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參數(shù)資料
| 型號： | MAX5486EUG+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CNTRL VOL STEREO 24TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 立體聲音量控制 |
| 應(yīng)用： | 車載系統(tǒng)，臺(tái)式音頻，機(jī)頂盒 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-TSSOP |
| 包裝： | 帶卷 (TR) |
General Description
The MAX5486 dual 40k
Ω logarithmic taper volume con-
trol features a debounced pushbutton up/down interface
that controls volume and balance in audio applications.
Each potentiometer has 32 log-spaced tap points with a
buffered wiper output to replace mechanical potentiome-
ters. An integrated bias generator provides the required
((VDD + VSS) / 2) bias voltage, eliminating the need for
costly external op-amp circuits in unipolar audio applica-
tions. A mode-indicator LED output indicates volume or
balance control. Five integrated LED drivers indicate vol-
ume level or balance settings, depending on the status of
the mode indicator.
Use the MAX5486 digital inputs with momentary con-
tact single-pole/single-throw (SPST) pushbutton switch-
es. Each input includes internal debounced circuitry
and a pullup resistor to VLOGIC.
The MAX5486 advances the wiper setting once per but-
ton push. Maxim’s proprietary SmartWiper control
eliminates the need for a microcomputer to increase the
wiper transition rate. The accelerated auto-advance
feature provides a wiper-changing rate at 4Hz for hold-
ing the control input low for more than 250ms and at
8Hz after 500ms and then at 11Hz after 1000ms (see
Table 2).
All of the MAX5486’s pushbutton inputs are debounced.
The mute input allows a single pushbutton to change
between volume control and the -90dB (typ) mute set-
ting. The mode input toggles between volume and bal-
ance control. The click-and-pop suppression feature
minimizes the audible noise generated by wiper transi-
tions. The typical total harmonic distortion plus noise
(THD+N) for the device is 0.003%. The MAX5486 pro-
vides a nominal temperature coefficient of 35ppm/°C
end-to-end and 5ppm/°C ratiometrically and a nominal
resistance of 40k
Ω per potentiometer. The MAX5486 is
available in a 24-pin TSSOP package and is specified
for operation over the -40°C to +85°C extended temper-
ature range.
Applications
Home-Theater Speakers
Desktop Speakers
Portable Media Players
Docking Stations
Automotive Rear-Seat Multimedia
Features
Debounced Pushbutton Interface
SmartWiper Control Advances Wiper Rate
Low-Power Wiper Buffers Provide 0.003% THD+N
Bias Generator Eliminates External Op Amps
Five-Segment LED Volume/Balance Indicator
Clickless Switching
Logarithmic Taper Volume Control with (31)
2dB Steps
Single +2.7V to +5.5V or Dual ±2.7V Supply
Voltage Operation
Power-On Reset to -12dBFS Wiper Position
MUTE Function Toggles to 90dB (typ)
Low 1A Shutdown Supply Current
40kΩ End-to-End Fixed Resistance Value
Small, 24-Pin TSSOP Package
MAX5486
Stereo Volume Control with Pushbutton
Interface
________________________________________________________________
Maxim Integrated Products
1
19-0672; Rev 0; 11/06
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Ordering Information
VDD
VSS
(VDD + VSS) / 2
VLOGIC
VPEAK
HR
LR
WR
SHDN
LEFT INPUT
RIGHT INPUT
MODEIND
MAX9761
LL
HL
WL
VLOGIC
LEDIND4
LEDIND3
LEDIND0
GND
MUTE
LEDIND1
LEDIND2
BIAS
BIASCAP
MAX5486
UP/BALL DN/BALR
MODE
1M
Ω
(VDD + VSS) / 2
VPEAK
Typical Operating Circuit
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX5486EUG+
-40°C to +85°C
24 TSSOP
U24-1
SmartWiper is a trademark of Maxim Integrated Products, Inc.
+
Denotes lead-free package.
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