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interfaces:tm7705 [2017/01/16 23:02]
darron 		interfaces:tm7705 [2017/01/26 03:42]
darron [Resources]
Line 5: Line 5:
  
 This TM7705 A/D module is manufactured in China and sold as an AD7705 This TM7705 A/D module is manufactured in China and sold as an AD7705
-acquisition board with two 16-bit input channels. +acquisition board with two 16-bit input channels. A 2.5V voltage reference 
-A 2.5V voltage reference is also on the board.+is also on the board.
  
-The TM7705 mimics the operation of the AD7705 and the TM7705 +The TM7705 mimics the operation of the AD7705 and the TM7705 data-sheet, 
-data-sheet is mostly a copy and paste translation of the AD7705 original.+which is only available in Chinese, is similar to the AD7705 original.
  
 == Pinout == == Pinout ==
  
 __Module__ __Module__
- 
 <code> <code>
-A1+ o                 VCC         o o  GND +A1+ o                 VCC   o o  GND 
-A1- o                 CHIP SEL    o o  RESET +A1- o                 CS    o o  RST 
-A2+ o                 DATA IN     o o  CLOCK +A2+ o                 DIN   o o  SCK 
-A2- o                 DATA READY  o o  DATA OUT+A2- o                 DRDY  o o  DOUT
           TM7705 I.C.           TM7705 I.C.
 +          
 +RST     HAS  10K PULL UP
 +A1-/A2- HAVE 0R  PULL DOWN
 +
 +DIN  = MOSI
 +DOUT = MISO
 </code> </code>
  
-__TM7705__+__Raspberry Pi__
  
 +The module can easily be connected to the RPi using the following pins.
 <code> <code>
-       CLOCK     o    o GND +         +---P1---+ 
-       MCLK IN   o    o VDD +         //      // 
-       MCLK OUT  o    o DATA IN  / MOSI +3V3      17      18  
-       CHIP SEL  o    o DATA OUT / MISO +MOSI     19      20 GND 
-       RESET     o    o DATA READY +MISO     21      22  
-       A2+       o    o A2- +SCLK     23      24 CE0 
-       A1+       o    o REF- +GND      25      26 CE1 
-       A1-       o    o REF++         +--------+ 
 +          
 +SCLK = SERIAL CLOCK 
 +CE   = CHIP ENABLE / SELECT
 </code> </code>
  
 +__TM7705__
 +
 +As expected the pinout is the same as the AD7705.
 +<code>
 +       SCLK     o    o GND
 +       MCLK IN  o    o VDD
 +       MCLK OUT o    o DIN
 +       !CS      o    o DOUT
 +       !RESET   o    o !DRDY
 +       AIN2+    o    o AIN2-
 +       AIN1+    o    o REF IN-
 +       AIN1-    o    o REF IN+
 +</code>
 === Resources === === Resources ===
 +
 [[http://www.analog.com/media/en/technical-documentation/data-sheets/AD7705_7706.pdf|AD7705 data-sheet]] \\ [[http://www.analog.com/media/en/technical-documentation/data-sheets/AD7705_7706.pdf|AD7705 data-sheet]] \\
-[[http://wiki.kewl.org/downloads/tm7705.pdf|TM7705 data-sheet (chinese)]] \\+[[http://www.titanmec.com/index.php/product/view/id/261.html|Titanmec TM7705]] \\ 
 +[[http://wiki.kewl.org/downloads/tm7705.pdf|TM7705 data-sheet]] \\