參數(shù)資料
型號(hào)： MAX5484
廠商： Maxim Integrated Products, Inc.
元件分類： 通用總線功能
英文描述： Audio digital potentiometers
中文描述： 音頻數(shù)字電位器
文件頁數(shù)： 14/21頁
文件大小： 1241K
代理商： MAX5484
M
10-Bit, Nonvolatile, Linear-Taper Digital
Potentiometers
14
______________________________________________________________________________________
SPI-Compatible Serial Interface
Drive SPI/
UD
high to enable the 3-wire SPI-compatible
serial interface (see Figure 3). This write-only interface
contains three inputs: chip select (
CS
), data in
(DIN(U/
D
)), and data clock (SCLK(
INC
)). Drive
CS
low
to load the data at DIN(U/
D
) synchronously into the shift
register on each SCLK(
INC
) rising edge.
The WRITE command (C1, C0 = 00) requires 24 clock
cycles to transfer the command and data (Figure 4a).
The COPY commands (C1, C0 = 10 or 11) use either
eight clock cycles to transfer the command bits (Figure
4b) or 24 clock cycles with the last 16 data bits disre-
garded by the device.
After loading the data into the shift register, drive
CS
high to latch the data into the appropriate control regis-
ter. Keep
CS
low during the entire serial data stream to
avoid corruption of the data. Table 2 shows the com-
mand decoding.
Write Wiper Register
Data written to this register (C1, C0 = 00) controls the
wiper position. The 10 data bits (D9–D0) indicate the
position of the wiper. For example, if DIN(U/
D
) = 00 0000
0000, the wiper moves to the position closest to L. If
DIN(U/
D
) = 11 1111 1111, the wiper moves closest to H.
This command writes data to the volatile random
access memory (RAM), leaving the NV register
unchanged. When the device powers up, the data
stored in the NV register transfers to the wiper register,
moving the wiper to the stored position. Figure 5 shows
how to write data to the wiper register.
CLOCK EDGE
Bit Name
Write Wiper Register
1
—
0
2
—
0
3
4
5
—
0
6
—
0
7
—
0
8
—
0
9
10
D8
D8
11
D7
D7
12
D6
D6
13
D5
D5
14
D4
D4
15
D3
D3
16
D2
D2
17
D1
D1
18
D0
D0
19
—
X
…
…
…
24
—
X
C1
0
C0
0
D9
D9
Copy Wiper Register
to NV Register
0
0
1
0
0
0
0
0
—
—
—
—
—
—
—
—
—
—
—
…
—
Copy NV Register to
Wiper Register
0
0
1
1
0
0
0
0
—
—
—
—
—
—
—
—
—
—
—
…
—
Table 2. Command Decoding*
*
D9 is the MSB and D0 is the LSB.
X = Don’t care.
CS
t
CSO
t
CSS
t
CL
t
CH
t
DH
t
DS
t
CP
t
CSH
t
CSW
t
CS1
SCLK(INC)
DIN(U/D)
Figure 3. SPI-Compatible Serial-Interface Timing Diagram (SPI/
UD
= 1)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5484ETE 功能描述:數(shù)字電位計(jì) 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(chǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
MAX5484ETE+ 功能描述:數(shù)字電位計(jì) IC 10-Bit Nonvolatile Linear-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(chǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
MAX5484ETE+T 功能描述:數(shù)字電位計(jì) IC 10-Bit Nonvolatile Linear-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(chǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
MAX5484ETE-T 功能描述:數(shù)字電位計(jì) 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(chǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
MAX5484EUD 功能描述:數(shù)字電位計(jì) 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(chǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
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