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參數資料
| 型號： | TSA1204IFT-E |
| 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： | 15/31頁 |
| 文件大小： | 435K |
| 代理商： | TSA1204IFT-E |
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Application information
TSA1204
22/31
8.7.1
Evaluation board operating conditions
Table 14 below shows the connections to the board for the power supplies and other pins.
Caution:
Do not use the VB3 power supply (5 V) dedicated to the 74LCX573 external buffers to
supply the VB2 of the TSA1203 which cannot exceed 3.3 V.
8.7.2
Consumption adjustment
Before beginnning characterization tests, make sure to adjust the Rpol (Raj1), and therefore
Ipol, value according to your sampling frequency.
8.7.3
Single and differential inputs
The test board can be driven on a single analog input, or on differential inputs. With a single
analog input, you must use the ADT1-1WT transformer to generate a differential signal. In
this configuration, the resistors RSI6, RSI7, RSI8 for channel I (respectively RSQ6, RSQ7,
RSQ8 for channel Q) are connected as short-circuits whereas RSI5, RSI9 (respectively
RSQ5, RSQ9 for channel Q) are open circuits.
Alternatively, you can use the JI1 and JI1B differential inputs. In this case, the resistances
RSI5, RSI9 for channel I (respectively RSQ5, RSQ9 for channel Q) are connected as short-
circuits whereas RSI6, RSI7, RSI8 (respectively RSQ6, RSQ7, RSQ8 for channel Q) are
open circuits.
Table 14.
Board connections for power supplies and other pins
Board marking
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
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