bh7779k ROHM Co. Ltd., bh7779k Datasheet - Page 11

• Manufacturer Part Number: bh7779k
• Description: Audio Signal Processing System
• Manufacturer: ROHM Co. Ltd.

Video ICs
Carrier setting
resistance value
Frequency
deviation
Maximum frequency
deviation
FM output level
Carrier 2nd harmonic
Carrier 3rd harmonic
FM MIX ratio (FM MIX1 mode)
REC EQ SW impedance
PB EQ SW impedance
HEAD EQ SW impedance
RHS control current
RHS control leakage current
Compression
characteristic
Encode distortion
Output residual noise
Expansion characteristic
Time constant setting
resistance value
Output voltage level
Distortion
Output residual noise
Open loop gain
(INPUT : TUNER IN L / R, LINE1 IN L / R, LINE2 IN L / R, BS IN L / R, OUTPUT : FM REC OUT L / R)
NORMAL PB AMP (INPUT: NA HEAD IN, OUTPUT: LINE OUT)
(PB PRE AMP)
EQ SWITCH
RHS CONTROL
PNR ENCODE MODE
PNR DECODE MODE
MODEM REC MODE
Parameter
Rch
Rch
Rch
Rch
Rch
Rch
Lch
Lch
Lch
Lch
Lch
Lch
DEVMax.
DEVMax.
R
G
THD
THD
Symbol
R
V
V
R
V
V
I
DEV
DEV
V
EQ HEAD
I
CMP
EXP
R
VPBNOR
IN RHS
EQ REC
ONENC
R
ONPBN
L RHS
R
EQ PB
OPBN
OFMR
OFML
f
f
f
f
f
DET
2R
3R
LR
2L
3L
OR
OL
PBN
END
R
L
R
L
– 11.9
– 15.7
Min.
58.0
5.10
12.5
46.2
46.6
125
125
325
335
9.5
98
—
—
—
—
—
—
—
—
—
—
—
—
—
—
– 10.1
– 61.5
– 24.6
– 56.5
– 50.3
– 53.0
– 48.0
– 52.0
– 55.0
– 13.7
Typ.
0.15
65.5
0.17
6.15
15.0
11.5
52.2
52.6
118
147
147
370
380
22
25
29
—
– 53.0
– 40.0
– 40.0
– 40.0
– 42.0
– 11.7
– 8.3
Max.
0.40
7.20
17.5
13.5
58.2
58.6
140
169
169
425
435
40
50
50
—
—
—
—
—
1
mV
mV
dBV
dBV
Unit
dB
dB
dB
dB
k
%
%
k
k
dB
dB
dB
dB
dB
kHz
kHz
kHz
kHz
A
A
P-P
P-P
No input
V
1.3MHz / 1.7MHz spectrum ratio.
V
FM OUT SW: FM L mode
FM OUT SW: FM R mode
2nd stage harmonics and fundamental harmonics
spectrum ratio
Lch: FM L mode, Rch: FM R mode
3rd stage harmonics and fundamental harmonics
spectrum ratio
Lch: FM L mode, Rch: FM R mode
V
V
R g = 1k ,
V
OUTPUT: NA PB OUT
SP MODE
SP MODE
EP MODE
Input V
level difference.
V
Connect the pertinent input to GND.
V
Resistance value connected between pins 15 and
34 and V
IN
IN
IN
IN
IN
IN
IN
= – 9.7dBV
= + 5.0dBV (f = 10kHz)
= – 15.5dBV
= – 70dBV
= – 70dBV,
= – 70dBV
= – 9.7dBV,
IN
EE
= – 9.7dBV
. (when V
2
1
1
– 40.5dBV output level difference.
Conditions
CCS
—
—
– 59.7dBV output
and V
EES
applied)
BH7779K
2
11