-04-19 TA2120FNG Package Dimensions Weight: 0.14 g (typ.) 16 2006-04-19 TA2120FNG RESTRICTIONS ON PRODUCT USE 060116EBA • The information contained herein is subject to change without notice. 021023_D • 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. 021023_A • 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. 021023_B • The products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations. 060106_Q • The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of TOSHIBA or others. 021023_C • The products described in this document are subject to the foreign exchange and foreign trade laws. 021023_E About solderability, following conditions were confirmed • Solderability (1) Use of Sn-37Pb solder Bath · solder bath temperature = 230°C · dipping time = 5 seconds · the number of times = once · use of R-type flux (2) Use of Sn-3.0Ag-0.5Cu solder Bath · solder bath temperature = 245°C · dipping time = 5 seconds · the number of times = once · use of R-type flux 17 2006-04-19