TUSB3210
8052 C
withUSBInterface
andUART
m
USBBus
FromComputer
3.3V
Regulator
Adjustable
Regulator
V
(2.7Vto5.5V)
CC
V mC
3.3V
S
V_USB
5V
8Kx8Byte
EEPROM
Buffers and
Latches
Power
Switching
V
(2.7Vto5.5V)
DUT
SwitchedPower
I C,SPI
ControlBits,and
MeasureBits
2
External
Power
(6V )
DC
Reset Button
and
Power-OnReset
USBDAQPlatform
Calibration
EEPROM
Loop-Switching
Circuit
4mAto20mA
LoopReceiver
ExternalPower
V =40V
LoopMeasurement
Circuitry= 15V
LOOP DC
±
2x16-Bit
Delta-SigmaADC
2x16-Bit
Delta-SigmaADC
2x16-Bit
Delta-SigmaADC
Reference
Circuits
4x16-Bit
StringDAC
4mAto20mA
Receiver
ToTestBoard
ToPCandPowerSupplies
PGA309EVM-USB Hardware Setup
www.ti.com
2.5 Theory of Operation for USB-DAQ-Platform
Figure 9 shows the block diagram for the USB-DAQ-Platform. This platform is a general-purpose data
acquisition system that is used on several different Texas Instruments evaluation modules. The details of
its operation are included in a separate document (available for download at www.ti.com). The block
diagram shown in Figure 9 gives a brief overview of the platform. The primary control device on the
USB-DAQ-Platform is the TUSB3210.
Figure 9. Theory of Operation For USB-DAQ-Platform
3 PGA309EVM-USB Hardware Setup
The PGA309EVM-USB Hardware setup involves connecting the two halves of the EVM together, applying
power, connecting the USB cable, and setting the jumpers. This section covers the details of this
procedure.
3.1 Electrostatic Discharge Warning
Many of the components on the PBA309EVM-USB are susceptible to damage by electrostatic discharge
(ESD). Customers are advised to observe proper ESD handling precautions when unpacking and handling
the EVM, including the use of a grounded wrist strap at an approved ESD workstation.
CAUTION
Failure to observe ESD handling procedures may result in damage to EVM
components.
16
PGA309EVM-USB SBOU084–February 2010
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