參數(shù)資料
型號(hào)： TLV2545EVM
廠商： Texas Instruments
文件頁(yè)數(shù)： 27/32頁(yè)
文件大?。?/td> 0K
描述： EVAL MOD FOR TLV2545
產(chǎn)品培訓(xùn)模塊： Data Converter Basics
標(biāo)準(zhǔn)包裝： 1
ADC 的數(shù)量： 1
位數(shù)： 12
采樣率（每秒）： 200k
數(shù)據(jù)接口： SPI?
輸入范圍： 0 ~ 5.5 V
在以下條件下的電源（標(biāo)準(zhǔn)）： 2.7mW @ 2.7V，7.5mW @ 5V
工作溫度： 0°C ~ 70°C
已用 IC / 零件： TLV2545
已供物品： 板
相關(guān)產(chǎn)品： TLV2545IDGKG4-ND - IC 12BIT 200KSPS ADC S/O 8-MSOP
TLV2545IDG4-ND - IC 12BIT 200KSPS ADC S/O 8-SOIC
TLV2545CDGKG4-ND - IC 12BIT 200KSPS ADC S/O 8-MSOP
296-2985-5-ND - IC 12BIT 200KSPS ADC S/O 8-MSOP
296-2984-5-ND - IC 12BIT 200KSPS ADC S/O 8-SOIC
296-2203-5-ND - IC 12-BIT SERIAL A/D 8-MSOP
其它名稱： 296-20579
TLV2545EVM-ND
TLV2541, TLV2542, TLV2545
2.7-V TO 5.5-V, LOW-POWER, 12-BIT, 140/200 KSPS,
SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTOPOWER DOWN
SLAS245E MARCH 2000 REVISED APRIL 2010
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
detailed description (continued)
GND/AIN()
ADC Code
AIN
Charge
Redistribution
DAC
Control
Logic
_
+
Figure 1. Simplified SAR Circuit
serial interface
OUTPUT DATA FORMAT
MSB
LSB
D15D4
D3D0
Conversion result (OD11OD0)
Don’t care
The output data format is binary (unipolar straight binary).
binary
Zero-scale code = 000h, Vcode = GND
Full-scale code = FFFh, Vcode = VREF 1 LSB
pseudo-differential inputs
The TLV2545 operates in pseudo-differential mode. The inverted input is available on pin 5. It can have a
maximum input ripple of ±0.2 V. This is normally used for ground noise rejection.
control and timing
start of the cycle
Each cycle may be started by either CS, FS, or a combination of both. The internal state machine requires one
SCLK high-to-low transition to determine the state of these control signals so internal blocks can be powered
up in an active cycle. Special care to SPI mode is necessary. Make sure there is at least one SCLK whenever
CS (pin 1) is high to ensure proper operation.
TLV2541
D Control via CS ( FS = 1 at the falling edge of CS)—The falling edge of CS is the start of the cycle. The MSB
should be read on the first falling SCLK edge after CS is low. Output data changes on the rising edge of
SCLK. This is typically used for a microcontroller with an SPI interface, although it can also be used for a
DSP. The microcontroller SPI interface should be programmed for CPOL = 0 (serial clock referenced to
ground) and CPHA = 1 (data is valid on the falling edge of the serial clock). At least one falling edge transition
on SCLK is needed whenever CS is brought high.
D Control via FS (CS is tied/held low)—The MSB is presented after the rising edge of FS. The falling edge
of FS is the start of the cycle. The MSB should be read on the first falling edge of SCLK after FS is low. This
is the typical configuration when the ADC is the only device on the DSP serial port.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLV2545ID 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12bit SAR 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
TLV2545IDG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 200 kSPS Serial 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
TLV2545IDGK 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12bit SAR 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
TLV2545IDGKG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 200 kSPS Serial 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
TLV2545IDGKR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 200 kSPS Serial 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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