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參數(shù)資料
| 型號： | MAX5407EKA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 6/7頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC POT DIG AUDIO 32TAP SOT23-8 |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 1 |
| 系列： | SOT-PoT™ |
| 接片： | 32 |
| 電阻（歐姆）： | 20k |
| 電路數(shù)： | 1 |
| 溫度系數(shù)： | 標準值 35 ppm/°C |
| 存儲器類型： | 易失 |
| 接口： | 2 線串行（芯片選擇，增/減） |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SOT-23-8 |
| 供應商設備封裝： | SOT-23-8 |
| 包裝： | 標準包裝 |
| 產品目錄頁面： | 1399 (CN2011-ZH PDF) |
| 其它名稱： | MAX5407EKA+TDKR |
MAX5407
Power-On Reset
The power-on reset feature sets the wiper to the maxi-
mum attenuation (tap position 31, -31dB) at power-up.
If CS is initially high, the MAX5407 is in the increment
mode by default.
Zero-Crossing Detection
When the ZCEN input is low, the zero-crossing detect
feature is enabled. This feature reduces the audible
noise (“clicks and pops”) that result from wiper transi-
tions. When zero-crossing detection is enabled, the
wiper changes position only when the voltage at L is
the same as the voltage at H. If no zero crossing is
detected after 50ms, the device will timeout and
change the wiper position.
Digital Logic Inputs
The MAX5407 can interface to +3V logic as well as +5V
logic, while using a +3V to +5V power supply. In order
to minimize the supply current, set all digital inputs low
while the part is inactive.
Applications Information
The MAX5407 is intended for circuits requiring digitally
controlled adjustable voltage or adjustable gain, such
as applications involving volume control.
Volume Control
The zero-crossing feature of the MAX5407 makes it
ideal for applications involving volume control. Figure 3
shows a typical application circuit, where the MAX5407
is followed by an op amp for output buffering and gain.
VCM represents the common voltage around which the
audio signal swings.
Signal Attenuator
Figure 4 shows a typical signal attenuator. Use an op
amp to provide buffering and gain to the output of the
MAX5407. Connect the MAX5407 to the positive input
of a noninverting op amp to select the level of attenua-
tion of the input signal, by digitally controlling the wiper
terminal.
Adjustable Gain
Figure 5 shows how to use the MAX5407 to digitally
adjust the gain of a noninverting op amp configuration.
The MAX5407 has a low 5ppm/°C ratiometric tempco
that allows for a very stable adjustable gain configura-
tion over temperature.
Chip Information
TRANSISTOR COUNT: 1942
32-Tap Audio Logarithmic Taper
Digital Potentiometer
6
_______________________________________________________________________________________
VOUT
VDD
+5V
AUDIO INPUT
VDD
VCM
ZCEN
CS
U/D
H
L
MAX5407
MAX4336
W
+5V
SIGNAL INPUT
VDD
VOUT
VDD
ZCEN
MAX4336
W
CS
U/D
H
L
MAX5407
Figure 3. Volume Control Circuit
Figure 4. Signal Attenuator Circuit
VOUT
VIN
W
LH
MAX5407
VDD
MAX4336
Figure 5. Adjustable Gain Circuit
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| MAX5408EEE | 功能描述:數(shù)字電位計 IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
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| MAX5408EEE+T | 功能描述:數(shù)字電位計 IC Dual Audio Log Taper RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| MAX5408EEE-T | 功能描述:數(shù)字電位計 IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| MAX5408EGE | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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