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HA12232 Dataheets PDF



Part Number HA12232
Manufacturers Hitachi Semiconductor
Logo Hitachi Semiconductor
Description Audio Signal Pre-Amp
Datasheet HA12232 DatasheetHA12232 Datasheet (PDF)

HA12232FP Audio Signal Pre-Amp. for Car Deck ADE-207-328 (Z) Target Specifications 1st Edition Sep. 2000 Description HA12232FP is audio signal pre-amp. LSI providing PB equalizer op-amp. in one chip. Function • PB equalizer • Vref buffer × 2 channel × 1 channel Features • Built-in referential voltage (VREF) for PB equalizer decreases external components. • This IC is low noise. • This IC is strong for a cellular phone noise. Operating Voltage Range Product HA12232FP Min 6.5 Max 15 Unit V No.

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HA12232FP Audio Signal Pre-Amp. for Car Deck ADE-207-328 (Z) Target Specifications 1st Edition Sep. 2000 Description HA12232FP is audio signal pre-amp. LSI providing PB equalizer op-amp. in one chip. Function • PB equalizer • Vref buffer × 2 channel × 1 channel Features • Built-in referential voltage (VREF) for PB equalizer decreases external components. • This IC is low noise. • This IC is strong for a cellular phone noise. Operating Voltage Range Product HA12232FP Min 6.5 Max 15 Unit V Note: This IC is designed to operate on single supply. HA12232FP Pin Description, Equivalent Circuit (VCC = 9 V single supply, Ta = 25°C, No Signal, The value in the table shows typical value.) Pin No. 7 Pin Name RIP Note V = VCC/2 Equivalent Circuit VCC Description Ripple filter V GND 1 VREF V = VCC/2 VCC Reference output V 1 GND 10 EQOUT(L) V = VCC/2 VCC Equalizer output V GND 5 2 EQOUT(R) PBIN(R)  PB equalizer input PBIN NFI 13 3 12 PBIN(L) NFI(R) NFI(L) V = VCC/2 Equalizer output for time constant Rev.1, Sep. 2000, page 2 of 14 HA12232FP Pin Description, Equivalent Circuit (VCC = 9 V single supply, Ta = 25°C, No Signal, The value in the table shows typical value.) (cont.) Pin No. 8 14 4 6 9 11 Pin Name VCC GND NC Note    Equivalent Circuit Description Power supply GND pin Rev.1, Sep. 2000, page 3 of 14 HA12232FP Block Diagram EQOUT(L) R6 180 C3 0.01µ R5 14 GND VCC R4 12k 13 PBIN(L) 12 NFI(L) 330k 11 NC 10 9 NC 8 − + + PBIN(R) − NFI(R) VREF 1 2 3 4 R2 330k 5 6 C2 1µ R1 180 C1 0.01µ R3 12k EQOUT(R) Unit R: Ω C: F Rev.1, Sep. 2000, page 4 of 14 RIP NC NC 7 + HA12232FP Absolute Maximum Ratings (Ta = 25°C) Item Supply voltage Power dissipation Operating temperature Storage temperature Symbol VCC Max Pd Topr Tstg Rating 16 400 −40 to +85 −55 to +125 Unit V mW °C °C Ta ≤ 85°C Note Electrical Characteristics (Ta = 25°C, VCC = 9 V, Rg = 680 Ω) Specification Item Quiescent current Channel separation EQ gain Symbol IQ CT RL GV 1k GV 10k THD EQ maximum output Noise voltage level converted in input Note: 1. VCC = 6.5 V THD VOM VN Test Condition No signal Fin = 1kHz, Vin = 6mVrms Fin = 1kHz, Vin = 0.6mVrms Fin = 10kHz, Vin = 0.6mVrms Fin = 1kHz, Vin = 2.4mVrms Fin = 1kHz, THD = 1% Rg = 680Ω, Din-Audio Filter Min 1.5 50.0 37.0 33.0  300  Typ 2.2 60.0 40.0 36.0 0.1 600 0.7 Max 3.2  43.0 39.0 0.5  1.5 Unit mA dB dB dB % mVrms µVrms *1 Remark Rev.1, Sep. 2000, page 5 of 14 HA12232FP Functional Description Power Supply Range HA12232FP is designed to operate on single supply only. Table 1 Product HA12232FP Supply Voltage Range Single Supply 6.5 V to 15.0 V Reference Voltage HA12232FP provides the reference voltage of half the supply voltage that is the signal grounds. As the peculiarity of this device, the capacitor for the ripple filter is very small about 1/100 compared with their usual value. The block diagram is shown as figure 1. 8 VCC + − 14 7 1 Figure 1 The Block Diagram of Reference Supply Voltage Rev.1, Sep. 2000, page 6 of 14 HA12232FP Input Block Diagram and Level Diagram Vref 0.6mVrms (−62.2dBs) PBIN 60mVrms (−22.2dBs) PB-EQ Amp. EQOUT + − NFI R2 330k R1 180 C1 0.01µ R3 12k PB-EQ Amp. Gv = 40 dB, f = 1 kHz Figure 2 Input Block Diagram Cutoff Frequency, Gain of PB-EQ Amp. Transfer Function G0 T = R2 [w2 c12 (R2 + R3) (R1 + R3) + 1] / R1 [w2 c12 (R2 + R3)2 + 1] + j ⋅ R2w c12 (R1 − R2) / R1 [w2 c12 (R2 + R3)2 + 1] Cutoff Frequency GV G∞ fc = {[−b ± (b2 − 4a)1/2] / 2a} / 2π a = 2c14 (R2 + R3)2 (R3 + R1)2 b = [3 (R2 + R3) (R3 + R1) − (R2 + R3)2 − (R3 + R1)2] c12 Changing the value of each element to one shown in figure 2, will be as follows. fc1 f fc2 fc1 = 50 Hz, fc2 = 1300 Hz PB-EQ Amp. Gain (f = 0, ∞) f=0 T0 = R2 / R1 G0 = 65.3 dB f=∞ T∞ = R2 (R3 + R1) / R1 (R2 + R3) G∞ = 36.3 dB Figure 3 Cutoff Frequency of PB-EQ Amp. Rev.1, Sep. 2000, page 7 of 14 Test Circuit HA12232FP R10 10k C8 2.2µ R4 12k + C5 22µ R5 12 330k 11 10 9 8 NC NC GND PBIN(L) NFI(L) EQOUT(L) − + VCC VREF PBIN(R) NFI(R) NC NC 1 330k R7 680 R1 180 C1 0.01µ C7 2.2µ R9 10k + 2 C2 1µ 3 5 EQOUT(R) 6 4 R2 C4 22µ R3 12k + Notes: 1. Resistor tolerance ±1% 2. Capacitor tolerance ±1% 3. Unit R: Ω, C: F RIP Rev.1, Sep. 2000, page 8 of 14 R6 R8 180 680 C3 0.01µ C6 100µ + DC +9V SOURCE1 + 14 13 AC VM2 Lch Rch SW2 Distortion analyzer Oscillo scope Noise meter Lch Rch SW3 DC VM1 AUDIO SG Lch AC VM1 + − SW1 Rch 7 + HA12232FP Characteristic Curves Quiescent Current vs. Supply Voltage 3.0 Quiescent Current IQ (mA) 2.5 2.0 1.5 5 6 7 8 9 10 11 12 13 Supply Voltage (V) 14 15 16 −40 Channel Separation vs. Frequency (L→R, R→L) −60 Channel Separation (dB) −80 −100 −120 −140 10 100 1k Frequency (Hz) 10k 100k Rev.1, Sep. 2000, page 9 of 14 HA12232FP EQ Amp. Gain vs. Frequency 80 70 60 EQ Gain (dB) 50 40 30 VCC = 9.0 V PBIN→EQOUT 20 10 100 1k Frequency (Hz) 10k 100k Total Harmonic Distortion vs. Supply Voltage 1.0 100 Hz (30 kHz LPF) 1 kHz (4.


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