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PDF TA2131FLG Data sheet ( Hoja de datos )
| Número de pieza | TA2131FLG | |
| Descripción | Low Current Consumption Headphone Amplifier | |
| Fabricantes | Toshiba Semiconductor | |
| Logotipo |  |
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TOSHIBA Bipolar Linear IC Silicon Monolithic
TA2131FLG
TA2131FLG
Low Current Consumption Headphone Amplifier for Portable MD Player (With Bass Boost
Function)
www.datasheet4u.com
The TA2131FLG is a low current consumption headphone
amplifier developed for portable digital audio. It is particularly
well suited to portable MD players that are driven by a single dry
cell. It also features a built-in bass boost function with AGC, and
is capable of bass amplification of DAC output and analog signals
such as tuner.
An ultra-compact QON package is utilized, enabling sets to be
compacted.
Features
• Low current consumption: ICCQ (VCC1) = 0.55 mA (typ.)
ICCQ (VCC2) = 0.20 mA (typ.)
• Output power: Po = 8 mW (typ.)
(VCC1 = 2.8 V, VCC2 = 1.2 V, f = 1 kHz, THD = 10%, RL = 16 Ω)
• Low noise: Vno = −102dBV (typ.)
• Built-in low-pass boost (with AGC)
• I/O pin for beep sound
• Outstanding ripple rejection ratio
• Built-in power mute
• Built-in power ON/OFF switch
• Operating supply voltage range (Ta = 25°C): VCC1 = 1.8~4.5 V
VCC2 = 0.9~4.5 V
Weight: 0.05 g (typ.)
Actual product display name: 2131
1 2006-04-19
1 page  
Terminal No. Terminal Explanation
15 BEEP IN
Beep sound input
terminal
Receives beep sound
signals from
microcomputer.
www.datasheet4u.com
23
BEEP
OUTB
24
BEEP
OUTA
Beep sound output
terminal
InternaL Circuit
20
10 kΩ
15
16 BST SW
Bass boost ON/OFF
switch
“H” level/OPEN:
BST ON
“L” level: BST OFF
Refer to function
explanation 5
20
20 kΩ
16
17 MT SW
Mute switch
“L” level: Mute reset
“H” level: Mute ON
Refer to function
explanation 5
VCC1
20
47 kΩ
17
TA2131FLG
Terminal
Voltage
(V)
0
23
24 ⎯
⎯
⎯
18 PW SW
Power ON/OFF
switch
“H” level: IC operation
“L” level: IC OFF
Refer to function
explanation 5
VCC1
20
47 kΩ
18
⎯
5 2006-04-19
5 Page 
5. Threshold Voltages of Switches
www.datasheet4u.com
(1) PW SW
5
4.5 V
4
3H
2
1.6 V
1
0.6 V
L
012345
Power supply voltage VCC (V)
TA2131FLG
(2) MT SW, BST SW
5
4.5 V
4
3
H
2
1
0.8 V
0.3 V
L
012345
Power supply voltage VCC (V)
“H” level
“L” level
PW SW (V18)
IC operation
IC OFF
“H” level
“L” level
MT SW (V17)
Mute ON
Mute reset
“H” level/OPEN
“L” level
BST SW (V16)
BST ON
BST OFF
6. These capacitors which prevent oscillation of the power amplifier, and are between
the Vref and VCC-GND must have a small temperature coefficient and outstanding
frequency characteristics.
11 2006-04-19
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet TA2131FLG.PDF ] | |
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