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參數(shù)資料
| 型號： | PTC-01 |
| 英文描述： | DC-DC flyback power supply, IRIS4007, 48VIN, 5VOUT, 5A IOUT |
| 中文描述： | PTC的01程序員Melexis的PTC器件 |
| 文件頁數(shù)： | 2/9頁 |
| 文件大?。?/td> | 79K |
| 代理商： | PTC-01 |
PTC-01
Programmer for Melexis PTC Devices
PTC-01 Programmer Rev 2.0 15/Nov/2001 Page 2
Programmable Supply Voltage (DAC)
Parameter
Number of DAC channels
Min
-
Typ
2
Max
-
Units
channels
Output voltage range
0
-
20
volts
Output current range channel 1
-
30
-
mA
Output current range channel 2
-
300
-
mA
Digital Resolution of DAC
-
12
-
bits
Analog Resolution of DAC
-
4.88
-
mV/LSB
Internal 5V Reference
4.995
5.000
5.005
V
Explanation of 2 Analog Output Channels
The internal DAC provides two 12-bit analog output channels from 0V to 20V.
Both analog output channels are short circuit protected .
Both analog output channels are specifically designed to provide the level shifting of Vdd and Vout to make
possible programming of a Melexis PTC device.
It is not recommended that the analog output channels be used for any purpose other than programming
Melexis PTC devices.
Current Limits
Both channels have a fixed current limit which is not adjustable or programmable.
Channel 1 (DA1) is limited to 30mA and does not allow measurement of current.
Channel 2 (DA2) is limited to 300mA and allows measurement of current with the internal ADC.
External Power Connections
External jack for +24VDC 300mA for modular supply (supplied by Melexis as standard power supply)
External banana jacks for +24VDC and optional +5.000V precision power supply.
Internal Voltages
The PTC-01 uses a regulated (LM317) 22VDC linear voltage source for main power.
Two regulated 5VDC voltage sources are also used for analog and digital 5V.
Voltage References
The DAC-ADC calibration is generated by a 2.5V internal reference.
Calibration is done digitally, with calibration parameters stored in non-volatile RAM. Calibration is
recommended every 12 months at a the Melexis facility.
An external precision 5VDC reference can be used by enabling the external supply. If the external 5V option
is used, it will only be used during analog measurement of Vdd and Vout. The internal reference is always
used for digital functions of the programmer.
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