Dac7625 Digital-To Analog Converter - Spectrum Digital TMS320LF2407 Technical Reference

Spectrum Digital, Inc
C.1 DAC7625 DIGITAL-to-ANALOG CONVERTER
The EVM320LF2407 uses a DAC7625 Digital-to-Analog Converter (DAC)
manufactured by BURR-BROWN. The following sections describe the functionality of
this device as it is used on the EVM320LF2407 For complete information regarding this
device the user is referred to the data sheet which is available from the BURR-BROWN
website at "www.burr-brown.com".
The DAC7625 is a 4 channel, 12 bit, double buffered DAC. This means that data is
written to holding registers before it is transferred to the actual converters. In this
manner all four channels can be loaded separately and then converted at the same
time. An asynchronous reset clears all registers to a zero-scale of 0x0000.
The main features of the DAC7625 are listed below:
- Low Power: 20 mW
- Unipolar or Bipolar Operation
- Settling Time: 10us to 0.012%
- 12bit linearity and monotonicity: -40 to 85 degrees Centigrade
- Data readback
- double buffered data inputs
I/O
DB0-DB11
Buffer
A0
Control
A1
Logic
R/W
CS
C-2
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
GND
Input
DAC
Register A
Register A
Input
DAC
Register B
Register B
Input DAC
Register C
Register C
Input
DAC
Register D
Register D
RESET LDAC
BLOCK DIAGRAM - DAC7625
TMS320LF2407 Evaluation Module Technical Reference
V
V
DD
REFH
DAC A
DAC B
DAC C
DAC D
V V
REFL SS
V
OUTA
V
OUTB
V
OUTC
V
OUTD