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| 型号： | TLC2554CPWG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | ADC |
| 英文描述： | 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
| 封装： | GREEN, PLASTIC, TSSOP-16 |
| 文件页数： | 46/48页 |
| 文件大小： | 1074K |
| 代理商： | TLC2554CPWG4 |
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TLC2554, TLC2558
5-V, 12-BIT, 400 KSPS, 4/8 CHANNEL, LOW POWER,
SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTO POWER DOWN
SLAS220A –JUNE 1999
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
control and timing (continued)
configuration
Configuration data is stored in one 12-bit configuration register (CFR) (see Table 2 for CFR bit definitions). Once
configured after first power up, the information is retained in the H/W or S/W power-down state. When the device
is being configured, a write CFR cycle is issued by the host processor. This is a 16-bit write. If the SCLK stops
after the first 8 bits are entered, then the next eight bits can be taken after the SCLK is resumed. The status of
the CFR can be read with a read CFR command.
Table 2. TLC2554/TLC2558 Configuration Register (CFR) Bit Definitions
BIT
DEFINITION
D(15–12)
All zeros, nonprogrammable
D11
Reference select
0: External
1: Internal
D10
Output select
0: Unipolar straight binary
1: 2’s complement
D9
Sample period select
0: Short sampling 12 SCLKs (1x sampling time)
1: Long sampling 24 SCLKs (2x sampling time)
D8
Conversion clock source select
0: Conversion clock = SCLK
1: Conversion clock = SCLK/2
D7
Input select
0: Normal
1: Pseudo differential CH A2(2558) or CH A1 (2554) is the differential input
D(6,5)
Conversion mode select
00: Single shot mode
01: Repeat mode
10: Sweep mode
11: Repeat sweep mode
D(4,3)
TLC2558
TLC2554
Sweep auto sequence select
00: 0–1–2–3–4–5–6–7
01: 0–2–4–6–0–2–4–6
10: 0–0–2–2–4–4–6–6
11: 0–2–0–2–0–2–0–2
Sweep auto sequence select
00: N/A
01: 0–1–2–3–0–1–2–3
10: 0–0–1–1–2–2–3–3
11: 0–1–0–1–0–1–0–1
D2
EOC/INT – pin function select
0: Pin used as INT
1: Pin used as EOC
D(1,0)
FIFO trigger level (sweep sequence length)
00: Full (INT generated after FIFO level 7 filled)
01: 3/4 (INT generated after FIFO level 5 filled)
10: 1/2 (INT generated after FIFO level 3 filled)
11: 1/4 (INT generated after FIFO level 1 filled)
These bits only take effect in conversion modes 10 and 11.
sampling
The sampling period starts after the first 4 input data are shifted in if they are decoded as one of the conversion
commands. These are select analog input (channel 0 through 7) and select test (channel 1 through 3).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TLC2554CPWR | 功能描述:模数转换器 - ADC 12-bit 400 KSPS 4-Ch Serial w/Powerdown 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 |
| TLC2554CPWRG4 | 功能描述:模数转换器 - ADC 12-bit 400 KSPS 4-Ch Serial w/Powerdown 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 |
| TLC2554ID | 功能描述:模数转换器 - ADC 12bit3 200kSPS SAR 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 |
| TLC2554IDG4 | 功能描述:模数转换器 - ADC 12-bit 400 KSPS 4-Ch Serial w/Powerdown 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 |
| TLC2554IDR | 功能描述:模数转换器 - ADC 12-bit 400 KSPS 4-Ch Serial w/Powerdown 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 |
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