CXA2566M Headphone Stereos Description This is a bipolar IC designed for headphone stereos. It provides functions such as automatic volume limiter control, bass boost, standby, headphone driver and others. 16 pin SOP (Plastic) Features • Low quiescent current (3.2mA at 2.4V Vcc ) • Thermal shutdown circuitry at 120°C • Headphone driver (30mW at 2.4V Vcc for 16Ω load) • Bass boost function (9dB) • Standby function • Wide operating voltage (1.8 to 5V) • Automatic volume limiter control (100mVrms) • Uses SOP 16 pin package Application Headphone Stereos Structure Bipolar silicon monolithic IC Absolute Maximum Ratings (Ta = 25°C) • Supply voltage VCC 7 • Operating temperature Topr –20 to +75 • Storage temperature Tstg –65 to +150 • Allowable power dissipation PD 500 Operating Conditions Supply voltage VCC V °C °C mW 1.8 to 5 V Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. –1– E98830A91-PS CXA2566M Block Diagram and Pin Configuration GND 1 Standby 2 Pwr_1 3 PVCC 4 PGND 5 Pwr_2 6 Det 7 AVLS 8 16 VCC Standby Bass sw 15 Bass 14 Left Bass Boost 13 C 12 Right Vref 11 Vref 10 RF_In Detector –2– Ripple 9 RF_Out CXA2566M Pin Description Pin No. 1 5 Symbol GND PGND Pin Voltage Equivalent circuit Description Pre-amp ground Power amp ground 0 0 VCC 2k 2 Standby 1 2k 20k 124 2 Standby switch H: Operate L: Standby 100k GND VCC v 3 6 Pwr_1 Pwr_2 3k 1.2 1.2 3 6 Left channel output Right channel output v GND 4 16 PVCC VCC Power amp supply Pre-amp supply 0 0 10k VCC 10k v v 7 Det <1 v 7 80k Detector output 124 GND VCC 20k 124 8 AVLS 8 0 100k GND –3– AVLS switch H: AVLS on L: AVLS off CXA2566M Pin No. Symbol Pin Voltage Equivalent circuit Description VCC 32k v 9 10 RF_Out RF_In 2.2 2.2 vv 124 100k 9 Ripple filter output 10 368k 124 GND 10k VCC 10k v v 11 Vref v 1.2 124 11 Voltage reference output GND 10k VCC 10k v v 12 14 Right Left Right channel input Left channel input 124 1.2 12 25k 14 GND VCC v 13 C 32k 124 1.2 v 13 32k GND –4– Low pass filter output CXA2566M Pin No. Symbol Pin Voltage Equivalent circuit Description VCC 20k 15 Bass 20k 124 1 15 100k 100k GND –5– Bass switch H: Bass on L: Bass off CXA2566M Electrical Characteristics Items Symbols Sw Condition Sw1 Sw2 Sw3 Sw4 Sw5 Vin Vrr Measurement conditions Current consumption 1 ICC1 Off On Off Off Off Current consumption 2 ICC2 Off Off Off Off Off Voltage gain 1 AV1 Off Off Off On On Voltage gain 2 AV2 Off Off On On On AVLS output 1 VAVLS1 On Off Off On On AVLS output 2 VAVLS2 On Off Off On On 250mVp-p Off Off Off On On THD = 10% Maximum Power PO1 –20dBm BB on, ∆Av at 100Hz and 1kHz 50mVp-p Distortion factor THD Off Off Off On On VO = 0.3Vrms Noise output Vno Off Off Off Off Off Rg = 0, A-weight Ripple Rejection RR Off Off Off Off Off Channel Separation CS Off Off Off On/ Off/ off on Standby off Vstandby Off Off Off Off Off Standby switch Istandby Off Off Off Off Off Bass on VBass Off Off On Off Off Bass switch IBass Off Off On Off Off AVLS on Vavls On Off Off Off Off AVLS switch Iavls On Off Off Off Off –6– –20dBm VO = –10dBv Vstandby = 1V VBass = 1V Vavls = 1V CXA2566M (Unless otherwise specified. Ta = 25°C, VC = 2.4V, RL = 16Ω, f = 1kHz, standby off, AVLS off, BB off) No. Items Symbols Measurement conditions Min. Typ. Max. Units — 18 23 µA — 3.2 5 mA 1 Current consumption 1 ICC1 2 Current consumption 2 ICC2 3 Voltage gain 1 AV1 Vin = –20dBm 11 11.78 12 dB 4 Voltage gain 2 AV2 BB on, ∆Av at 100Hz and 1kHz 8 9.22 10 dB 5 AVLS output 1 VAVLS1 AVLS on, Vin = 50mVp-p 86 103 116 mVrms 6 AVLS output 2 VAVLS2 AVLS on, Vin = 250mVp-p 86 104 116 mVrms 7 Maximum Power PO1 VCC = 2.4V, THD = 10% 15 30 — mW 8 Distortion factor THD VO = 0.3Vrms — 0.13 0.3 % 9 Noise output Rg = 0 — –84 –80 dBm 10 Ripple Rejection Vno RR∗1 fR = 1kMz, VRR = –20dBm 36 61 — dB 11 Channel Separation CS∗1 VO = –10dBv –46 –50 — dB 12 Standby off Vstandby 13 Standby switch Istandby 14 Bass on VBass 15 Bass switch IBass 16 AVLS on Vavls 17 AVLS switch Iavls Standby on Vstandby = 1V VBass = 1V Vavls = 1V ∗1 Values are measured with respect to input source. –7– 1 V 15 µA 1 V 30 µA 1 V 15 µA CXA2566M Electrical Characteristics Measurement Circuit 1 V2 OFF GND VCC 16 S2 S3 2 Standby Bass 15 ON C3 220 µ R2 16 OFF ON V3 OFF C9 1µ S5 3 Pwr1 Left 14 ON C8 0.1µ VCC 4 PVCC 5 PGND C 13 Vrr C7 1µ S4 ON Right 12 OFF R1 16 C6 10µ C2 220µ 6 Pwr2 7 Det 8 AVLS Vref 11 C5 10µ C1 10µ V1 ON RF_In 10 C4 1µ S1 RF_Out OFF –8– 9 Vin CXA2566M Description of Operation 1) Det Pin (Pin 7) This is the external pin for the detector during AVLS mode. The attack time is determined by the internal charging buffer and the external capacitor. The recovery time is determined by both the 80k impedance inside the IC and the external capacitor. 2) RF_Out (Pin 9) / RF_In (Pin 10) These are the two external pin for the power supply's ripple filter. It provides a regulated 0.92 × Vcc to the internal circuits. The rejection ratio is determined by the resistors inside the IC and the two external capacitors. VCC 32k 100k VCC Regulated 368k 10 9 RF_In RF_Out 3) C Pin (Pin 13) 32k Left Out Left 32k 32k 32k 32k 21k Right 65k 32k The bass boost circuitry is designed to provide a 9dB gain at 100Hz for C = 0.1µF. The cut off frequency is determined by: 32k Out Right fcutoff = 32k 32k 32k 13 C –9– 1 2π × 16k × C CXA2566M Application Circuit GND VCC 1 16 1: Bass On 0: Bass Off 1: Standby Off 0: Standby On Standby 220µ 2.4V 2 Standby Bass sw 15 Bass 1µ 220µ Pwr_1 PVCC 3 14 0.1µ Bass Boost 4 Left 13 C 16 1µ PGND 16 12 5 220µ 10µ Pwr_2 6 Vref 11 Vref 10µ 10µ Det 1: AVLS On 0: AVLS Off Right 10 7 RF_In 1µ AVLS 8 Detector Ripple 9 RF_Out Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same. – 10 – CXA2566M Example of Representative Characteristics Frequency characteristic Gain [dB] ICC [mA] Circuit current (at no signal) 4.0 3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 23.0 22.0 21.0 20.0 19.0 18.0 17.0 16.0 15.0 14.0 13.0 12.0 11.0 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 Bass Boost On C = 0.1µF 10 VCC [V] 100k Distortion factor vs. Input characteristics 10 Distortion factor [%] Crosstalk [dB] 10k Frequency [Hz] Crosstalk vs. Frequency –40 –41 –42 –43 –44 –45 –46 –47 –48 –49 –50 –51 –52 –53 –54 –55 –56 –57 –58 –59 –60 1k 100 10 100 1k 10k 1 0.1 0.01 0.001 100k Frequency [Hz] 0.1 0.01 Input [Vpk] – 11 – 1 CXA2566M Package Outline Unit: mm 16PIN SOP (PLASTIC) + 0.4 1.85 – 0.15 + 0.4 9.9 – 0.1 16 9 6.9 + 0.2 0.1 – 0.05 8 + 0.1 0.2 – 0.05 1.27 0.45 ± 0.1 0.5 ± 0.2 1 7.9 ± 0.4 + 0.3 5.3 – 0.1 0.15 0.24 M PACKAGE STRUCTURE PACKAGE MATERIAL SONY CODE SOP-16P-L01 EIAJ CODE SOP016-P-0300 EPOXY RESIN LEAD TREATMENT SOLDER PLATING LEAD MATERIAL COPPER ALLOY PACKAGE MASS 0.2g JEDEC CODE – 12 –