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
× 2 channel
• Vref buffer
× 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
Min
Max
Unit
HA12232FP
6.5
15
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.
Pin Name
Note
7
RIP
V = VCC/2
Equivalent Circuit
Description
VCC
Ripple filter
V
GND
1
VREF
VCC
V = VCC/2
Reference output
V 1
GND
10
EQOUT(L)
VCC
V = VCC/2
Equalizer output
V
GND
5
EQOUT(R)
2
PBIN(R)
PB equalizer input
PBIN
NFI
13
PBIN(L)
3
NFI(R)
12
NFI(L)
V = VCC/2
Rev.1, Sep. 2000, page 2 of 14
Equalizer output
for time constant
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.
Pin Name
Note
Equivalent Circuit
Description
8
VCC
Power supply
14
GND
GND pin
4
NC
6
9
11
Rev.1, Sep. 2000, page 3 of 14
HA12232FP
Block Diagram
EQOUT(L)
R6
180
C3
0.01µ
VCC
R4
12k
R5
330k
11
10
9
8
NC
NC
12
NFI(L)
13
PBIN(L)
GND
14
−
+
1
3
NC
NC
NFI(R)
2
4
R2
5
C1
0.01µ
6
7
C2
1µ
330k
R1
180
RIP
−
PBIN(R)
VREF
+
+
R3
12k
EQOUT(R)
Unit R: Ω
C: F
Rev.1, Sep. 2000, page 4 of 14
HA12232FP
Absolute Maximum Ratings (Ta = 25°C)
Item
Symbol
Rating
Unit
Supply voltage
VCC Max
16
V
Power dissipation
Pd
400
mW
Operating temperature
Topr
−40 to +85
°C
Storage temperature
Tstg
−55 to +125
°C
Note
Ta ≤ 85°C
Electrical Characteristics (Ta = 25°C, VCC = 9 V, Rg = 680 Ω)
Specification
Item
Symbol
Test Condition
Min
Typ
Max
Unit
Quiescent current
IQ
No signal
1.5
2.2
3.2
mA
Channel separation
CT RL
Fin = 1kHz, Vin = 6mVrms
50.0
60.0
dB
EQ gain
GV 1k
Fin = 1kHz, Vin = 0.6mVrms
37.0
40.0
43.0
dB
GV 10k
Fin = 10kHz, Vin = 0.6mVrms
33.0
36.0
39.0
dB
THD
THD
Fin = 1kHz, Vin = 2.4mVrms
0.1
0.5
%
EQ maximum output
VOM
Fin = 1kHz, THD = 1%
300
600
mVrms
Noise voltage level
converted in input
VN
Rg = 680Ω, Din-Audio Filter
0.7
1.5
µVrms
Note:
Remark
*1
1. VCC = 6.5 V
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
Supply Voltage Range
Product
Single Supply
HA12232FP
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
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]
G0
Cutoff Frequency
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
GV
G∞
Changing the value of each element to one shown in figure 2,
will be as follows.
fc1
fc2
f
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
SW1 Rch
AC VM1
Notes: 1. Resistor tolerance ±1%
2. Capacitor tolerance ±1%
3. Unit R: Ω, C: F
Lch
AUDIO SG
C4
22µ
12
R7
680 R1
180
2
1
+
13
NFI(L)
3
NFI(R)
14
+
−
R9
10k
C7
2.2µ
R3
12k
330k
4
R2
C1
0.01µ
−
+
+
330k
11
R5
C3
0.01µ
NC
NC
C5
22µ
GND
VREF
PBIN(L)
PBIN(R)
10
+
EQOUT(L)
5
+
EQOUT(R)
C8
2.2µ
R4
12k
9
C2
1µ
8
6
7
+
NC
NC
R6
R8 180
680
VCC
Rev.1, Sep. 2000, page 8 of 14
RIP
R10
10k
+
Rch SW2
Lch
C6
100µ
Noise
meter
Oscillo
scope
Distortion
analyzer
AC VM2
DC +9V
SOURCE1
Rch SW3
Lch
DC VM1
HA12232FP
Test Circuit
HA12232FP
Characteristic Curves
Quiescent Current vs. Supply Voltage
Quiescent Current IQ (mA)
3.0
2.5
2.0
1.5
5
−40
6
7
8
9 10 11 12 13
Supply Voltage (V)
14
15
16
Channel Separation vs. Frequency (L→R, R→L)
Channel Separation (dB)
−60
−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
EQ Gain (dB)
60
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 (400 Hz HPF + 30 kHz LPF)
10 kHz (400 Hz HPF + 80 kHz LPF)
PBIN→EQOUT
Vout = 240 mVrms
T.H.D. (%)
0.1
0.01
0.001
5
Rev.1, Sep. 2000, page 10 of 14
6
7
8
9 10 11 12 13
Supply Voltage (V)
14
15
16
HA12232FP
Total Harmonic Distortion vs. Output Level
10.0
T.H.D. (%)
1.0
100 Hz (30 kHz LPF)
1 kHz (400 Hz HPF + 30 kHz LPF)
10 kHz (400 Hz HPF + 80 kHz LPF)
PBIN→EQOUT
VCC = 9.0 V
0 dB = 60 mVrms
0.1
0.01
0.001
−10
0
10
20
Output Level Vout (dB)
30
40
Signal Handling
5.0
Vomax (Vrms)
4.0
100 Hz (30 kHz LPF)
1 kHz (400 Hz HPF + 30 kHz LPF)
10 kHz (400 Hz HPF + 80 kHz LPF)
PBIN→EQOUT
T.H.D. ≅ 1 %
3.0
2.0
1.0
5
6
7
8
9 10 11 12 13
Supply Voltage (V)
14
15
16
Rev.1, Sep. 2000, page 11 of 14
HA12232FP
Noise Voltage Level Converted in Input vs. Supply Voltage
Noise Voltage Level Converted in Input (µVrms)
1.5
Rg = 680 Ω
Din-Audio Filter
1.0
0.5
0
5
6
7
8
9 10 11 12 13
Supply Voltage (V)
14
15
16
Ripple Rejection Ratio vs. Frequency
Ripple Rejection Ratio R.R.R. (dB)
20
0
−20
−40
−60
10
Rev.1, Sep. 2000, page 12 of 14
100
1k
Frequency (Hz)
10k
100k
HA12232FP
Package Dimensions
Unit: mm
10.06
10.5 Max
8
5.5
14
1
0.10 ± 0.10
1.42 Max
1.27
*0.42 ± 0.08
0.40 ± 0.06
*0.22 ± 0.05
0.20 ± 0.04
2.20 Max
7
0.20
7.80 +– 0.30
1.15
0˚ – 8˚
0.70 ± 0.20
0.15
0.12 M
*Dimension including the plating thickness
Base material dimension
Hitachi Code
JEDEC
EIAJ
Mass (reference value)
FP-14DA
—
Conforms
0.23 g
Rev.1, Sep. 2000, page 13 of 14
HA12232FP
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Colophon 2.0
Rev.1, Sep. 2000, page 14 of 14