TDA7469 LOW VOLTAGE ANALOG AUDIO PROCESSOR WITH HEADPHONE POWER AMPLIFIER 1 ■ ■ ■ ■ ■ ■ ■ ■ ■ 2 FEATURES Figure 1. Package 2 STEREO INPUT 1 STEREO OUTPUT TREBLE BOOST BASS CONTROL BASS AUTOMATIC LEVEL CONTROL VOLUME CONTROL IN 1dB STEPS MUTE STAND-BY FUNCTION SOFTWARE CONTROLLED ALL FUNCTION ARE PROGRAMMABLE VIA SERIAL BUS SSOP24 Table 1. Order Codes DESCRIPTION Part Number Package TDA7469 SSOP24 TDA746913TR Tape & Reel The AC signal setting is obtained by resistor networks and switches combined with operational amplifiers. The TDA7469 is a volume tone (bass and treble) processor for quality audio applications in Low voltage supply portable systems. Thanks to the used BIPOLAR/CMOS Technology, Low Distortion, Low Noise and DC stepping are obtained. Bass ALC (Automatic Level Control) function can be adjusted by a dedicated pin. The control of all the functions is accomplished by serial bus. Figure 2. Block Diagram 5.6K 3.3nF MUX_R 0.47µF 68nF 68nF BASSI-R TREBLE-R BASSO-R IN1-R 25K gm RB +6dB ÷ 0dB 25K 16Ω or 32Ω 0.47µF VOLUME IN2-R 25K BASS TREBLE OUT-R x1 +6dB ÷ -63dB 220µF PGND-R SUPPLY 25K PVS-R BASS_ALC CONTROL 0.47µF ALC HALF_WAVE RECTIFIER SCL I2C BUS DECODER + LATCHES SDA IN1-L 0.47µF PVS-L SUPPLY 25K PGND-L 25K +6dB ÷ -63dB 220µF x1 0.47µF VOLUME IN2-L 25K TREBLE 16Ω or 32Ω +6dB ÷ 0dB RB gm 25K D00AU1234 OUT-L BASS TREBLE-L MUX_L 3.3nF VREF BASSI-L 68nF 68nF BASSO-L VS SUPPLY GND CREF 22µF 5.6K December 2004 REV. 3 1/13 TDA7469 Table 2. ABSOLUTE MAXIMUM RATINGS Symbol VS Parameter Operating Supply Voltage Tamb Operating Ambient Temperature Tstg Storage Temperature Range ESD Maximum ESD on PINS 11 and 12 (HBM) Value Unit 5.5 V 0 to 70 °C -55 to 150 °C 500 V Value Unit 85 °C/W Figure 3. PIN CONNECTIONS (Top view) VS 1 24 CREF IN1-L 2 23 IN1-R IN2-L 3 22 IN2-R MUX-L 4 21 MUX-R TREBLE-L 5 20 TREBLE-R BASSI-L 6 19 BASSI-R BASSO-L 7 18 BASSO-R PGND-L 8 17 PGND-R OUT-L 9 16 OUT-R PVS-L 10 15 PVS-R SDA 11 14 ALC SCL 12 13 GND D01AU1246 Table 3. THERMAL DATA Symbol Rth j-pin Parameter Thermal Resistance Junction-pins Table 4. QUICK REFERENCE DATA Symbol Parameter Min. Typ. Max. Unit VS Supply Voltage 1.8 2.4 5.0 V Vps Power Supply Voltage 1.5 2.4 5.0 V 5 10 Pomax Maximum output power THD 10% THD Total Harmonic Distortion V = 0.1Vrms f = 1KHz 0.5 % -63 6 dB Treble Control 0 12 dB Bass Control 0 14 dB Volume Control (1dB step) Mute Attenuation 2/13 0.1 mW 90 dB TDA7469 Table 5. ELECTRICAL CHARACTERISTICS (refer to the test circuit Tamb = 25°C, VS =2.4V, all controls flat (G = 0dB), f = 1KHz, unless otherwise specified) Symbol Parameter Test Condition Min. Typ. Max. Unit SUPPLY VS Supply Voltage 1.8 2.4 5.0 V VPS Supply Voltage 1.5 2.4 5.0 V ISQ Supply Current pin 1 All circuit stop 40 100 µA IPSQ Quiescent Current pin10 + pin15 Headphone Amp. OFF 1 10 µA IS Po = 0.5mW +0.5mW 8 mA IPS Po = 0.5mW +0.5mW 15 mA INPUT STAGE RIN Input Resistance 35 65 KΩ AIN Input Attenuation Range 0 50 6 dB -63 6 dB VOLUME CONTROL CRANGE Control Range AMAX Max. Attenuation 61 63 65 dB ASTEP Step Resolution 0.5 1 1.5 dB GMAX Max. Gain Gstep Step Resolution 2 dB Muxout Load Resistence 10 KΩ 14 dB R1 6 dB BASS CONTROL Gb Control Range RB Internal Feedback Resistance Max. Boost/on 75.6 100.8 126 KΩ TREBLE CONTROL Gt Control Range Rt Internal Resistance Max. Boost 12 dB 25 KΩ HEADPHONE OUTPUTS Gout Pomax Output Gain Max Output Power 0 dB 10 mW All gains = 0dB Output Muted BW = 20Hz to 20KHz flat 5 10 µV µV Av = 0, Vin = 0.1Vrms 0.1 THD = 10% 5 GENERAL ENO THD SC Output Noise Distortion Channel Separation Left/Right % dB dB RR1 Ripple Rejection VS, f = 100Hz -70 RR2 Ripple Rejection PVS, f = 100Hz -75 Total Tracking Error 0.5 50 0 dB 1 dB BUS INPUTS VIL Input Low Voltage VIH Input High Voltage 0.5 IIN Input Current VIN = 0.4V VO Output Voltage (ACK) IO = 1.6mA 1.9 -5 V V 5 µA 0.4 V Note: 1. BASS and TREBLE response: The center frequency and the response quality can be chosen by the external circuitry. 3/13 TDA7469 3 DATA BYTES Address = (HEX) 10001000 3.1 FUNCTION SELECTION: The first byte (subaddress) Table 6. MSB LSB D7 D6 D5 D4 D3 D2 D1 D0 SUBADDRESS X X X B 0 0 0 0 VOLUME X X X B 0 0 0 1 TREBLE & BASS X X X B 0 0 1 0 INPUT & MUTE X X X B 0 0 1 1 STAND-BY & OTHERS X X X B 0 1 0 0 BASS ALC1 X X X B 0 1 0 1 BASS ALC2 LSB VOLUME D1 D0 GAIN 0 0 6 0 1 4 1 0 2 1 1 0 B = 1 incremental bus; active B = 0 no incremental bus ;X = indifferent 0,1 Table 7. VOLUME MSB D7 D6 D5 D4 D3 D2 1 dB STEPS 0 0 0 0 0 0 1 -1 0 1 0 -2 0 1 1 -3 1 0 0 -4 1 0 1 -5 1 1 0 -6 1 1 1 -7 8 dB STEPS 0 0 0 0 0 1 -8 0 1 0 -16 0 1 1 -24 1 0 0 -32 1 0 1 -40 1 1 0 -48 1 1 1 -56 VOLUME : +6 x -63dB 4/13 0 TDA7469 Table 8. TREBLE & BASS MSB D7 LSB D6 D5 D4 D3 D2 D1 D0 TREBLE 0 0 12dB 0 1 8dB 1 0 4dB 1 1 0dB BASS 0 0 0 14dB 0 0 1 12dB 0 1 0 10dB 0 1 1 8dB 1 0 0 6dB 1 0 1 4dB 1 1 0 2dB 1 1 1 0dB BASS ALC 0 ALC: VOLUME mode 1 ALC: BASS mode 1 ALC: fc shift 0 ALC: fc nonshift 1 ALC: feedback gain x2 0 ALC: feedback gain x 1 Table 9. INPUT SELECT & MUTE MSB D7 LSB D6 D5 D4 D3 D2 D1 D0 INPUT SELECT 0 0 IN1 (0dB) 0 1 IN1 (-6dB) 1 0 IN2 (0dB) 1 1 IN2 (-6dbB) MUTE 1 Input Mute ON 0 Input Mute OFF 1 Output SoftMute ON 0 Output SoftMute OFF 1 Output Mute ON 0 Output Mute OFF HEADPHONE AMP. ST-BY 1 Headphone Amp. OFF 0 Headphone Amp. ON 5/13 TDA7469 Table 10. STAND_BY & OTHERS MSB D7 D6 D5 D4 D3 D2 LSB D0 D1 STAND-BY ALL Circuits Stop ALL Circuits Work SOFT MUTE CAPACITOR Independent Capacitor Share ALC Capacitor REFERENCE LEVEL adaptive: (VDD-0.7)/2 1.10V 0.85V 0.55V 0.45V ZEROCROSS MODE ON OFF Zerocross Detect Point: Volume Zerocross Detect Point: Bass CREF STAND-BY CREF Circuit Stop CREF Circuit Work 1 0 1 0 0 0 1 1 1 0 0 0 0 0 1 0 1 1 0 1 0 1 0 Table 11. BASS ALC1 MSB D7 D6 D5 D4 D3 D2 D1 LSB D0 1 0 1 0 1 0 0 0 1 1 0 0 1 1 0 1 0 1 D4 D3 0 1 0 1 BASS ALC ALC MODE ON OFF DETECTOR ON OFF RELEASE CURRENT CIRCUIT ON OFF ATTACK TIME RESISTOR 12.5KΩ 25KΩ 50KΩ 100KΩ THRESHOLD THRESHOLD1 THRESHOLD2 THRESHOLD3 THRESHOLD4 Table 12. BASS ALC2 MSB D7 D6 D5 D2 D1 LSB D0 1 0 1 0 6/13 BASS ALC ALC FULL FEEDBACK CURR. ON OFF BIG RELEASE CURRENT ON OFF TDA7469 Figure 4. Typical Application Circuit (SSO24) VS VS C1 10µF 24 IN1-L C4 0.47µF IN2-L C22 22µF IN1-L IN2-L MUX-L MUX-L TREBLE-L 2 23 3 22 4 21 5 20 C8 10µF IN1-R C20 0.47µF C6 BASSO-L 68nF MUX-R PGND-L 7 18 BASSO-R 17 8 5.6K PGND-R C15 0.1µF PVS-R 14 R4 SDA SCL 11 12 0.1µF Jumper J1 ALC C14 0.47µF 13 GND 9 16 OUT-R OUT-L C10 C16 10µF PVS-R 15 VDD 4.7 C18 68nF R8 C17 68nF 10 R6 R9 10K BASSI-R PVS-L SCL MUX-R TREBLE-R C9 0.1µF SDA IN2-R 19 BASSI-L PVS-L R3 IN2-R C21 0.47µF C19 3.3nF 6 5.6K IN1-R C5 3.3nF C6 68nF R2 CREF C2 0.1µF C3 0.47µF R1 10K 1 STEREO MINI JAC C11 220µF OUT-L C12 220µF Jumper J2 C13 0.1µF R7 4.7 OUT-R D00AU1243 For listering tests 7/13 TDA7469 Figure 5. THD+Noise vs Amplitude @VCC 2.5V, Rload 16Ω THD (%) Figure 7. THD+Noise vs Amplitude @VCC 2.5V, Rload 32Ω THD (%) 10 5 0.5 5 2 2 1 10 Vcc = 2.5V Rload = 16ohm f = 1KHz 1 0.5 0.2 0.2 Vcc = 2.5V Rload = 32ohm f = 1KHz 0.1 0.1 0.05 0.05 0.02 0.02 0.01 0.01 0.005 0.005 0.002 0.002 0.001 0.001 5m 10m 15m 20m 25m 2m 30m 4m 6m 8m 10m 12m 14m 16m 18m 20m Pout (W) Pout (W) Figure 6. THD+Noise vs Amplitude @VCC 2.8V, Rload 16Ω Figure 8. THD+Noise vs Amplitude @VCC 2.8V, Rload 32Ω THD (%) THD (%) 10 5 10 5 2 2 1 1 Vcc = 2.8V Rload = 16ohm f =1KHz 0.5 0.2 0.5 0.2 0.1 0.1 0.05 0.05 0.02 0.02 0.01 0.01 0.005 0.005 0.002 0.002 0.001 5m 10m 15m Pout (W) 8/13 20m 25m 30m 35m Vcc = 2.8V Rload = 32ohm f = 1KHz 0.001 5m 10m 15m Pout (W) 20m 25m 30m TDA7469 Figure 9. TDA7469 Components Layout Figure 10. TDA7469 P.C. Board Layout (Top view) 9/13 TDA7469 Figure 11. TDA7469 P. C. Board (Backside view) 10/13 TDA7469 Figure 12. SSO24 Mechanical Data & Package Dimensions mm inch OUTLINE AND MECHANICAL DATA DIM. MIN. TYP. A MAX. MIN. TYP. 2.00 A1 0.05 A2 1.65 B (2) MAX. 0.079 0.002 1.85 0.060 0.079 0.22 0.38 0.009 0.015 C 0.09 0.25 0.003 0.01 D (1) 7.9 8.2 8.5 0.31 0.32 0.33 E 7.4 7.8 8.2 0.29 0.30 0.32 E1 (1) 5.0 5.3 5.6 0.20 0.21 0.22 e L 1.75 0.65 0.55 L1 0.75 0.025 0.95 0.022 1.25 k 0.029 0.004 0.05 0˚ (min), 4˚ (typ), 8˚ (max) ddd 0.1 0.004 (1) “D and E1” dimensions do not include mold flash or protusions, but do include mold mismatch and are mesaured at datum plane “H”. Mold flash or protusions shall not exceed 0.20mm in total (both side). (2) “B” dimension does not include dambar protusion/intrusion. SSO24 Shrink Small Outline Package DATUM PLANE H 0.25mm SEATING PLANE C GAGE PLANE A2 A K B e A1 ddd C C L E1 L1 D 24 13 E 1 1 2 SSO24ME 0053237 C 11/13 TDA7469 Table 13. Revision History Date Revision July 2001 1 First Issue July 2004 2 Removed packages and new style-sheet 15 December 2004 3 Modified value Pomax typ. from 8 to 10mW and add. ESD in table 2 12/13 Description of Changes TDA7469 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. 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