Ordering number : EN5701
Monolithic Linear IC
LA4582CM
Pre + Power Amplifier for
3-V Headphone Stereo Systems
Overview
The LA4582CM is a preamplifier plus power amplifier IC
that support auto-reverse, and was developed for 3-V
headphone stereo systems.
Features
• The LA4582CM was developed for cassette playback
systems, and in addition to preamplifier and power
amplifier functions, it also provides low boost and
automatic power limitation (PVSS: Peak Volume Select
System) functions.
• Provided in a 36-pin miniature flat package (0.65 mm
lead pitch) that is optimal for set miniaturization.
• Capable of driving 8-Ω speakers
• Two-channel playback auto-reverse preamplifier
• Two-channel headphone power amplifier
• Low-frequency boost function (auto-loudness effect)
• Output suppression function (PVSS)
• Two-channel radio input switch (pre-mute switch)
• Power mute switch
Package Dimension
unit: mm
[LA4582CM]
Allowable power dissipation, Pdmax – mW
Ambient temperature, Ta – °C
SANYO: QFP36
Specifications
Maximum Ratings
at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
V
CC
max
Pd max
Topr
Tstg
Conditions
Ratings
4.5
375
–20 to +75
–40 to +150
Unit
V
mW
°C
°C
Operating Conditions
at Ta = 25°C
Parameter
Recommended supply voltage
Operating voltage range
Symbol
V
CC
V
CC
op
Conditions
Ratings
3.0
1.8 to 3.6
Unit
V
V
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
63097HA(OT) No. 5701-1/6
LA4582CM
Operating Characteristics
at Ta = 25°C, V
CC
= 3.0 V, fi = 1 kHz, 0.775 V = 0 dBm
R
L
= 10 kΩ (preamplifier), R
L
= 30 kΩ (low boost), R
L
= 16
Ω
(power amplifier)
Parameter
[PRE + L.BOOST + PVSS + POWER]
Quiescent current
Voltage gain (closed loop)
[Preamplifier]
Voltage gain (open loop)
Voltage gain (closed loop)
Maximum output voltage
Total harmonic distortion
Equivalent input noise voltage
Crosstalk
Ripple rejection
[Power Amplifier]
Output power
Voltage gain (closed loop)
Total harmonic distortion
Interchannel crosstalk
Output noise voltage
Ripple rejection
Input resistance
DC offset voltage
[L· BOOST]
Voltage gain
Boost
Maximum output voltage
Total harmonic distortion
Interchannel crosstalk
Output noise voltage
Ripple rejection
[L· BOOST + PVSS + POWER] R
V
= 30 kΩ max
Voltage gain
Low boost output voltage
Low boost total harmonic distortion
PVSS voltage
VG
4
V
O
1
V
O
2
THD
4
V
O
3
V
IN
= –40 dBm, f = 1 kHz, boost: on/off
V
IN
= –43 dBm, f = 100 Hz, boost: on
V
IN
= –28 dBm, f = 100 Hz, boost: on
V
IN
= –40 dBm, f = 100 Hz, boost: on
V
IN
= –40 dBm, PVSS2
Input increment between the point where
operation starts and the point where the
output is +4 dB from there.
PVSS: on
V
IN
= –40 dBm, PVSS2
PVSS2
–67
–40
22.0
0.13
0.25
24.5
0.23
0.4
0.5
–37
28.0
0.33
0.55
1.2
–34
dB
V
V
%
dBm
VG
3
BST
1
BST
2
V
O
max2
THD
3
CT
3
V
NO2
Rr3
V
IN
= –30 dBm, boost: on/off
V
INBST
= –30 dBm, f = 100 Hz, boost: on
V
INBST
= –30 dBm, f = 10 Hz, boost: on
THD = 1%, boost: on
V
O
= 0.1 V, boost: on
V
O
= –20 dBm, Rg = 0, boost: on
Rg = 0, BPF = 20 Hz to 20 kHz, boost: off
Rg = 0, f
R
= 100 Hz, V
R
= –20 dBm,
V
CC
= 1.8 V, boost: on
45
25
–2.3
11.2
7.0
0.3
–3.8
14.7
8.5
0.5
0.04
32
2.0
53
5.0
0.5
–5.3
18.2
10
dB
dB
dB
V
%
dB
µV
dB
P
O
VG
2
THD
2
CT
2
V
NO1
Rr
2
Ri
V
ODC OFF
Between pin 8 and pins 4 to 6
THD = 10%
V
O
= –5 dBm
P
O
= 1 mW
V
O
= –5 dBm, R
V
= 0
Ω
R
V
= 0
Ω,
BPF = 20 Hz to 20 kHz
R
V
= 0
Ω,
V
r
= –20 dBm
fr = 100 Hz, V
CC
= 1.8 V
45
22
–90
30
23
27
34
29
0.4
40
25
55
30
38
+90
40
32
1.0
mW
dB
%
dB
µV
dB
kΩ
mV
VG
0
VG
1
V
O
max1
THD
1
V
NI
CT
1
Rr
1
V
O
= –5 dBm
V
O
= –5 dBm
THD = 1%, V
CC
= 1.8 V
V
O
= 0.2 V, VG = 40 dB/NAB
Rg = 2.2 kΩ, BPF = 20 Hz to 20 kHz
Rg = 2.2 kΩ, TUNE 1 kHz
Rg = 2.2 kΩ, V
CC
= 1.8 V,
Vr = –20 dBm, fr = 100 Hz
60
40
0.1
70
83
40
0.2
0.05
1.3
80
50
0.5
2.0
dB
dB
V
%
µV
dB
dB
I
CCO
1
I
CCO
2
VG
T
Rg = 2.2 kΩ, low boost off, PVSS off
Rg = 2.2 kΩ, low boost on, PVSS on
V
O
= –5 dBm
13
14
62.5
19
20
64.5
29
30
67.5
mA
mA
dB
Symbol
Conditions
Ratings
min
typ
max
Unit
PVSS width
W
PVSS
THD
5
V
OPIN
30
40
dB
PVSS total harmonic distortion
PVSS start input
Note: The amount of boost for a 1-kHz signal.
0.5
–63
1.2
–59
%
dBm
No. 5701-2/6
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