|
|
PDF BA7785FS Data sheet ( Hoja de datos )
| Número de pieza | BA7785FS | |
| Descripción | Headphone / speaker amplifier | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de BA7785FS (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
|
No Preview Available !
Multimedia ICs
Headphone / speaker amplifier
BA7785FS
The internal linear audio circuits of the BA7785FS include a stereo headphone amplifier, BTL monaural speaker
amplifier, and an electronic volume circuit, making this IC ideal for LCD TVs and notebook computers.
•Applications
LCD TVs, notebook computers, and wordprocessors,
etc.
•Features
1) Internal stereo headphone amplifier that allows for
mixed input, along with a BTL monaural speaker
amplifier.
2) Internal anti-pop circuit, which prevents popping
sounds when the power is turned on.
3) Internal electronic volume and mute circuit.
4) Low-voltage operation (3.3V).
5) Internal input switch that also allows for the input of
computer beeps.
•Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Power supply voltage
Power dissipation
VCC
Pd
Operating temperature
Topr
Storage temperature
Tstg
∗ Reduced by 7.5mW for each increase in Ta of 1°C over 25°C.
When mounted on a 90 × 50 × 1.6mm glass epoxy board.
Limits
18
750∗
– 10 ~ + 70
– 55 ~ + 125
Unit
V
mW
°C
°C
•Recommended operating conditions (Ta = 25°C)
Parameter
Symbol Min. Typ.
Power supply voltage SP / HP VCC 3.0
—
Max.
6.0
Unit
V
1
1 page  
Multimedia ICs
•Electrical characteristics
· Unless otherwise noted, measurement conditions are as follows.
HP VCC = SP VCC = 5V
Ta = 25°C
EVR control
Mute control
Speaker input control
Speaker on / off control
(EVR CTRL pin 1)
(MUTE CTRL pin 3)
(SP IN CTRL pin 9)
(SP ON / OFF CTRL pin 10)
: Max. (HP VCC)
: LOW (MUTE OFF)
: LOW (SP IN1)
: HIGH (SP ON)
Signal frequency = 1kHz
HP amp: RL = 100Ω
SP amp: RL = 8Ω, BTL = operating
∗1: DIN AUDIO
∗2: IHF A
BA7785FS
Parameter
Symbol Min. Typ. Max. Unit
Supply current
I 7.8 12.0 18.5 mA
Supply current power save
Ips 3.5 5.4 8.3 mA
[HP Amp] INPUT: LINE IN L / R, OUTPUT: HP OUT L / R
Output voltage level
VOHP – 5.0 – 3.5 – 2.0 dBV
Channel balance
CBHP – 1.0 0.0 1.0 dB
EVR range
GEVR 70.0 88.0
—
dB
Distortion
THDHP
—
0.3
1.0
%
Maximum rated output voltage
HHP 8.0 10.0 — mW
Output residual noise
VONHP
— – 81.0 – 73.0 dBV
Interchannel crosstalk
CTHP
— – 78.0 – 70.0 dBV
Muting level
MTHP
— – 95.0 – 84.0 dBV
[MIX Amp] INPUT: LINE IN L / R, OUTPUT: MIX OUT
Output level
VOMIX – 15.5 – 13.5 – 11.5 dBV
[SP Amp (BTL) ] INPUT: SP IN 1 / 2, OUTPUT: SP OUT 1 / 2, BTL measurement
Speaker output level
VOSP – 0.25 1.25 2.75 dBV
Distortion
THDSP
—
0.6
1.5
%
Maximum rated output power
PSP 250 300 — mW
Residual output noise
VONSP
— – 98.0 – 90.0 dBV
Speaker-off level
VOSPOFF — – 108.0 – 85.0 dBV
Conditions
No input
No input, SP ON / OFF: L
VIN = – 10.0dBV,
VIN = – 10.0dBV,
VIN = – 10.0dBV, EVR Max-Min difference
VIN = – 10.0dBV, ∗1
VCC = 3.0V, THD = 10%
Rg = 1kΩ, ∗2
VIN = – 6.5dBV, ∗1
VIN = – 6.5dBV, ∗1
VIN = – 20.0dBV
VIN = – 10.0dBV
VIN = – 10.0dBV,
VCC = 3.0V, THD = 10%
Rg = 1kΩ, ∗2
VIN = – 7.0dBV, ∗1, when SP is off
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet BA7785FS.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| BA7785FS | Headphone / speaker amplifier | ROHM Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |