Panasonic AN7333S 4-element graphic equalizer ic for radio/radio cassette recorder Datasheet

ICs for Audio Common Use
AN7333S
4-Element Graphic Equalizer IC for Radio/Radio Cassette Recorder
■ Overview
5
6
10
11
19
18
17
16
15
14
12
13
• The resonance frequency can be freely set by optional selection of the capacitor capacitance.
• Low distortion rate: THD = 0.04% (VCC = 5 V)
• Wide dynamic range: VO = 800 mV[rms] (at Boost
THD = 1%)
• Low noise level: Vno = 10 µV (VCC = 5V)
0.15
0.925
0.1±0.1
■ Features
3
4
7.2±0.3
9.4±0.3
0.3
15.3±0.3
7
8
9
24
23
22
21
20
2.0±0.2
0.4±0.25 0.45
1
2
1.27
Unit: mm
The AN7333S is an integrated circuit for 4element graphic equalizers most suitable for radio
cassette / portable component stereo equipment.
2-channel 4-element graphic equalizer can be
configured by applying frequency setting capacitors
and variable resistors externally. Non-step adjustment of the boost and the cutting quantitiy is possible
by variable resistors.
SOP024-P-0375A
Note) The package of this product will be changed to lead-free type
(SOP024-P-0375C). See the new package dimensions section
later of this datasheet.
■ Block Diagram
GND
24
23
1
VCC
2
Publication date: December 2001
22
21
20
19
18
17
16
15
14
13
3
4
5
6
7
8
9
10
11
12
SDC00022BEB
1
AN7333S
■ Pin Descriptions
Pin No.
Description
Pin No.
Description
1
Power supply
13
Input pin
2
Non inverting input
14
Negative feedback
3
Inverting input
15
Input pin
4
Output
16
Negative feedback
5
Negative feedback
17
Input pin
6
Input pin
18
Negative feedback
7
Negative feedback
19
Input pin
8
Input pin
20
Negative feedback
9
Negative feedback
21
Output
10
Input pin
22
Inverting input
11
Negative feedback
23
Non inverting input
12
Input pin
24
GND
■ Absolute Maximum Ratings
Parameter
Symbol
Rating
Unit
Supply voltage
VCC
14.4
V
Supply current
ICC
30
mA
Power dissipation
PD
432
mW
Operating ambient temperature *1
Topr
−20 to +75
°C
Tstg
−55 to +125
°C
Storage temperature
*1
Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C.
■ Recommended Operating Range
Parameter
Supply voltage
Symbol
Range
VCC1, VCC2
Unit
4 to 14
V
■ Electrical Characteristics at VCC = 5 V, Ta = 25°C
Parameter
Conditions
Min
Typ
Max
Unit
Total circuit current
Itot
VIN = 0 mV

7.5

mA
Voltage gain
GV
f = 1 kHz, VO = −10 dBV

−1.5

dB
Boost
VO = −20 dBV is set to 0 dBV

9.5

dB
Cut quantity
Cut
VO = −20 dBV is set to 0 dBV

−9.5

dB
Total harmonic distortion
THD
f = 1 kHz, VO = −20 dBV

0.04

%
Output noise voltage
Vno
Rg = 0 Ω, Total Flat, DIN/AUDIO

10

µV
Crosstalk
CT
f = 1 kHz, Rg = 0 Ω,Total Flat, VO = −20 dBV

12

µV
Boost quantity
2
Symbol
SDC00022BEB
AN7333S
■ Terminal Equivalent Circuits
Pin No.
Equivalent circuit
1

2
23
Description
Power supply:
Supply pin
In
Pin voltage (V)
5
Non inverting input:
Output buffer circuit non-inverting input pin
1
V
2 CC
Inverting input:
Output buffer circuit inverting input pin
Center electric
potential
Output:
Output buffer output pin
Center electric
potential
Negative feedback:
Resonance circuit negative feedback pin
Center electric
potential
Input pin:
Resonance circuit input pin
Center electric
potential
3
2
VCC
3
22
4
21
Out
3
4
VCC
5, 7,
9, 11,
14, 16,
18, 20
In
22
5
6
6, 8,
10, 12,
13, 15,
17, 19
24

VCC
GND pin:
SDC00022BEB
0
3
AN7333S
■ Main Characteristics
THD  VCC
THD  VO
1.6
[+30°C]
fO = 1 kHz
VIN = −20 dB
0.2
Boost
0.1
Cut
Flat
Total harmonic distortion THD (%)
Total harmonic distortion THD (%)
0.3
0
5
10
15
20
Response in (dB)
Frequency characteristics
Boost
4
2
0
−2
−4
−6
−8
Flat
−10
−12
−14
10
Cut
30
100
300
1k
3k
10k
30k
100k
Frequency (Hz)
4
Boost
1.0
Cut
0.8
0.6
0.4
Flat
0.2
−30
−20
−10
Output voltage VO (dBV)
Supply voltage VCC (V)
14
12
10
8
6
1.2
0
−40
0
VCC = 5 V
fO = 1 kHz
1.4
SDC00022BEB
0
10
AN7333S
■ Application Circuit Example
10 µF
In 2
Out 2
4.7 kΩ
10 kΩ
0.0047 µF
10 µF
50 kΩ VR
50 kΩ VR
50 kΩ VR
0.68 µF
0.056 µF
24
23
22
21
20
50 kΩ VR
0.22 µF
0.018 µF
19
18
50 kΩ VR
0.068 µF
0.0056 µF
0.022 µF
0.0018 µF
17
16
15
14
13
8
9
10
11
12
0.012 µF
470 Ω
AN7333S
1
2
3
4
5
6
7
0.056 µF
VCC
50 kΩ VR
0.68 µF
0.22 µF
0.068 µF
50 kΩ VR
50 kΩ VR
50 kΩ VR
10 µF
4.7 kΩ
0.0056 µF
0.018 µF
0.0047 µF
0.022 µF
50 kΩ VR
0.012 µF
Out 1
10 µF
0.0018 µF
470 Ω
10 kΩ
Note) VR is B or G type.
• Resonant frequency fo
In
Out
50 kΩ VR
6.8 kΩ
R1 = 1 kΩ
C1
C2
R2 = 60 kΩ
fO =
1
2 π √ C1 × C2 × R1 × R2
(Internal resistance: R1 = 1 kΩ, R2 = 60 kΩ)
* Internal resistance: As R1 and R2 of internal resistors are common in each oscillation circuit,
fO can be adjustable from an external capacitor.
* Gain can be adjusted by the 50 kΩ variable resistor.
SDC00022BEB
5
AN7333S
■ New Package Dimensions (Unit: mm)
• SOP024-P-0375C (Lead-free package)
15.27±0.20
24
13
+0 10
0.15-0 05
7.20±0.20
9.30±0.30
(1.05)
0° to 10°
1
1.27
0.40+0.10
-0.05
12
0.10±0.10
(0.65)
Seating plane
6
2.00±0.20
0.30±0.20
SDC00022BEB
Seating plane
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2001 MAR
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