參數(shù)資料
型號(hào)： TLV5580DW
廠商： Texas Instruments, Inc.
英文描述： 8-BIT, 80 MSPS LOW-POWER A/D CONVERTER
中文描述： 8位，80 MSPS的低功耗A / D轉(zhuǎn)換器
文件頁(yè)數(shù)： 18/34頁(yè)
文件大?。?/td> 531K
代理商： TLV5580DW
TLV5580
8-BIT, 80 MSPS LOW-POWER A/D CONVERTER
SLAS205A – DECEMBER 1998 – REVISED JANUARY 1999
18
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TLV5580 EVALUATION MODULE
TLV5580 evaluation module
TI provides an evaluation module (EVM) for TLV5580. The EVM also includes a 10b 80 MSPS DAC so that the
user can convert the digitized signal back to the analog domain for functional testing. Performance
measurements can be done by capturing the ADC’s output data.
The EVM provides the following additional features:
Provision of footprint for the connection of an onboard crystal oscillator, instead of using an external clock
input.
Use of TLV5580 internal or external voltage references. In the case of external references, an onboard
circuit is used that derives adjustable bottom and top reference voltages from a bandgap reference. Two
potentiometers allow for the independent adjustments of both references. The full scale ADC range can be
adjusted to the input signal amplitude.
All digital output, control signal I/O (output enable, standby, reference powerdown) and clock I/O are
provided on a single connector. The EVM can thus be part of a larger (DSP) system for prototyping.
Onboard prototyping area with analog and digital supply and ground connections.
Figure 15 shows the EVM schematic.
The EVM is factory shipped for use in the following configuration:
Use of external (onboard) voltage references
External clock input
analog input
A signal in the range between V
(REFBI)
and V
(REFTI)
should be applied to avoid overflow/underflow on connector
J10. This signal is onboard terminated with 50
. There is no onboard biasing of the signal. When using external
(onboard) references, these levels can be adjusted with R7 (V
(REFTI)
) and R6 (V
(REFBI)
). Adjusting R7 causes
both references to shift. R6 only impacts the bottom reference. The range of these signals for which the device
is specified depends on AV
DD
and is shown under the Recommended Operating Conditions.
Internally generated reference levels are also dependent on AV
DD
as shown in the electrical characteristics
section.
clock input
A clock signal should be applied with amplitudes ranging from 0 to AV
DD
with a frequency equal to the desired
sampling frequency on connector J9. This signal is onboard terminated with 50
. Both ADC and DAC run off
the same clock signal. Alternatively the clock can be applied from terminal 1 on connector J11. A third option
is using a crystal oscillator. The EVM board provides the footprint for a crystal oscillator that can be populated
by the end-user, depending on the desired frequency. The footprint is compatible with the Epson EG-8002DC
series of programmable high-frequency crystal oscillators. Refer to the TLV5580 EVM Settings for selecting
between the different clock modes.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLV5580EVM 制造商:Texas Instruments 功能描述:EVAL BD FOR TLV5580 8BIT 80 MSPS HIGH-SPEED A/D CNVRTR - Bulk
TLV5580IDW 功能描述:模數(shù)轉(zhuǎn)換器 - 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
TLV5580IDWG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8Bit 80MSPS 1-Ch High Ch Band 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
TLV5580IDWR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8Bit 80MSPS 1-Ch High Ch Band 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
TLV5580IDWRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8Bit 80MSPS 1-Ch High Ch Band 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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