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PDF LC7535M Data sheet ( Hoja de datos )
| Número de pieza | LC7535M | |
| Descripción | Electronic Volume/Loudness Control with Serial Data Control and High Voltage-Handling Capacity | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : EN5760
CMOS IC
LC7535M
Electronic Volume/Loudness Control with Serial Data
Control and High Voltage-Handling Capacity
Overview
Feature
The LC7535M is an electronic volume and loudness
control IC that provides volume, balance, and loudness
functions with a minimal number of external components
and that can be controlled electronically.
Functions
• Volume: Provides 81 positions from 0 dB to –79 dB in
1-dB steps and –∞. A balance function can be
implemented by controlling the left and right volume
levels independently.
• Loudness: A loudness function can be implemented by
attaching external capacitors at the output tap provided
at the –20-dB position in the 5-dB step volume control.
• S (select) pin: Up to two LC7535M chips can be used on
the same bus.
• Serial data input: The LC7535M supports
communication with the controller in the CCB format.
• High voltage-handling capacity: ±16 V.
Package Dimensions
unit: mm
3216A-MFP30S
[LC7535M]
SANYO: MFP30S
• CCB is a trademark of SANYO ELECTRIC CO., LTD.
• CCB is SANYO’s original bus format and all the bus
addresses are controlled by SANYO.
Specifications
Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V
Parameter
Maximum supply voltage
Maximum input voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VDD max
VEE max
VCC max
VIN max1
VIN max2
VIN max3
Pd max
Topr
Tstg
Conditions
VEE ≤ VSS < VCC < VDD
VEE ≤ VSS < VCC < VDD
VEE ≤ VSS < VCC < VDD
CL, DI, CE
L5dBIN, R5dBIN, L1dBIN, R1dBIN
S
Ta ≤ 75°C
Ratings
VSS to VSS + 18
VSS – 18 to VSS
VSS to VSS + 7
0 to VCC + 0.3
VEE – 0.3 to VDD + 0.3
VCC – 0.3 to VDD + 0.3
250
–30 to +75
–40 to +125
Unit
V
V
V
V
V
V
mW
°C
°C
Allowable Operating Ranges at Ta = 25°C, VSS = 0 V
Parameter
Supply voltage
Input high-level voltage
Input low-level voltage
Symbol
Conditions
VDD
VEE
VCC
VIH1
VIH2
VIL1
VIL2
VDD
VEE
VCC
CL, DI, CE
S
CL, DI, CE
S
Ratings
min typ max
Unit
VCC + 4.5
–16
16 V
0V
4.5 5
5.5 V
0.8 VCC
0.8 × (VDD – VCC) + VCC
VSS
VCC
VCC V
VDD V
0.2 VCC V
0.2 × (VDD – VCC) + VCC
V
Continued on next page.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
53098RM (OT) No. 5760-1/9
1 page  
LC7535M
Pin Descriptions
Pin No. Pin
Function
2 L5dBIN
• 5-dB step attenuator inputs
These inputs must be driven by low-impedance circuits.
29 R5dBIN
3 LCT1
28 RCT1 • Loudness circuit connections
Connect the high-band compensation capacitors between the CT1 and 5dBIN pins, and
4
LCT2
connect the low band compensation capacitors between the CT2 and the VM pins.
27 RCT2
5 L5dBOUT
• 5-dB step attenuator outputs
These outputs must be accepted by circuits with an impedance of between 47 kΩ and 1 MΩ.
26 R5dBOUT
7 L1dBIN
• 1-dB step attenuator inputs
These inputs must be driven by low-impedance circuits.
24 R1dBIN
8 L1dBOUT
• 1-dB step attenuator outputs
These outputs must be accepted by circuits with an impedance of between 47 kΩ and 1 MΩ.
23 R1dBOUT
9 LVM • Common connections for the volume control circuit. The impedance of the printed circuit board
pattern connected to these pins must be kept as low as possible. Since the LVM, RVM, and VSS
pins are not connected internally, they must be connected externally as required by the various
specifications. When a single-sided power supply is used, the capacitors between VM and VSS
become the residual resistance when the volume control is set at its maximum attenuation. This
22
RVM
means that care is required in selecting the values of these capacitors.
• Selection input for the address code in the data format. If this pin is connected to VDD, data will
12 S be accepted when the address code is 9, and if connected to VCC, data will be accepted when
the address code is 8.
17 CL
18 DI
19 CE
10 VEE
13
14
21
1, 6, 11,
15, 16,
20, 25,
30
VDD
VSS
VCC
NC
• Input pins for the serial data used to control the device.
These inputs must have an amplitude of 0 to 5 V. In applications in which any of microcontroller
CL, DI, or CE may go high in backup mode (when VDD = VCC = 0 V), the signal lines must have
series resistors of at least 2 kΩ inserted.
• Power supply connections. All these pins must be connected to the corresponding power
supply voltage. When power is first applied, the VCC voltage must not rise before VDD.
• Unconnected (NC) pins
Do not connect any signals or devices to these pins.
Equivalent circuit
No. 5760-5/9
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet LC7535M.PDF ] | |
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