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參數(shù)資料
| 型號： | TLV1548QDBREP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 8-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20 |
| 封裝： | GREEN, SSOP-20 |
| 文件頁數(shù)： | 33/35頁 |
| 文件大?。?/td> | 686K |
| 代理商： | TLV1548QDBREP |
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TLV1548EP
LOW VOLTAGE 10BIT ANALOGTODIGITAL CONVERTER
WITH SERIAL CONTROL AND 8 ANALOG INPUTS
SGLS171A JUNE 2003 REVISED DECEMBER 2003
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
input data bits
DATA IN is internally connected to a 4-bit serial input data register. The input data selects a different mode or
selects different analog input channels. The host provides the data word with the MSB first. Each data bit clocks
in on the edge (rising or falling depending on the status of INV CLK and FS) of the I/O CLK sequence. The input
clock can be inverted by grounding INV CLK (see Table 3 for the list of software programmed operations set
by the input data).
Table 3. TLV1548 Software-Programmed Operation Modes
INPUT DATA BYTE
FUNCTION SELECT
A3 A0
COMMENT
FUNCTION SELECT
BINARY
HEX
COMMENT
Analog channel A0 for TLV1548 selected
0000b
0h
Analog channel A1 for TLV1548 selected
0001b
1h
Analog channel A2 for TLV1548 selected
0010b
2h
Analog channel A3 for TLV1548 selected
0011b
3h
Analog channel A4 for TLV1548 selected
0100b
4h
Analog channel A5 for TLV1548 selected
0101b
5h
Analog channel A6 for TLV1548 selected
0110b
6h
Analog channel A7 for TLV1548 selected
0111b
7h
Software power down set
1000b
8h
No conversion result (cleared by any access)
Fast conversion rate (10
s) set
1001b
9h
No conversion result (cleared by setting to fast)
Slow conversion rate (40
s) set
1010b
Ah
No conversion result (cleared by setting to slow)
Self-test voltage (Vref) Vref)/2 selected
1011b
Bh
Output result = 200h
Self-test voltage Vref* selected
1100b
Ch
Output result = 000h
Self-test voltage Vref) selected
1101b
Dh
Output result = 3FFh
Reserved
1110b
Eh
No conversion result
Reserved
1111b
Fh
No conversion result
analog inputs and internal test voltages
The eight analog inputs and the three internal test inputs are selected by the 11-channel multiplexer according
to the input data bit as shown in Table 3. The input multiplexer is a break-before-make type to reduce
input-to-input noise injection resulting from channel switching.
The device can be operated in two distinct sampling modes: normal sampling mode (fixed sampling time) and
extended sampling mode (flexible sampling time). When CSTART is held high, the device is operated in normal
sampling mode. When operated in normal sampling mode, sampling of the analog input starts on the rising edge
of the fourth I/O CLK pulse in the microprocessor interface mode (and on the fourth falling edge of I/O CLK in
the DSP interface mode). Sampling continues for 6 I/O CLK periods. The sample is held on the falling edge of
the tenth I/O CLK pulse in the microprocessor interface mode. The sample is held on the falling edge of the tenth
I/O CLK pulse in the DSP interface mode.The three test inputs are applied to the multiplexer, then sampled and
converted in the same manner as the external analog inputs.
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| TLV1548QDBRG4Q1 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10B 85kSPS ADC Ser. Out 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| TLV1548QDBRQ1 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10B Analog/Digital Converter 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| TLV1549 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL |
| TLV1549C | 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL |
| TLV1549CD | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 3.3V 10bit A/D 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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