參數(shù)資料
型號： DS8500-JND+T&R
廠商： Maxim Integrated Products
文件頁數(shù)： 1/7頁
文件大?。?/td> 0K
描述： IC MODEM HART SGL 3.6V 20-TQFN
產(chǎn)品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 2,500
應用： HART 調制解調器
接口： 串行
電源電壓： 2.7 V ~ 3.6 V
封裝/外殼： 20-WQFN 裸露焊盤
供應商設備封裝： 20-TQFN-EP（5x5）
包裝： 帶卷 (TR)
安裝類型： 表面貼裝
AVAILABLE
EVALUATION KIT AVAILABLE
Functional Diagrams
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
General Description
The DS8500 is a single-chip modem with Highway
Addressable Remote Transducer (HART) capabilities
and satisfies the HART physical layer requirements.
The device integrates the modulation and demodulation
of the 1200Hz/2200Hz FSK signal, has very low power
consumption, and needs only a few external compo-
nents due to the integrated digital signal processing.
The input signal is sampled by an analog-to-digital con-
verter (ADC), followed by a digital filter/demodulator.
This architecture ensures reliable signal detection in
noisy environments. The output digital-to-analog con-
verter (DAC) generates a sine wave and provides a
clean signal with phase-continuous switching between
1200Hz and 2200Hz. Low power is achieved by dis-
abling the receive circuits during transmit and vice
versa. The DS8500 is ideal for low-power process con-
trol transmitters.
Applications
4–20mA Loop-Powered Transmitters for
Temperature, Pressure, Flow, and Level
Measurement
HART Multiplexers
HART Modem Interface Connectivity
Features
Single-Chip, Half-Duplex, 1200bps FSK
Modulation and Demodulation
Digital Signal Processing Provides Reliable Input
Signal Detection in Noisy Conditions
Sinusoidal Output Signal with Lowest Harmonic
Distortion
Few External Components Enable a Space-Saving
Solution
Standard Component 3.6864MHz Crystal
Complies to HART Physical Layer Requirements
2.7V to 3.6V Operating Voltage
285A (max) Current Consumption
Space-Saving, 5mm x 5mm x 0.8mm, 20-Pin TQFN
Package
HART Modem
THIN QFN
(5mm
× 5mm)
TOP VIEW
19
20
18
17
7
6
8
DVDD
RST
OCD
9
DVDD
FSK_IN
FSK_OUT
AVDD
AGND
12
DGND
45
15
14
12
11
D_OUT
D_IN
DGND
XTAL2
XTAL1
RTS
DGND
REF
3
13
DGND
16
10
XCEN
DGND
DS8500
+
*EP
*EXPOSED PAD.
Pin Configuration
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
DS8500-JND+
-40
°C to +85°C
20 TQFN-EP*
+
Denotes a lead(Pb)-free/RoHS-compliant package.
*
EP = Exposed pad.
Rev 1; 2/09
DS8500
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相關代理商/技術參數(shù)
參數(shù)描述
DS8500-KIT# 功能描述:界面開發(fā)工具 DS8500 Eval Kit RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
DS850-3 功能描述:線性和開關式電源 12V output 850W 1U x 2U 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）: 安裝風格:Rack 長度: 寬度: 高度:
DS850-3-002 功能描述:線性和開關式電源 12V output 850W 1Ux2Ux11" 5V Standby 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）: 安裝風格:Rack 長度: 寬度: 高度:
DS850-3-004 功能描述:線性和開關式電源 12V output 850W 1U x 2U 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）: 安裝風格:Rack 長度: 寬度: 高度:
DS850-3-006 功能描述:線性和開關式電源 12V output 850W 1U x 2U 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）: 安裝風格:Rack 長度: 寬度: 高度:
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