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參數資料
| 型號： | MAX5486EUG+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 3/16頁 |
| 文件大小： | 0K |
| 描述： | IC CNTRL VOL STEREO 24TSSOP |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 類型： | 立體聲音量控制 |
| 應用： | 車載系統，臺式音頻，機頂盒 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-TSSOP（0.173"，4.40mm 寬） |
| 供應商設備封裝： | 24-TSSOP |
| 包裝： | 帶卷 (TR) |
Table 3 shows the LED display as the wipers transition
through various attenuation levels.
A PWM circuit interpolates the high-resolution 32 steps
between the five LEDs over the volume range from 0dB
to -54dB. This feature provides visible indication for the
attenuation levels from 0dB to -54dB. For example,
LED4 brightness level decreases progressively with
each -2dB step from 0dB to -8dB. PWM is disabled in
the range -56dB to mute.
In balance-control mode, only one LED is on at a time
to indicate the current balance setting. Figure 5 shows
the LEDs display for the current balance setting. When
LED2 is on, the display indicates that the channels are
centered or balanced at a set volume level. When LED4
turns on, the balance shifts completely toward the right
channel and the left channel becomes fully attenuated.
Multiple Button Pushes
The MAX5486 does not respond to simultaneous button
pushes. Additionally, a 16ms blocking period affects all
other inputs when releasing any input that was forced low.
The MAX5486 does not respond to any logic input until
the blocking period ends. If multiple-control buttons are
pressed, all wiper-control connections must be released
before the device responds to further commands.
Applications Information
The
Typical Operating Circuit shows a typical volume/
balance application circuit using the MAX5486 in a sin-
gle-supply configuration. The internally generated BIAS
voltage eliminates the need for external op amps, and
the wipers have internal low-power buffers for low dis-
tortion. Connect the W_ outputs of the MAX5486 to the
left and right inputs of a stereo audio amplifier, such as
the MAX9761. The pushbutton potentiometers attenu-
ate the input signals. Use the MODE input to switch
between volume-control and balance-control modes.
MAX5486
Stereo Volume Control with Pushbutton
Interface
______________________________________________________________________________________
11
VOLUME LED OUTPUTS ( 1 = LED IS ON)
VOLUME POSITION
LED0
LED1
LED2
LED3
LED4
0dB to -8dB
11111
-10dB to -18dB
11110
-20dB to -28dB
11100
-30dB to -38dB
11000
-40dB to -52dB
10000
-54dB to mute (-90dB)
00000
Table 3. LED Settings in Volume Mode
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