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參數(shù)資料
| 型號(hào)： | DS1800 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | Dual Inverting Log Gain/Attenuator(雙路反相對(duì)數(shù)放大/衰減器) |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDIP20 |
| 封裝： | 0.300 INCH, DIP-20 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 96K |
| 代理商： | DS1800 |
DS1800
Dual Inverting Log Gain/Attenuator
DS1800
PRODUCT PREVIEW
032098 1/13
FEATURES
Ultra–low power consumption
Operates from 3V or 5V supplies
Two digitally controlled, 128–position potentiometers
including mute
Logarithmic Gain Characteristics
Zero–crossing detection circuitry eliminates noise
caused by discrete wiper position changes
Two Control Interfaces
– 3–wire serial CPU control
– Push–button control
20–pin DIP (300 Mil), 20–pin SOIC (300 Mil), and
20–pin (173 Mil) TSSOP packaging available
Operating Temperature:
– Commercial: 0
°
C to 70
°
C
– Industrial: –40
°
C to +85
°
C
Software and hardware mute
Resistance Available: 53K
PIN ASSIGNMENT
V
CC
P1G
P1A
P0G
P0A
MUTE
AGND
IN1
OUT1
W1
GND
C
OUT
CLK
D
RST
ZCEN
MODE
W0
OUT0
IN0
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
20–PIN DIP (300 MIL)
20–20–PIN TSSOP
See Mech. Drawings
Section
PIN DESCRIPTION
OUT0,OUT1
IN0, IN1
W0,W1
V
CC
RST
CLK
D
C
OUT
P0G,P1G
P0A,P1A
ZCEN
MUTE
AGND
GND
– Low–end of resistor
– High–end of resistor
– Wiper Terminal
– 3V or 5V Power Supply Input
– Serial Port Reset Input
– Serial Port Clock Input
– Serial Port Data Input
– Cascade Data Output
– Gain Input Pot Controls
– Attenuation Input Pot Controls
– Zero–Crossing Detect Input
– Hardware Mute Control Input
– Analog Ground
– Ground
DESCRIPTION
The DS1800 is a dual audio–taper potentiometer
designed specifically for use in the feedback path of the
inverting configuration of an operational amplifier (see
Figure 2). In this configuration, the DS1800 provides a
V
O
/V
I
relationship of –20log(R
F
/R
I
) giving a gain/attenu-
ation range covering +20 dB to –63 dB. Each poten-
tiometer has a total of 129 positions including mute. The
DS1800 provides five areas of resolution which include
0.25 dB per step from +20 dB to +3 dB, 0.5 dB per step
from +3 dB to –12 dB, 1 dB from –12 dB to –27 dB, and
from –27 dB to –47 dB; 2 dB per step, and from –47 dB to
–63 dB; 4 dB per step. The mute position provides 100
dB of attenuation.
The DS1800 has two control interfaces (see Figure 1).
The first is a 3–wire serial CPU interface consisting of
RST, CLK, and D. The second interface is a contact–
closure interface, allowing easy push–button control
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1800-3 | 功能描述:線性和開關(guān)式電源 12V output, 1800W 1U x 4.2" x 11" RoHS:否 制造商:TDK-Lambda 產(chǎn)品:Switching Supplies 開放式框架/封閉式:Enclosed 輸出功率額定值:800 W 輸入電壓:85 VAC to 265 VAC 輸出端數(shù)量:1 輸出電壓（通道 1）:20 V 輸出電流（通道 1）:40 A 商用/醫(yī)用: 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:Rack 長度: 寬度: 高度: |
| DS1801 | 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 |
| DS1801+ | 功能描述:數(shù)字電位計(jì) IC Dual Audio Taper Potentiometer 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 |
| DS1801E | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Dual Audio Taper Potentiometer |
| DS1801E-014 | 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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