- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄1925 > ISL22102IV20Z (Intersil)IC POT DUAL 32TAP 20-TSSOP PDF資料下載
參數(shù)資料
| 型號： | ISL22102IV20Z |
| 廠商： | Intersil |
| 文件頁數(shù)： | 10/11頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC POT DUAL 32TAP 20-TSSOP |
| 標(biāo)準(zhǔn)包裝： | 740 |
| 系列： | XDCP™ |
| 接片： | 32 |
| 電阻（歐姆）： | 18.5k |
| 電路數(shù)： | 2 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 10 ppm/°C |
| 存儲器類型： | 易失 |
| 接口： | 2 線按鈕 |
| 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： | 20-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-TSSOP |
| 包裝： | 管件 |
8
FN6788.1
January 14, 2010
VTH
This terminal allows to set up the threshold level of audio
input to be detected. When audio input to either Left or Right
channel is below this threshold - the FLAG output is Low;
when audio input is above this threshold - the FLAG output
is High. The threshold level is maintained over an external
resistor RTH placed between VTH pin, which is a source of
±10A current, and VB pin. To calculate the actual threshold
we need to multiply 10A by a resistor value and divide the
result by 1000. For example, a 100k
Ω resistor is a subject of
1mV audio detection threshold, e.g. 10A*100k/1000 = 1mV.
Note, the VTH threshold multiplied by 1000 should not exceed
1/2 of AVCC. The maximum resistor value for detection
threshold can be found in Table 2.
Device Operation
There are four sections in the ISL22102: the input control,
counter and decode section, two resistor arrays with
buffered wiper outputs, reference voltage generator of VB
output, and audio detection block with programmable delay
FLAG output. The input control section operates just like an
up/down counter. The output of this counter is decoded to
turn on a single electronic switch, connecting a point on the
resistor array to the wiper output. Each resistor array is
comprised of 31 individual resistors connected in series and
its wiper output pass an attenuated audio input to the power
amplifier. Both resistor arrays have logarithmic taper with
-72dB dynamic range as shown in Table 2.
The ISL22102 is designed to interface directly to two
push-button switches for effectively moving the wipers up or
down. The UP and DN inputs increment or decrement 5-bit
counters respectively. The output of these counters are
decoded to select one of the thirty-two wiper positions along
the resistive array. The wiper increment input, UP, and the
wiper decrement input, DN, are both connected to an
internal pull-up so that they normally remain High. When
pulled Low by an external push button switch or a logic Low
level input, the wipers will be switched to the next adjacent
tap position.
Internal debounce circuitry prevents inadvertent switching of
the wipers position if UP or DN remain Low for less than
15ms, typical. Each of the buttons can be pushed either
once for a single increment/decrement or continuously for a
multiple increments/decrements. When making a continuous
push, after the first second, the device is going to auto
increment/decrement mode. If the button is held for longer
than 1s, the wiper position will be auto
incremented/decremented with a rate of 4Hz for 4s, and with
a rate of 8Hz after that. As soon as the button is released,
the ISL22102 will return to a low power standby condition.
Each wiper acts like its mechanical equivalent and does not
move beyond the last position. That is, the counter does not
wrap around when clocked to either extreme.
Table 3 contains information about attenuation level for each
tap position.
TABLE 2. RTH vs AVCC
AVCC (V)
MAX RTH (kΩ)
5.5
188
5.25
177
5.0
167
4.75
156
4.5
146
4.25
135
4.0
125
3.75
115
3.5
104
3.25
94
3.0
83
2.75
73
TABLE 3. WIPER TAP POSITION vs ATTENUATION
TAP POSITION
ATTENUATION
00
1-2dB
2-4dB
3-6dB
4-8dB
5
-10dB
6
-12dB
7
-14dB
8
-16dB
9
-18dB
10
-20dB
11
-22dB
12
-24dB
13
-26dB
14
-28dB
15
-30dB
16
-32dB
17
-34dB
18
-36dB
19
-38dB
20
-40dB
21
-42dB
22
-44dB
23
-46dB
24
-48dB
ISL22102
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISL22313UFU10Z-TK | IC POT DGTL 256TP LN LP 10-MSOP |
| ISL22316WFU10Z-TK | IC POT DGTL 128TP LN LP 10-MSOP |
| ISL22317WFRTZ | IC POT DGTL 128TP LN LP 10-TDFN |
| ISL22319UFU8Z-TK | IC POT DGTL 128TP LN LP 8-MSOP |
| ISL22323TFV14Z | IC POT DGTL 256TP LN LP 14-TSSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL22102IV20Z-EVAL | 功能描述:數(shù)字電位計(jì)開發(fā)工具 ISL22102IV20Z-EVAL D EMO BRD RoHS:否 制造商:Arduino 產(chǎn)品:TinkerKit Rotary Potentiometers 工具用于評估:TinkerKit 電阻:4.7 kOhms 工作電源電壓:0 V to 5 V |
| ISL22102IV20Z-TK | 功能描述:數(shù)字電位計(jì) IC 32 TAP PUSH-BUTTON DL AUD LOG W/BUFR 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| ISL22313 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Single Digitally Controlled Potentiometer XDCP |
| ISL22313TFU10Z | 功能描述:數(shù)字電位計(jì) IC 256 TAP FL RNG IND DCP 10LD 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| ISL22313TFU10Z-TK | 功能描述:數(shù)字電位計(jì) IC 256 TAP FL RNG IND DCP 10LD 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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。