參數(shù)資料
型號(hào)： TSA1204IF
廠商： 意法半導(dǎo)體
英文描述： DUAL-CHANNEL, 12-BIT, 20MSPS, 120mW A/D CONVERTER
中文描述： 雙通道，12位，20MSPS，120mW的A / D轉(zhuǎn)換器
文件頁(yè)數(shù)： 1/20頁(yè)
文件大?。?/td> 495K
代理商： TSA1204IF
1/20
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0.5Msps to 20Msps sampling frequency
Adaptive power consumption: 120mW @
20Msps, 95mW@10Msps
Single supply voltage: 2.5V
Independent supply for CMOS output stage
with 2.5V/3.3V capability
ENOB=11.2 @ Nyquist
SFDR= -81.5 dBc @ Nyquist
1GHz analog bandwidth Track-and-Hold
Common clocking between channels
Dual simultaneous Sample and Hold inputs
Multiplexed outputs
Built-in reference voltage with external bias
capability.
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DESCRIPTION
The TSA1204 is a new generation of high speed,
dual-channel Analog to Digital converter pro-
cessed in a mainstream 0.25μm CMOS technolo-
gy yielding high performances and very low power
consumption.
The TSA1204 is specifically designed for applica-
tions requiring very low noise floor, high SFDR
and good isolation between channels. It is based
on a pipeline structure and digital error correction
to provide excellent static linearity and over 11.2
effective bits at Fs=20Msps, and Fin=10MHz.
For each channel, a voltage reference is integrat-
ed to simplify the design and minimize external
components. It is nevertheless possible to use the
circuit with external references.
Each ADC outputs are multiplexed in a common
bus with small number of pins. A tri-state capabili-
ty is available for the outputs, allowing chip selec-
tion. The inputs of the ADC must be differentially
driven.
The TSA1204 is available in extended (-40 to
+85°C) temperature range, in a small 48 pins
TQFP package.
APPLICATIONS
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Medical imaging and ultrasound
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3G base station
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I/Q signal processing applications
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High speed data acquisition system
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Portable instrumentation
ORDER CODE
PIN CONNECTIONS
(top view)
BLOCK DIAGRAM
PACKAGE
Part Number
Temperature
Range
Package
Conditioning
Marking
TSA1204IF
TSA1204IFT
EVAL1204/BA
February 2003
-40°C to +85°C
-40°C to +85°C
TQFP48
TQFP48
Evaluation board
Tray
SA1204I
SA1204I
Tape & Reel
S
C
D
R
A
A
D
D
D
I
R
G
D5
D6
D7
D8
D9
D10
D11(MSB)
AVCCB
index
corner
1
2
3
4
5
6
7
8
9
10
11
32
31
30
29
28
27
26
13
14 15
16
17
18 19
20
21
22
47
25
33
12
23
24
35
34
36
48
44 43
42
41
40
39
38 37
46
45
TSA1204
VCCBE
GNDBE
AGND
INI
AGND
AGND
IPOL
AGND
AGND
INBQ
INIB
AGND
INQ
D2
D3
R
D
O
A
R
I
A
V
G
V
D
V
D4
Timing
Buffers
IPOL
CLK
+2.5V/3.3V
VINI
VINBI
OEB
VINCMI
GND
VINQ
VINBQ
VINCMQ
AD 12
I channel
AD 12
Q channel
12
12
12
12
M
U
X
REF I
REF Q
SELECT
VREFPI
VREFMI
VREFPQ
VREFMQ
Polar.
common mode
common mode
D0
TO
D11
VCCBE
GNDBE
7
×
7 mm TQFP48
TSA1204
DUAL-CHANNEL, 12-BIT, 20MSPS, 120mW A/D CONVERTER
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TSA1204IFT 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Dual Channel 12-Bit 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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