參數(shù)資料
型號： TLC3544IPWRG4
廠商： Texas Instruments, Inc.
英文描述： 5-V ANALOG, 3-/5-V DIGITAL, 14-BIT, 200-KSPS, 4-/8-CHANNELS SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH 0-5 V (PSEUDODIFFERENTIAL) INPUTS
中文描述： 5 - V模擬，3-/5-V數(shù)字，14位，200 kSPS的，4-/8-CHANNELS串行模數(shù)位0-5五（擬微分）輸入變換器
文件頁數(shù)： 34/40頁
文件大?。?/td> 790K
代理商： TLC3544IPWRG4
TLC3544, TLC3548
5-V ANALOG, 3-/5-V DIGITAL, 14-BIT 200-KSPS, 4-/8-CHANNELS SERIAL
ANALOG-TO-DIGITAL CONVERTERS WITH 0-5 V (PSEUDODIFFERENTIAL) INPUTS
SLAS266C
–
OCTOBER 2000
–
REVISED MAY 2003
34
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
interface with host
Figure 34 shows examples of the interface between a single converter and a host DSP (TMS320C54x
DSP)
or microprocessor. The C54x is set as FWID = 1 (active pulse width = 1CLK), (R/X) DATDLY = 1 (1 bit data delay),
CLK(X/R)P = 0 (transmit data are clocked out at rising edge of CLK, receive data are sampled on falling edge
of CLK), and FS(X/R)P = 1 (FS is active high). If multiple converters connect to the same C54x, use CS as the
chip select.
The host microprocessor is set as the SPI master with CPOL = 0 (active high clock), and CPHA = 1 (transmit
data is clock out at rising edge of CLK, receive data are sampled at falling edge of CLK). 16 bits (or more) per
transfer is required.
VDD
FSR
FSX
DX
DR
CLKR
CLKX
IRQ
TMS320C54X
Converter
10 k
CS
FS
SDI
SDO
SCLK
INT/EOC
Ain
Single Converter Connects to DSP
Figure 34. Typical Interface to Host DSP and Microprocessor
SS
MOSI
MISO
SCK
IRQ
Host
Microprocessor
Converter
10 k
VDD
CS
FS
SDI
SDO
SCLK
INT/EOC
Ain
Converter Connects to Microprocessor
10 k
sampling time analysis
Figure 35 shows the equivalent analog input circuit of the converter. During the sampling, the input capacitor,
C
i
, has to be charged to V
C
, (V
C
= V
s
±
voltage of 1/4 LSB = V
s
±
[V
s
/65532] for 14 bit converter).
t
(s)
= R
t
×
C
i
×
In (65532) where R
t
= R
s
+r
i
, t
(s)
= Sampling time
VI = Input Voltage at AIN
VS = External Driving Source Voltage
RS = Source Resistance
ri = Equivalent Resistor of Mux., 1.5 k
CI = Input Capacitance, 30 pF Max.
VC = Capacitance Charging Voltage
ri
Data Converter
Driving Source
VI
VC
RS
VS
CI
Figure 35. Equivalent Input Circuit Including the Driving Source
TMS320C54x is a trademark of Texas Instruments.
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參數(shù)描述
TLC3545 制造商:TI 制造商全稱:Texas Instruments 功能描述:5-V. LOW POWER, 14-BIT, 200-KSPS SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTO-POWER DOWN
TLC3545EVM 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 TLC3545 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
TLC3545ID 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14-Bit 200KSPS 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
TLC3545IDG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14-Bit 200KSPS 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
TLC3545IDGK 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14-Bit 200KSPS 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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