VECANA01
VECA
NA01
www.ti.com
10-Channel, 12-Bit
DATA ACQUISITION SYSTEM
FEATURES
q
10 FULLY DIFFERENTIAL INPUTS
q
5 SIMULTANEOUS SAMPLED CHANNELS
PLUS 2 SYNCHRONIZED SAMPLING
CHANNELS
q
3 SYNCHRONIZED 12-BIT ADCs
q
12.8
µ
s THROUGHPUT RATE
q
DIGITALLY SELECTABLE INPUT RANGES
q
±
5V POWER SUPPLIES
q
SERIAL DIGITAL INPUT/OUTPUTS
q
7 SIGN AND 3 DIGITALLY
PROGRAMMABLE WINDOW COMPARATOR
IUP/N
2
A1P/N
2
A2P/N
2
IVP/N
2
B1P/N
2
B2P/N
MUX
2
2
IWP/N
2
AN1P/N
AN2P/N
AN3P/N
2
2
MUX
3
Input Select
Gain Select
ADIN
SH
3
PGA
3
ADC
3
12-Bit
ADOUT3
SH
2
PGA
2
ADC
2
12-Bit
ADOUT2
MUX
1
SH
1
PGA
1
ADC
1
12-Bit
ADOUT1
2
APPLICATIONS
q
AC MOTOR SPEED CONTROLS
q
THREE PHASE POWER CONTROL
q
UNINTERRUPTABLE POWER SUPPLIES
q
VIBRATION ANALYSIS
DESCRIPTION
The VECANA01 consists of three 12-bit analog-to-
digital converters preceded by five simultaneously
operating sample-hold amplifiers, and multiplexers
for 10 differential inputs. The ADCs have simulta-
neous serial outputs for high speed data transfer and
data processing.
The VECANA01 also offers a programmable gain am-
plifier with programmable gains of 1.0V/V, 1.25V/V,
2.5V/V, and 5.0V/V. Channel selection and gain selec-
tion are selectable through the serial input control word.
The high through put rate is maintained by simulta-
neously clocking in the 13-bit input control word for the
next conversion while the present conversions are
clocked out.
The part also contains an 8-bit digital-to-analog con-
verter whose digital input is supplied as part of the
input control word.
2.5V
Ref
Control
Logic
Input Setup
Register
DAC
REFOUT
DAC
8-Bit
DAOUT
ADCLK
ADCONV
ADBUSY
7
7
COMP
3
ILIM
DAIN
Copyright © 2000, Texas Instruments Incorporated
SBAS155
Printed in U.S.A. October, 2000
BURR-BROWN [ BURR-BROWN CORPORATION ]
