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參數(shù)資料
| 型號： | THS1041EVM |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Evaluation Module for the THS1041 10-Bit ADC(10位模數(shù)轉(zhuǎn)換器THS1041評估模塊) |
| 中文描述： | 評估模塊的THS1041 10位ADC（10位模數(shù)轉(zhuǎn)換器THS1041評估模塊） |
| 文件頁數(shù)： | 19/31頁 |
| 文件大?。?/td> | 433K |
| 代理商： | THS1041EVM |
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Circuit Function
3-2
3.1
Circuit Function
The following paragraphs describe the function of individual circuits. Refer to
Chapter 4 for jumper configurations for various modes of operation, and to the
relevant data sheet for device operating characteristics.
3.1.1
Inputs
The ADC has either transformer-coupled input from a single-ended source,
true differential analog inputs, or a single-ended input. These inputs are pro-
vided via SMA connectors J1, J2, and J3 on the EVM and can be configured
in three ways as discussed in the following sections.
3.1.1.1
Differential Interface
For true differential input, the positive differential signal is connected to J1 and
the negative differential signal is connected to J3. The jumpers on the board
are then configured as follows: SJP1 IN, SJP2 pin 1
–
2, SJP3 IN, SJP6 pin 1
–
2,
W1, W2, and T1 removed. The inputs have 50-
terminators and are
ac-coupled.
3.1.1.2
Single-Ended Transformer Coupled Interface
For transformer-coupled ADC input using a single ended source, a positive
signal is applied to SMA J2. The jumpers on the board are then configured as
follows: SJP1 OUT, SJP2 pin 1
–
2, SJP3 OUT, SJP6 pin 1
–
2, W1 pin 1
–
2, and
W2 pin 1
–
2. Transformer T1 performs the single ended to differential signal
conversion.
3.1.1.3
Single-Ended Interface
For single-ended input, a positive signal is applied to SMA J1. The jumpers on
the board are then configured as follows: SJP1 IN, SJP2 pin 1
–
2, SJP3 IN,
SJP6 pin 1
–
2, C6 replaced with a short, W1, W2, and T1 removed. A dc source
is then applied to SMA J3 to provide the midscale voltage for the positive input
signal at J1.
3.1.1.4
Clock Inputs
The EVM provides separate inputs for the ADC clock and output buffer clock.
This allows the user to send a modified version of the ADC clock (inverted,
delayed, etc.) with the output data to generate the required setup and hold
times for the users interface. The ADC clock input is SMA connector J4 with
50-
termination. The buffered output clock input is SMA connector J14 with
50-
termination. The clock inputs should be 50-
square wave signals, 3.3 V
referenced to ground, with a duty cycle of 50
±
5%. The EVM can operate with
only one clock input by installing SJP4 and SJP5, and removing R34. Since
the input clock will now be terminated at both loads, the clock signal amplitude
should be adjusted to provide the appropriate levels at the loads.
3.1.1.5
Control Inputs
The THS1040 has two discrete inputs to control the operation of the device.
Table 3
–
1 describes the operation of the EVM jumpers for THS1040
operation.
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參數(shù)描述 |
|---|---|
| THS1041IDW | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10 Bit 40 MSPS Lo-Pwr 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 |
| THS1041IDWG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10 Bit 40 MSPS Lo-Pwr 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 |
| THS1041IDWR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10 Bit 40 MSPS Lo-Pwr 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 |
| THS1041IDWRG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10 Bit 40 MSPS Lo-Pwr 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 |
| THS1041IPW | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10 Bit 40 MSPS Lo-Pwr 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 |
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