參數(shù)資料
型號(hào)： TLV5535IPWLE
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 1-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
封裝： PLASTIC, TSSOP-28
文件頁(yè)數(shù)： 5/32頁(yè)
文件大?。?/td> 512K
代理商： TLV5535IPWLE
TLV5535
8-BIT, 35 MSPS, LOW-POWER ANALOG-TO-DIGITAL CONVERTER
SLAS221 – JUNE 1999
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
The TLV5535 implements a high-speed 35 MSPS converter in a cost-effective CMOS process. Powered from
3.3 V, the single-pipeline design architecture ensures low-power operation and 8-bit accuracy. Signal input and
clock signals are all single-ended. The digital inputs are 3.3-V TTL / CMOS compatible. Internal voltage
references are included for both bottom and top voltages. Therefore the converter forms a self-contained
solution. Alternatively, the user may apply externally generated reference voltages. In doing so, both input offset
and input range can be modified to suit the application.
A high-speed sampling-and-hold captures the analog input signal. Multiple stages generate the output code with
a pipeline delay of 4.5 CLK cycles. Correction logic combines the multistage data and aligns the 8-bit output
word. All digital logic operates at the rising edge of CLK.
analog input
A first-order approximation for the equivalent analog input circuit of the TLV5535 is shown in Figure 12. The
equivalent input capacitance CI is 4 pF typical. The input must charge/discharge this capacitance within the
sample period of one half clock cycle. When a full-scale voltage step is applied, the input source provides the
charging current through the switch resistance RSW (200 ) of S1 and quickly settles. In this case, the input
impedance is low. Alternatively, when the source voltage equals the value previously stored on CI, the hold
capacitor requires no input current and the equivalent input impedance is very high.
To maintain the frequency performance outlined in the specifications, the total source impedance should be
limited to about 80
, as follows from the equation with fCLK = 35 MHz, CI = 4 pF, RSW = 200 :
R
S t
1
÷ 2f
CLK
C
I
In(256) –R
SW
The source impedance is approximatly 450
.
相關(guān)PDF資料
PDF描述
TLV5535IPWRQ1 1-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
TLV5535IPWRG4Q1 1-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
TLV5535IPWR 1-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
TLV5535IPWRG4 1-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
TLV5535IPWG4 1-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLV5535IPWR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8 Bit 35 MSPS Single Ch. Low 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
TLV5535IPWRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8 Bit 35 MSPS Single Ch. Low 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
TLV5535IPWRG4Q1 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8 Bit 35MSPS ADC Sgl Ch Low 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
TLV5535IPWRQ1 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Auto Cat 8B 35MSPS ADC Sgl Ch. 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
TLV5535PW 制造商:TI 制造商全稱:Texas Instruments 功能描述:8-BIT, 35 MSPS, LOW-POWER ANALOG-TO-DIGITAL CONVERTER
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