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| RF amplifier for Car CD BH3514BFV Description The BH3514BFV is a RF amplifier for Car CD players that has a built-in equalizer circuit (EQ). The equalizer circuit is applied to x1, x2 and x4 speeds. The equalizer circuit has improved characteristics, which will enhance the overall performance during mobile jitter conditions. Boost quantity and phase characteristics can also be controlled. Gain up SW for CD-R/RW is incorporated and is available for multi-reads. LD voltage can be switched in 3-steps. This RF amplifier is available for each pick. Features 1) For CD (x1, x2, x4 speeds) 2) Multi-read type (built-in gain up SW for CD-R/RW) 3) LD voltage changeable in 3 steps 4) Built-in electronic volume for control tracking and focus 5) Built-in EQ circuit has group delay characteristics of an improved type 6) Boost quantity and phase characteristic can be controlled Dimension (Unit : mm) 13.6 0.2 40 21 7.8 0.3 5.4 0.2 1 20 1.8 0.1 0.1 0.65 0.1 0.22 0.1 0.08 M SSOP-B40 Applications CD-RW read type Car CD, Car CD with shock-proof function Other CD players Absolute Maximum Ratings (Ta=25C) Parameter Max. applied voltage Power dissipation Operating temperature range Storage temperature range Derating : 8.5mW/C for operation above Ta=25C Symbol Vcc Pd Topr Tstg -40 -55 Limits 7 850 Unit V mW ~ +85 ~ +125 C C Operating Conditions (Ta=25C) Parameter Supply voltage Symbol VCC Min. 4.5 Typ. 5.0 Max. 5.5 Unit V 0.3Min. 0.15 0.1 Electrical characteristics (Unless otherwise noted; Ta=25C, Vcc=5V) Parameter Consumption current at no loadX1 VRFE output voltage Summing amplifier gain 1 (Normal mode) Summing amplifier gain 2 (RW mode) AGC MAX gain AGC operation level Equalizer frequency characteristic 1 (X1speed) Equalizer frequency characteristic 2 (X2speed) Equalizer frequency characteristic 3 (X4speed) RFDET detection level Symbol IQ VREF GRF1 GRF2 GAGCMAX AOPAGC1 Gf1 Gf2 Gf3 VRFOET Min. 14 4 18 19 1.0 1.5 1.5 1.5 70 Typ. 19 6 21 22 1.2 3 3 3 100 Max. 24 8 24 25 1.4 4.5 4.5 4.5 130 Unit mA V dB dB dB Vp-p dB dB dB Conditions Normal gain, X1 speed GCTL=Hi-Z, Low GCTL=High Vcc=5V, f=500kHz, VIN=500mVp-p f=144k/720k, BOOST=VBGX0.55, SPDCTL=High f=288k/1.44M, SPDCTL=Low f=576k/2.88M, SPDCTL=Hi-Z VCCX0.45 VCCX0.5 VCCX0.55 mVp-p f=500kHz, RFDET=H to L Application Circuit AB C A 40 B 39 C 38 F RTIN RTIN E 0.1 82K 82K CFE CTE 0.1 FBAL TBAL F 37 E 36 NC 35 REF 1 34 33 32 NC 31 SPDCTL GCTL LDRCTL 30 29 28 NC FEN RFE FEO TEN RTE TEO TEBPF 27 26 25 24 23 22 NC 21 2K 30K 30K Balance control 12K 2K Balance control VGA Subtraction B-A TBAL + to A + 12K VGA COMP COMP VGA Subtraction E-F TBAL + to F + OR BH3514BFV VGA SPD RF DET (Reverse) OFTR AGC EQ ENV DET BDO (Reverse) PHASE BOOST 1 PD 10 2 LD 3 4 ARFIN VCC 5 6 7 PHASE BOOST VBG 8 RFO 1 9 RFI 10 11 12 GND CAGC ARF 0.1 0.033 13 14 15 CEA ENVO 0.01 CSBDO 2200p 16 BDO 17 CSBRT 18 19 20 OFTR RFDET VDET 2200p LD 10 PD 2.2K 1 |
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