Difference between revisions of "SU710"
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= Measurement = | = Measurement = | ||
| + | Voltage output with 1M Ohm input impedance | ||
| + | [[File:SU710_mess_1.png|400px]] | ||
| − | + | Voltage output with 1M Ohm input impedance (Zoom) | |
| − | |||
[[File:SU710_mess_2.png|400px]] | [[File:SU710_mess_2.png|400px]] | ||
| + | Voltage output with 50 Ohm input impedance | ||
[[File:SU710_mess_3.png|400px]] | [[File:SU710_mess_3.png|400px]] | ||
| + | Voltage output with 50 Ohm input impedance (Zoom) | ||
[[File:SU710_mess_4.png|400px]] | [[File:SU710_mess_4.png|400px]] | ||
Revision as of 13:12, 13 May 2014
Contents
Description
Dual channel 10/12/14-Bit Digital to analog converter. As DAC was used the DAC2904 from Texas Instruments. It can operate with high update rates of up to 125MSPS. Each DAC has a high-impedance differential-current output suitable for single-ended or differential analog-output configurations.
The SU710 can be used as voltage or current driver. As current driver the DAC2904 can drive 50 Ohm loads with up to 20 mA. To convert the current output to voltage an LMH6702 was used for each channel. This buffer convert the 0-20mA current to a differential output voltage, maximal +/-2V.
Block Diagram
Version 3
Front panel
Version 3
| Pos (top view) | Name | Type | Qty. | Dir. | Function |
|---|---|---|---|---|---|
| 1 LEFT | Analog output | LEMO connector | 1x | output | DAC current output negative Iout- channel 1 |
| 2 LEFT | Analog output | LEMO connector | 1x | output | DAC current output positive Iout+ or DAC output in voltage mode channel 1 |
| 1 RIGHT | Analog output | LEMO connector | 1x | output | DAC current output negative Iout- channel 2 |
| 2 RIGHT | Analog output | LEMO connector | 1x | output | DAC current output positive Iout+ or DAC output in voltage mode channel 2 |
Back Connector
Version 2
SU710 pin table (direction shown for the SU board!)
power in +5V 2 1 +5V in power
LVTTL in DATA1<0> 4 3 DATA1<1> in LVTTL
LVTTL in DATA1<2> 6 5 DATA1<3> in LVTTL
LVTTL in DATA1<4> 8 7 DATA1<5> in LVTTL
LVTTL in DATA1<6> 10 9 DATA1<7> in LVTTL
LVTTL in DATA1<8> 12 11 DATA1<9> in LVTTL
LVTTL in DATA1<10> 14 13 DATA1<11> in LVTTL
LVTTL in DATA1<12> 16 15 DATA1<13> in LVTTL
LVTTL in LOAD2 18 17 LOAD1 in LVTTL
LVTTL in DATA2<0> 20 19 DATA2<1> in LVTTL
LVTTL in DATA2<2> 22 21 DATA2<3> in LVTTL
LVTTL in DATA2<4> 24 23 DATA2<5> in LVTTL
LVTTL in DATA2<6> 26 25 DATA2<7> in LVTTL
LVTTL in DATA2<8> 28 27 DATA2<9> in LVTTL
LVTTL in DATA2<10> 30 29 DATA2<11> in LVTTL
LVTTL in DATA2<12> 32 31 DATA2<13> in LVTTL
NC - - 34 33 - - NC
power in GND 36 35 GND in power
Power consumption
Version 2
+5V -> XX mA -5V -> XX mA
Measurement
Voltage output with 1M Ohm input impedance
Voltage output with 1M Ohm input impedance (Zoom)
Voltage output with 50 Ohm input impedance
Voltage output with 50 Ohm input impedance (Zoom)
