- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄165354 > ADS8519IRHBR (TEXAS INSTRUMENTS INC) 3-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQCC32 PDF資料下載
參數(shù)資料
| 型號： | ADS8519IRHBR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 3-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQCC32 |
| 封裝： | 5 X 5 MM, QFN-32 |
| 文件頁數(shù)： | 8/25頁 |
| 文件大?。?/td> | 396K |
| 代理商： | ADS8519IRHBR |
www.ti.com
PRODUCTPREVIEW
TAG FEATURE
SLAS462 – JUNE 2007
Whether reading during sampling or during conversion a SYNC pulse is generated whenever at least one rising
edge of the external clock occurs while the part is not in the read state. In the discontinuous external clock with
SYNC mode a SYNC pulse follows the first rising edge after the read command. The data is shifted out after the
SYNC pulse. The first rising clock edge after the read command generates a SYNC pulse. The SYNC pulse can
be detected on the next falling edge and then the next rising edge. Successively, each bit can be read first on the
falling edge and then on the next rising edge. Thus 17 clock pulses after the read command are required to read
on the falling edge. 18 clock pulses are necessary to read on the rising edge.
Table 2. DATACLK Pulses
DATACLK PULSES REQUIRED
DESCRIPTION
WITH SYNC
WITHOUT SYNC
Read on falling edge of DATACLK
17
16
Read on rising edge of DATACLK
18
17
If the clock is entirely inactive when not in the read state no SYNC, pulse is generated. In this case the first rising
clock edge shifts out the MSB. The MSB can be read on the first falling edge or on the next rising edge. In this
discontinuous external clock mode with no SYNC 16 clocks are necessary to read the data on the falling edge
and 17 clocks for reading on the rising edge. Data always represents the conversion already completed.
The TAG feature allows the data from multiple ADS8519 converters to be read on a single serial line. The
converters are cascaded together using the DATA pins as outputs and the TAG pins as inputs as illustrated in
Figure 22. The DATA pin of the last converter drives the processor's serial data input. Data is then shifted
through each converter, synchronous to the externally supplied data clock, onto the serial data line. The internal
clock cannot be used for this configuration.
The preferred timing uses the discontinuous, external, data clock during the sampling period. Data must be read
during the sampling period because there is not sufficient time to read data from multiple converters during a
conversion period without violating the td11 constraint (see the EXTERNAL DATACLOCK section). The sampling
period must be sufficiently long to allow all data words to be read before starting a new conversion.
Note, in Figure 22, that a NULL bit separates the data word from each converter. The state of the DATA pin at
the end of a READ cycle reflects the state of the TAG pin at the start of the cycle. This is true in all READ
modes, including the internal clock mode. For example, when a single converter is used in the internal clock
mode the state of the TAG pin determines the state of the DATA pin after all 16 bits have shifted out. When
multiple converters are cascaded together this state forms the NULL bit that separates the words. Thus, with the
TAG pin of the first converter grounded as shown in Figure 22 the NULL bit becomes a zero between each data
word.
16
Copyright 2007, Texas Instruments Incorporated
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADSP-21060LCWZ-160 | 48-BIT, 40 MHz, OTHER DSP, CQFP240 |
| ADSP-TS101SKB2250X | 64-BIT, 125 MHz, OTHER DSP, PBGA484 |
| ADT70GR-REEL7 | ANALOG TEMP SENSOR-VOLTAGE, 2.49-2.51V, 1Cel, RECTANGULAR, SURFACE MOUNT |
| ADT7462ACPZ-500RL7 | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 4Cel, SQUARE, SURFACE MOUNT |
| ADTSM66SV | KEYPAD SWITCH, SPST, MOMENTARY-TACTILE, 0.05A, 12VDC, 3.92 N, SURFACE MOUNT-STRAIGHT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADS852 | 制造商:BB 制造商全稱:BB 功能描述:14-Bit, 65MHz Sampling ANALOG-TO-DIGITAL CONVERTER |
| ADS8528 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:12-, 14-, 16-Bit, Eight-Channel, Simultaneous Sampling ANALOG-TO-DIGITAL CONVERTERS |
| ADS8528SPM | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12B,8Ch,Sim Sampling Bipolar Inp ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS8528SPMR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12B,8Ch,Sim Sampling Bipolar Inp ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS8528SRGCR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12B,8Ch,Bipolar Input ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。