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参数资料
| 型号： | ADS1259EVM-PDK |
| 厂商： | Texas Instruments |
| 文件页数： | 35/48页 |
| 文件大小： | 0K |
| 描述： | KIT PERFORMANCE DEMO FOR ADS1259 |
| 标准包装： | 1 |
| ADC 的数量： | 1 |
| 位数： | 24 |
| 采样率（每秒）： | 14k |
| 数据接口： | 串行，SPI? |
| 工作温度： | -40°C ~ 125°C |
| 已用 IC / 零件： | ADS1259 |
| 已供物品： | 2 个板，文档，软件 |
| 其它名称： | 296-30635 ADS1259EVM-PDK-ND |
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SBAS424D
– JUNE 2009 – REVISED AUGUST 2011
SYNCOUT Pin
Connect the SYNCOUT pin to the SYNCIN pin of the PGA280, using a 4.7k
Ω series resistor (placed close to the
ADS1259). The 1M
Ω pull-down resistor is required when the ADS1259 is in power-down mode.
RESET/PWDN Pin
This pin must be high in normal operation. If it is desired to completely power down the device, or to have a
hardware reset control, then connect this pin to a controller. If these functions are not needed, tie the pin high.
(Note that the device can both be reset and SLEEP mode engaged by commands.)
START Pin
If it is desired to control conversions by pin, connect this line to the controller. Otherwise, this line can be tied
high to free-run conversions. The conversions can also be controlled by software commands. In this case, tie the
START pin low.
DRDY Pin
DRDY is an output that indicates when data are ready for readback. Note that the DOUT pin (and also the DRDY
register bit) indicates when data are ready as well, so DRDY connection to a controller is optional.
CS Pin
If the ADS1259 is a single device connected to the SPI bus, then CS can be tied low. Otherwise, for applications
where the ADS1259 shares the bus with another device, CS must be connected.
DOUT Pin
When the ADS1259 SPI is deselected (CS = 1), the DOUT pin is in 3-state mode. A pull-down resistor may be
necessary to prevent floating the controller input pin.
Miscellaneous Digital I/O
Avoid ringing on the digital inputs and outputs. Resistors in series with the trace driving end helps to reduce
ringing by controlling impedances.
SOFTWARE GUIDE
After the power supplies have fully established, allow a minimum of 216 system clocks before beginning
communication to the device. The registers can then be configured by commands via the SPI port. The following
steps detail a suggested procedure to initialize the ADS1259.
1. Send the SDATAC command
<11h>. This command cancels the RDATAC mode. RDATAC mode must be
cancelled before the register write commands.
2. Send the register write command. The following example shows the register write as a block of nine bytes,
starting at register 0 (CONFIG0).
BYTES
DATA
OPERATION
1, 2
01000000, 00001000
Write register opcode bytes, starting at address 0, 9-byte block
3
00000101
CONFIG0; register data, bias the reference, SPI timeout
4
01010000
CONFIG1; checksum enabled, sinc2 filter selection, internal
reference
5
00000011
CONFIG2; Gate Convert mode, 60SPS
6, 7, 8
00000000, 00000000,
OFC[2:0]; 3 bytes for offset, no offset correction
00000000
9, 10, 11
00000000, 00000000,
FSC[2:0]; 3 bytes for gain, no full-scale correction
01000000
40
Copyright
2009–2011, Texas Instruments Incorporated
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相关代理商/技术参数 |
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| ADS1259EVM-PDK | 制造商:Texas Instruments 功能描述:DEVELOPMENT TOOL |
| ADS1259IPW | 功能描述:模数转换器 - ADC Low-Noise 14kSPS 24B ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| ADS1259IPW | 制造商:Texas Instruments 功能描述:A/D CONVERTER (A-D) IC |
| ADS1259IPWR | 功能描述:模数转换器 - ADC Low-Noise 14kSPS 24B ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| ADS1259QPWRQ1 | 功能描述:24 Bit Analog to Digital Converter 1 Input 1 Sigma-Delta 20-TSSOP 制造商:texas instruments 系列:- 包装:剪切带（CT） 零件状态:有效 位数:24 采样率（每秒）:14k 输入数:1 输入类型:差分，单端 数据接口:SPI 配置:ADC 无线电 - S/H:ADC:- A/D 转换器数:1 架构:三角积分 参考类型:外部 电压 - 电源，模拟:5V 电压 - 电源，数字:2.7 V ~ 5.25 V 特性:PGA 工作温度:-40°C ~ 105°C 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商器件封装:20-TSSOP 标准包装:1 |
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