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PDF CDB5466U Data sheet ( Hoja de datos )
| Número de pieza | CDB5466U | |
| Descripción | Evaluation Board | |
| Fabricantes | Cirrus Logic | |
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CDB5466U
CDB5466U Evaluation Board
Features
Active Energy-to-Pulse Conversions
Simple Configuration Jumpers
– Current Channel Gain
– High-pass Filter
– Energy-to-pulse Output Frequency
Energy Pulses
– Collected by On-board Microcontroller
– Available on External Header
– Viewable via LEDs
Multiple Supply Voltage Selections
USB Communication with PC
On-board Voltage Reference
General Description
The CS5466 is a low cost power/energy IC with pulse
output for power measurement solutions. The
CDB5466U Evaluation Board is an inexpensive tool
designed to evaluate the functionality and perfor-
mance of the CS5466.
The evaluation board is designed to output energy-to-
pulse conversions upon power-up. The CS5466 data
sheet should be read and consulted when using the
CDB5466U evaluation board.
The evaluation board includes a microcontroller with a
USB interface. The microcontroller and GUI (Graphi-
cal User Interface) provide a means to quickly register
and evaluate the CS5466’s energy-to-pulse outputs.
ORDERING INFORMATION
CDB5466U
Evaluation Board
+5V
GND
4.096MHz
VD+ EXT
Vu+ EXT
VIN+
VIN-
XIN XOUT
VIN+
VIN-
CS5466
E1
E2
FOUT
NEG
E1 E2 FOUT NEG
C8051F320
Microcontroller
IIN+ IIN+
IIN- IIN-
REF+
VREF SOURCE
+2.5 V
Reference
HPF
IGAIN0
IGAIN1
FREQ0
FREQ1
FREQ2
CONFIGURATION JUMPERS
USB
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2005
(All Rights Reserved)
MAY ‘05
DS676DB1
1
1 page  
CDB5466U
to position VIN+, J22 to position VN-, J24 to position IIN+ and J26 to position IIN-, the input voltage signal is supplied
from the screw terminals J23 and J27. With a jumper on J17, J22, J24 and J26 in the GND position, the inputs are
connected to analog ground (AGND). With a jumper on J17, J22, J24 and J26 in position VREF, the inputs are con-
nected to the reference voltage selected on J12.
INPUT
Description
VIN± or IIN±
Selects External
Signal
VIN± or IIN±
Selects External
Signal
J17
GND
VREF O
VIN+ O
O VIN+
O VIN+
O VIN+
(Default)
GND
VREF O
VIN+ O
O VIN+
O VIN+
O VIN+
J22
VIN-
VREF O
GND O
O VIN-
O VIN-
O VIN-
(Default)
VIN-
VREF O
GND O
O VIN-
O VIN-
O VIN-
J24
GND
VREF O
IIN+ O
O IIN+
O IIN+
O IIN+
(Default)
GND
VREF O
IIN+ O
O IIN+
O IIN+
O IIN+
GND
Selects Grounding
the Input
GND
VREF O
VIN+ O
O VIN+
O VIN+
O VIN+
VIN-
VREF O
GND O
O VIN-
O VIN-
O VIN-
GND
VREF O
IIN+ O
O IIN+
O IIN+
O IIN+
VREFIN
Selects Reference
Source
GND
VREF O
VIN+ O
O VIN+
O VIN+
O VIN+
VIN-
VREF O
GND O
O VIN-
O VIN-
O VIN-
GND
VREF O
IIN+ O
O IIN+
O IIN+
O IIN+
Table 3. Voltage and Current Channel Input Signal Selection
J26
IIN-
VREF O
GND O
O IIN-
O IIN-
O IIN-
(Default)
IIN-
VREF O
GND O
O IIN-
O IIN-
O IIN-
IIN-
VREF O
GND O
O IIN-
O IIN-
O IIN-
IIN-
VREF O
GND O
O IIN-
O IIN-
O IIN-
1.2.2 Digital Section
The digital section contains the microcontroller, USB interface, JTAG header, reset circuitry, and an external inter-
face header (J11). The microcontroller interfaces the energy pulses, E1, E2, and FOUT output by the CS5466 with
the USB connection to the PC. The microcontroller also provides a hardware reset to the CS5466, which is level
shifted to support both +3.3 V and +5 V digital operation. Interface header, J11, is provided to allow the CDB5466U
to be connected to an external energy registration device. The energy output pins E1, E2, FOUT and NEG are routed
to LEDs which provide a simple visual check of the energy output pulses. Jumpers J10, J13, J15 and J16 are
equipped at the factory with jumpers to enable the LEDs.
1.2.2.1 Current Channel Gain
To accommodate different current-sensing elements the current channel incorporates a programmable gain that can
be set to one of four input ranges. Input pins IGAIN1 and IGAIN0 define the four gain selections and corresponding
maximum input signal level. Jumpers J31 and J32 define the state of IGAIN1 and IGAIN0, respectively. Table 4 il-
lustrates the options available. With jumpers J31 = J32 = GND the gain is set to 10x. With jumpers J31 = GND and
J32 = VD+ the gain is set to 50x. With jumpers J31 = VD+ and J32 = GND the gain is set to 100x. With jumpers
J31 = VD+ and J32 = VD+ the gain is set to 150x.
DS676DB1
5
5 Page 
CDB5466U
2.2.1.3 Menu
Menu allows one selection option, Pulse Rate Window. The Pulse Rate Window provides a means to register the
energy-to-pulse outputs. See Figure 5.
Figure 5. CDB5466 Evaluation Board
Upon selecting Pulse Rate Window, the CS5466 Pulse Rate Output Window will appear.
2.2.2 CS5466 Pulse Rate Output Window
The Pulse Rate Output Window provides a means to access the E1, E2 and FOUT pin of the CS5466. See Figure 6.
DS676DB1
Figure 6. CDB5466U Pulse Rate Output Window
11
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet CDB5466U.PDF ] | |
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