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=25˚C)
Parameter
Max. applied voltage
Power dissipation
Operating temperature range
Storage temperature range
∗Derating
: 8.5mW/˚C for operation above Ta=25˚C
Symbol
Vcc
Pd
Topr
Tstg
–40
–55
Limits
7
850
∗
Unit
V
mW
~ +85
~ +125
˚C
˚C
Operating Conditions (Ta=25˚C)
Parameter
Supply voltage
Symbol
V
CC
Min.
4.5
Typ.
5.0
Max.
5.5
Unit
V
0.3Min.
0.15
±
0.1
Electrical characteristics (
Unless otherwise noted; Ta=25˚C, Vcc=5V)
Parameter
Consumption current at no load
X
1
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
I
Q
VREF
G
RF
1
G
RF
2
G
AGCMAX
A
OPAGC
1
G
f1
G
f2
G
f3
V
RFOET
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
V
CCX
0.45 V
CCX
0.5 V
CCX
0.55
mVp-p
f=500kHz, RFDET=H to L
Application Circuit
A B
C
A
40
B
39
C
38
F
RTIN
RTIN
E
0.1µ
82K
82K
CFE
CTE
0.1µ
FBAL
TBAL
F
37
E
36
NC
35
REF
1µ
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
10µ
2
LD
3
4
ARFIN V
CC
5
6
7
PHASE BOOST VBG
8
RFO
1µ
9
RFI
10
11
12
GND CAGC ARF
0.1µ
0.033µ
13
14
15
CEA
ENVO
0.01µ CSBDO
2200p
16
BDO
17
CSBRT
18
19
20
OFTR RFDET VDET
2200p
LD
10
PD
2.2K
1µ
京公网安备 11010802033920号
EEWORLD
