BH2615S Rohm, BH2615S Datasheet
BH2615S
Related parts for BH2615S
BH2615S Summary of contents
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... Audio ICs Electronic tuning PLL frequency synthesizer BH2615S The BH2615S is a PLL frequency synthesizer, featuring low radiation and low power consumption. It includes high sensitive RF amplifier and supports IF count function. Features 1) Low voltage operation (2.7V~) 2) High speed prescaler capable of direct dividing VCO (130MH ...
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... Audio ICs Block diagram Pin assigment PHASE REFERENCE DIVIDER DET PRESCALER MAIN COUNT SHIFT REGISTER LATCH I/O CTL IF COUNT CTL 20BIT COUNT 13 11 BH2615S ...
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... IN Input FM local OSC. IN Supply voltage 2.7 3.6V DD2 Supply voltage 2.7 3.6V DD1 If local OSC freq, divided higher than D1 reference freq, "H". lower, "L" and same, (Floating). SS BH2615S OUT IN IN Nch open drain 3-State Nch open drain IN Nch open drain IN IN ...
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... 900 mVrms 0.4 5 900 mVrms 5 900 mVrms 0 900 mVrms 1.0 s 500 ns 500 ns BH2615S = V = 3.0V 0.0V) DD2 SS Conditions FM 130MH , 50mVrms Current IN Z DD1 DD2 AM 1.0MH , 50mVrms Current IN Z DD1 DD2 PLL OFF CE,CK,DA Pins CE,CK,DA Pins CE,CK,DA Pins DD1 XIN Pin, ...
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... Audio ICs Circuit operation Input data format Internal Data Input from Output data format CE "L0" level Output : pulled Output from sec sec Output data enable , only BH2615S sec sec sec ...
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... Reference R 2 frequency 0 25kH Z 1 12.5kH Z 0 6.25kH Z 1 5kH Z 0 3.125kH Z 1 3kH Z 0 1kH Z 1 PLL OFF FM Pull down counter Unlock detector OFF OFF OFF BH2615S Division is twice the set point Pull down, PD Floating IN Output data NG OK ...
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... CT=1, unlock detector start before gate pulse of IF counter. CT=0 GT=0, IF counter and unlock detector. CE CT,GT 1 ERR U(N) Operation Structure output sec sec sec sec. GATE PULSE 16m/32msec. Unlock Detection T1 8msec. 1msec. T1 ERR 7 sec. ERR 13 sec. ERR 26 sec. ERR 54 sec. ERR BH2615S SHIFT REG CD 20BIT COUNT RESET 2msec. ...
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... Gate Pulse Count Data CD 2) CT=0 GT=1 : unlock detection only. 15 sec Input Control Data CT=0 (Internal) GT=1 Gate Pulse Count Data CD Pin T2 8msec. Unlock Detection IF Count 16m / 32msec. 1msec. T1 < 2msec. 30 sec. 1msec. T1 < 2msec. 8msec. Unlock Detection BH2615S 30 sec. T2=4msec. ...
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... Audio ICs Structure CD Pin CD Pin becomes “L0” after finishing IF count or unlock detection operation. Output data synchronized CK GATE PULSE CD Pin CK External dimensions (Units : mm) 19.4 ± 0 7.62 1.778 0.5 ± 0 SDIP22 BH2615S ...