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參數資料
型號: TLV2548MPWREP
廠商: TEXAS INSTRUMENTS INC
元件分類: ADC
英文描述: 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封裝: GREEN, PLASTIC, TSSOP-20
文件頁數: 24/37頁
文件大小: 915K
代理商: TLV2548MPWREP
-71.4
-71.2
-71
-70.8
-70.6
-70.4
-70.2
0
S
N
R
-
S
ig
n
a
l-
to
-N
o
is
e
R
a
ti
o
-
d
B
f - Frequency - kHz
VCC = 5 V,
External Reference = 4 V,
Internal Oscillator,
Single Shot, Long Sample,
Mode 00 mP Mode
50
100
150
GND
CS
XF
TMS320 DSP
TLV2548
SDI
SDO
SCLK
INT
TXD
RXD
CLKR
BIO
10 k
vcc
AIN
VDD
FSR
FS
CLKX
FSX
SLAS668 – OCTOBER 2009
www.ti.com
TYPICAL CHARACTERISTICS (continued)
SIGNAL-TO-NOISE RATIO
vs
INPUT FREQUENCY
Figure 38.
PRINCIPLES OF OPERATION
Figure 39. Typical Interface to a TMS320 DSP
DATA CODE INFORMATION
Parts with a date code earlier than 31xxxxx have the following discrepancies:
1. Earlier devices react to FS input irrespective of the state of the CS signal.
2. The earlier silicon was designed with SDO prereleased half clock ahead. This means in the microcontroller
mode (FS=1) the SDO is changed on the rising edge of SCLK with a delay; and for DSP serial port (when FS
is active) the SDO is changed on the falling edge of SCLK with a delay. This helps the setup time for
processor input data, but may reduce the hold time for processor input data. It is recommended that a
100-pF capacitance be added to the SDO line of the ADC when interfacing with a slower processor that
30
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TLV2548-EP
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TLV2553EVM 功能描述:數據轉換 IC 開發工具 TLV2553 Eval Mod RoHS:否 制造商:Texas Instruments 產品: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
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