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參數(shù)資料
| 型號(hào)： | ISL22446 |
| 廠商： | Intersil Corporation |
| 英文描述： | Low Noise, Low Power, SPI Bus, 128 Taps(低噪聲,低功率，SPI總線, 128抽頭電位器) |
| 中文描述： | 低噪聲，低功耗，SPI總線，128絲錐（低噪聲，低功率和SPI總線，128抽頭電位器） |
| 文件頁數(shù)： | 12/13頁 |
| 文件大小： | 465K |
| 代理商： | ISL22446 |
12
FN6181.0
July 17, 2006
Applications Information
Communicating with ISL22446
Communication with ISL22446 proceeds using SPI interface
through the ACR (address 1000b), IVRi (addresses 0000b,
0001b, 0010b and 0011b) and WRi (addresses 0000b,
0001b, 0010b and 0011b) registers.
The wiper of the potentiometer is controlled by the WRi
register. Writes and reads can be made directly to these
registers to control and monitor the wiper position without
any non-volatile memory changes. This is done by setting
MSB bit at address 1000b to 1.
The non-volatile IVRi stores the power up value of the wiper.
IVRs are accessible when MSB bit at address 1000b is set
to 0. Writing a new value to the IVRi register will set a new
power up position for the wiper. Also, writing to this register
will load the same value into the corresponding WRi as the
IVRi. Reading from the IVRi will not change the WRi, if its
contents are different.
Examples:
A. Writing to the IVR:
This sequence will write a new value (77h) to the IVR2(non-volatile):
Set the ACR (Addr 1000b) for NV write (40h)
Send the ID byte, Instruction Byte, then the Data byte
0 1 0 1 0 0 0 0 1 1 0 0 1 0
0
0
0
1
0
0
0
0
0
0
(Sent to SDI)
Set the IVR (Addr 0010b) to 77h
Send the ID byte, Instruction Byte, then the Data byte
0 1 0 1 0 0 0 0 1 1 0 0 0 0
1
0
0
1
1
1
0
1
1
1
(Sent to SDI)
B. Reading from the WR:
This sequence will read the value from the WR3 (volatile):
Write to ACR first to access the volatile WRs
Send the ID byte, Instruction Byte, then the Data byte
0 1 0 1 0 0 0 0 1 1 0 0 1 0
0
0
1
1
0
0
0
0
0
0
(Sent to SDI)
Read the data from WR3 (Addr 0011b)
Send the ID byte, Instruction Byte, then Read the Data byte
0 1 0 1 0 0 0 0 1 0 1 1 0 0
1
1
x
x
x
x
x
x
x
x
(Out on SDO)
ISL22446
:
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參數(shù)描述 |
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| ISL22446UFRT20Z | 功能描述:數(shù)字電位計(jì) IC 128 TAP FL RNG IND QD DCP 20LD 4X4 TQFN 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 |
| ISL22446UFRT20Z-TK | 功能描述:數(shù)字電位計(jì) IC 128 TAP FL RNG IND QD DCP 20LD 4X4 TQFN 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 |
| ISL22446UFV20Z | 功能描述:數(shù)字電位計(jì) IC 128 TAP FL RNG IND QD DCP 20LD 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 |
| ISL22446UFV20Z-TK | 功能描述:數(shù)字電位計(jì) IC 128 TAP FL RNG IND QD DCP 20LD 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 |
| ISL22446WFRT20Z | 功能描述:數(shù)字電位計(jì) IC 128 TAP FL RNG IND QD DCP 20LD 4X4 TQFN 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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