參數(shù)資料
型號(hào): DC951A
廠商: Linear Technology
文件頁(yè)數(shù): 30/40頁(yè)
文件大?。?/td> 0K
描述: BOARD DELTA SIGMA ADC LTC2481
軟件下載: QuikEval System
設(shè)計(jì)資源: DC951A Design File
DC951A Schematic
標(biāo)準(zhǔn)包裝: 1
系列: Easy Drive™, QuikEval™
ADC 的數(shù)量: 1
位數(shù): 16
采樣率(每秒): 7.5
數(shù)據(jù)接口: I²C,串行,SPI?
工作溫度: 0°C ~ 70°C
已用 IC / 零件: LTC2481
已供物品:
相關(guān)產(chǎn)品: LTC2481HDD#TRPBF-ND - IC ADC DELTA SIGMA 16BIT 10DFN
LTC2481HDD#PBF-ND - IC ADC 16BIT I2C 7.5SPS 10DFN
LTC2481CDD#TRPBF-ND - IC ADC 16BIT I2C 10-DFN
LTC2481IDD#TRPBF-ND - IC ADC 16BIT I2C 10-DFN
LTC2481IDD#PBF-ND - IC ADC 16BIT I2C 10-DFN
LTC2481CDD#PBF-ND - IC ADC 16BIT I2C 10-DFN
LTC2481
36
2481fc
APPLICATIONS INFORMATION
*******************************************************************************/
signed int32 read_LTC2481(char addr, char cong)
{
struct fourbytes
// Dene structure of four consecutive bytes
{
// To allow byte access to a 32 bit int or oat.
int8 te0;
//
int8 te1;
// The make32() function in this compiler will
int8 te2;
// also work, but a union of 4 bytes and a 32 bit int
int8 te3;
// is probably more portable.
};
union
// adc_code.bits32
all 32 bits
{
// adc_code.by.te0
byte 0
signed int32 bits32;
// adc_code.by.te1
byte 1
struct fourbytes by;
// adc_code.by.te2
byte 2
} adc_code;
// adc_code.by.te3
byte 3
// Start communication with LTC2481:
i2c_start();
if(i2c_write(addr | WRITE))// If no acknowledge, return zero
{
i2c_stop();
return 0;
}
i2c_write(cong);
i2c_start();
i2c_write(addr | READ);
adc_code.by.te3 = i2c_read();
adc_code.by.te2 = i2c_read();
adc_code.by.te1 = i2c_read();
adc_code.by.te0 = 0;
i2c_stop();
return adc_code.bits32;
} // End of read_LTC2481()
/*** initialize() **************************************************************
Basic hardware initialization of controller and LCD, send Hello message to LCD
*******************************************************************************/
void initialize(void)
{
// General initialization stuff.
setup_adc_ports(NO_ANALOGS);
setup_adc(ADC_OFF);
setup_counters(RTCC_INTERNAL,RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
// This is the important part - conguring the SPI port
setup_spi(SPI_MASTER|SPI_L_TO_H|SPI_CLK_DIV_16|SPI_SS_DISABLED); // fast SPI clock
CKP = 0; // Set up clock edges - clock idles low, data changes on
CKE = 1; // falling edges, valid on rising edges.
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