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TPCE636 User Manual Issue 1.0.2
Page 77 of 104
9.1.2 Front I/O – Analog Output Level
All analog outputs of the AD5547 DAC are routed through operational amplifiers to front I/O connector.
Outputs Drive Current
±
10mA
Capacitive Load
1000pF
Table 9-2 : DAC Electrical Interface
Single-ended DAC Output
AVSS
AVCC
TPCE636
DAC_OUTx
1/2
AD5547
16 bit Data
VREF
VOFF
-
+
one of two
AD5547 Channel
Maximum Vout = ±10.0V
Figure 9-1 : DAC Output Interface
The output voltage range of each DAC channel can be set via VREF and VOFF.
See also the chapter about the configuration of the DAC output voltage in the BCC Register
Description.
9.1.3 Back I/O Interface
All 64 single-ended / 32 differential digital back I/O Pins of the TPCE636 are directly routed from the User
FPGA (Kintex-7) to the 68 pin ERNI flat cable connector. The I/O functions of these FPGA pins are directly
dependent on the configuration of the FPGA.
The Kintex-7 VCCO voltage is set to 2.5V, so only the 2.5V I/O standards LVCMOS25 and LVDS25 are
possible when using the TPCE636 back I/O interface.