参数资料
型号: DC951A
厂商: Linear Technology
文件页数: 28/40页
文件大小: 0K
描述: BOARD DELTA SIGMA ADC LTC2481
软件下载: QuikEval System
设计资源: DC951A Design File
DC951A Schematic
标准包装: 1
系列: Easy Drive™, QuikEval™
ADC 的数量: 1
位数: 16
采样率(每秒): 7.5
数据接口: I²C,串行,SPI?
工作温度: 0°C ~ 70°C
已用 IC / 零件: LTC2481
已供物品:
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LTC2481
34
2481fc
APPLICATIONS INFORMATION
/*
LTC248X.h
Processor setup and
Lots of useful denes for conguring the LTC2481 and LTC2485.
*/
#include <16F73.h>
// Device
#use delay(clock=6000000)
// 6MHz clock
//#fuses NOWDT,HS, PUT, NOPROTECT, NOBROWNOUT
// Conguration fuses
#rom 0x2007={0x3F3A} // Equivalent and more reliable fuse cong.
#use I2C(master, sda=PIN_C5, scl=PIN_C3, SLOW)// Set up i2c port
#include “PCM73A.h”
// Various denes
#include “lcd.c”
// LCD driver functions
// Useful denes for the LTC2481 and LTC2485 - OR them together to make the
// 8 bit cong word.
#dene READ
0x01
// bitwise OR with address for read or write
#dene WRITE
0x00
#dene LTC248XADDR 0b01001000
// The one and only LTC248X in this circuit,
// with both address lines oating.
// Select gain - 1 to 256 (also depends on speed setting)
#dene GAIN1
0b00000000
// G = 1
(SPD = 0), G = 1
(SPD = 1)
#dene GAIN2
0b00100000
// G = 4
(SPD = 0), G = 2
(SPD = 1)
#dene GAIN3
0b01000000
// G = 8
(SPD = 0), G = 4
(SPD = 1)
#dene GAIN4
0b01100000
// G = 16
(SPD = 0), G = 8
(SPD = 1)
#dene GAIN5
0b10000000
// G = 32
(SPD = 0), G = 16
(SPD = 1)
#dene GAIN6
0b10100000
// G = 64
(SPD = 0), G = 32
(SPD = 1)
#dene GAIN7
0b11000000
// G = 128 (SPD = 0), G = 64
(SPD = 1)
#dene GAIN8
0b11100000
// G = 256 (SPD = 0), G = 128 (SPD = 1)
// Select ADC source - differential input or PTAT circuit
#dene VIN
0b00000000
#dene PTAT
0b00001000
// Select rejection frequency - 50, 55, or 60Hz
#dene R50
0b00000010
#dene R55
0b00000000
#dene R60
0b00000100
// Speed settings is bit 7 in the 2nd byte
#dene SLOW
0b00000000 // slow output rate with autozero
#dene FAST
0b00000001 // fast output rate with no autozero
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