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參數資料
| 型號： | TSA1204IF |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | ADC |
| 英文描述： | 2-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
| 封裝： | 7 X 7 MM, PLASTIC, TQFP-48 |
| 文件頁數： | 8/21頁 |
| 文件大小： | 498K |
| 代理商： | TSA1204IF |
TSA1204
16/21
Operating conditions of the evaluation board:
Find below the connections to the board for the
power supplies and other pins:
Care should be taken for the evaluation board as
the outputs of the converter are 2.5V/3.3V
(VCCB2) tolerant whereas the 74LCX573 external
buffers are operating up to 2.5V.
Single and Differential Inputs:
The ADC board components are mounted to test
the TSA1204 with single analog input; the
ADT1-1WT transformer enables the differential
drive into the converter; in this configuration, the
resistors RSI6, RSI7, RSI8 for I channel (respec-
tively RSQ6, RSQ7, RSQ8 for Q one) are con-
nected as short circuits whereas RSI5, RSI9 (re-
spectively RSQ5, RSQ9) are open circuits.
The other way is to test it via JI1 and JI1B
differential inputs. So, the resistances RSI5, RSI9
for I channel (respectively RSQ5, RSQ9 for Q one)
are connected as short circuits whereas RSI6,
RSI7, RSI8 (respectively RSQ6, RSQ7, RSQ8 for
Q one) are open circuits.
Grounding consideration
So as to better reject noise on the board, connect
on the bottom overlay AG (AGND), DG(DGND),
GB1(GNDBI) together from one part, and
GB2(GNDBE) with GB3(GNDB3) from the other
part.
Mode select
So as to evaluate a single channel or the dual
ones, you have to connect on the board the
relevant position for the SELECT pin.
With the strap connected
- to the upper connectors, the I channel at the out-
put is selected.
- horizontally, the Q channel at the output is se-
lected
- to the lower connectors, both channels are se-
lected, relative to the clock edge.
Figure 9 : mode select
Consumption adjustment
Before any characterization, care should be taken
to adjust the Rpol (Raj1) and therefore Ipol value
in function of your sampling frequency.
board
notation
connection
internal
voltage (V)
external
voltage (V)
AV
AVCC
2.5
AG
AGND
0
RPI
REFPI
0.89
<1.4
RMI
REFMI
<0.4
CMI
INCMI
0.46
<1
RPQ
REFPQ
0.89
<1.4
RMQ
REFMQ
<0.4
CMQ
INCMQ
0.46
<1
DV
DVCC
2.5
DG
DGND
0
GB1
GNDBI
0
VB1
VCCBI
2.5
GB2
GNDBE
0
VB2
VCCBE
1.8/2.5/3.3
GB3
GNDB3
0
VB3
VCCB3
2.5
SELECT
DVCC
DGND
CLK
I channel
Q channel
I/Q channels
SELECT
schematic
board
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TSA1204IFT | 功能描述:模數轉換器 - ADC Dual Channel 12-Bit RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| TSA1204IFT-E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Dual channel 12-bit 20Msps 120mW A/D converter |
| TSA13 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EURO TERMINAL BLOCKS |
| TSA14 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EURO TERMINAL BLOCKS |
| TSA1401 | 制造商:STMicroelectronics 功能描述:OBS COMM TO USE AS PROTO'S FOR SPACE APPLICATIONS - Bulk |
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