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參數(shù)資料
| 型號： | ADS1255IDB |
| 英文描述： | Very Low Noise, 24-Bit Analog-to-Digital Converter |
| 中文描述： | 極低噪聲，24位模擬數(shù)字轉(zhuǎn)換器 |
| 文件頁數(shù)： | 31/39頁 |
| 文件大小： | 427K |
| 代理商： | ADS1255IDB |
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SBAS288D JUNE 2003 REVISED AUGUST 2004
www.ti.com
31
MUX : Input Multiplexer Control Register (Address 01h)
Reset Value = 01h
BIT 7
PSEL3
BIT 6
PSEL2
BIT 5
PSEL1
BIT 4
PSEL0
BIT 3
NSEL3
BIT 2
NSEL2
BIT 1
NSEL1
BIT 0
NSEL0
Bits 7-4
PSEL3, PSEL2, PSEL1, PSEL0
: Positive Input Channel (AIN
P
) Select
0000 = AIN0 (default)
0001 = AIN1
0010 = AIN2 (ADS1256 only)
0011 = AIN3 (ADS1256 only)
0100 = AIN4 (ADS1256 only)
0101 = AIN5 (ADS1256 only)
0110 = AIN6 (ADS1256 only)
0111 = AIN7 (ADS1256 only)
1xxx = AINCOM (when PSEL3 = 1, PSEL2, PSEL1, PSEL0 are “don’t care”)
NOTE: When using an ADS1255 make sure to only select the available inputs.
Bits 3-0
NSEL3, NSEL2, NSEL1, NSEL0
: Negative Input Channel (AIN
N
)Select
0000 = AIN0
0001 = AIN1 (default)
0010 = AIN2 (ADS1256 only)
0011 = AIN3 (ADS1256 only)
0100 = AIN4 (ADS1256 only)
0101 = AIN5 (ADS1256 only)
0110 = AIN6 (ADS1256 only)
0111 = AIN7 (ADS1256 only)
1xxx = AINCOM (when NSEL3 = 1, NSEL2, NSEL1, NSEL0 are “don’t care”)
NOTE: When using an ADS1255 make sure to only select the available inputs.
ADCON: A/D Control Register (Address 02h)
Reset Value = 20h
BIT 7
0
BIT 6
CLK1
BIT 5
CLK0
BIT 4
SDCS1
BIT 3
SDCS0
BIT 2
PGA2
BIT 1
PGA1
BIT 0
PGA0
Bit 7
Bits 6-5
CLK1, CLK0
: D0/CLKOUT Clock Out Rate Setting
00 = Clock Out OFF
01 = Clock Out Frequency = f
CLKIN
(default)
10 = Clock Out Frequency = f
CLKIN
/2
11 = Clock Out Frequency = f
CLKIN
/4
When not using CLKOUT, it is recommended that it be turned off. These bits can only be reset using the RESET pin.
Bits 4-2
SDCS1, SCDS0
: Sensor Detect Current Sources
00 = Sensor Detect OFF (default)
01 = Sensor Detect Current = 0.5
μ
A
10 = Sensor Detect Current = 2
μ
A
11 = Sensor Detect Current = 10
μ
A
The Sensor Detect Current Sources can be activated to verify the integrity of an external sensor supplying a signal to the
ADS1255/6. A shorted sensor produces a very small signal while an open-circuit sensor produces a very large signal.
Bits 2-0
PGA2, PGA1, PGA0
: Programmable Gain Amplifier Setting
000 = 1 (default)
001 = 2
010 = 4
011 = 8
100 = 16
101 = 32
110 = 64
111 = 64
Reserved, always 0 (Read Only)
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| ADS1255IDBT | Very Low Noise, 24-Bit Analog-to-Digital Converter |
| ADS1256IDB | Very Low Noise, 24-Bit Analog-to-Digital Converter |
| ADS1256IDBR | Very Low Noise, 24-Bit Analog-to-Digital Converter |
| ADS1256IDBT | Very Low Noise, 24-Bit Analog-to-Digital Converter |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ADS1255IDBR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 24 Bit 30kSPS Very Lo-Noise Delta-Sigma RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構: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 |
| ADS1255IDBRG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 24 Bit 30kSPS Very Lo-Noise Delta-Sigma RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構: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 |
| ADS1255IDBT | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 24 Bit 30kSPS Very Lo-Noise Delta-Sigma RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構: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 |
| ADS1255IDBT | 制造商:Texas Instruments 功能描述:ADC 24BIT 5V SPI 30MSPS 20SSOP 制造商:Texas Instruments 功能描述:ADC, 24BIT, 5V, SPI, 30MSPS, 20SSOP 制造商:Texas Instruments 功能描述:ADC, 24BIT, 5V, SPI, 30MSPS, 20SSOP; Resolution (Bits):24bit; Sampling Rate:30kSPS; Supply Voltage Type:Single; Supply Voltage Min:4.75V; Supply Voltage Max:5.25V; Supply Current:36mA; Digital IC Case Style:SSOP; No. of Pins:20; ;RoHS Compliant: Yes 制造商:Texas Instruments 功能描述:ADC, 24BIT, 5V, SPI, 30KSPS, 20SSOP ;ROHS COMPLIANT: YES |
| ADS1255IDBTG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 24 Bit 30kSPS Very Lo-Noise Delta-Sigma RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構: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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