CS5466 Ver la hoja de datos (PDF) - Cirrus Logic
Número de pieza
componentes Descripción
Fabricante
CS5466 Datasheet PDF : 16 Pages
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CS5466
2. PIN DESCRIPTION
Crystal Out
XOUT 1
CPU Clock Output CPUCLK 2
Positive Power Supply
VD+ 3
Digital Ground
DGND 4
Gain Select 0
IGAIN0 5
Negative Energy Indicator
NEG 6
Gain Select 1
IGAIN1 7
High-pass Filter Enable
HPF 8
Differential Voltage Input
VIN+ 9
Differential Voltage Input
VIN- 10
Voltage Reference Output VREFOUT 11
Voltage Reference Input VREFIN 12
24 XIN
23 FREQ0
22 E1
21 E2
20 FREQ1
19 RESET
18 FOUT
17 FREQ2
16 IIN+
15 IIN-
14 VA+
13 AGND
Crystal In
Frequency Select 0
Energy Output 1
Energy Output 2
Frequency Select 1
Reset
High-frequency Output
Frequency Select 2
Differential Current Input
Differential Current Input
Positive Analog Supply
Analog Ground
Clock Generator
Crystal Out
Crystal In
1, 24
XOUT, XIN - A single stage amplifier inside the chip is connected to these pins and can be used
with a crystal to provide the system clock for the device. Alternatively, an external clock can be
supplied to the XIN pin to provide the system clock for the device.
CPU Clock Output
Control Pins
2
CPUCLK - Output of on-chip oscillator which can drive one standard CMOS load.
Gain Select
5, 7 IGAIN1, IGAIN0 - Used to select the current channel input gain range.
Frequency Select
17, 20, 23 FREQ2,FREQ1,FREQ0 - Used to select max pulse output frequency for E1, E2, and FOUT.
High Pass Filter Enable
8
HPF - High disables the HPF. Low activates HPF on Voltage channel. Connecting HPF pin to
FOUT pin activates HPF on Current channel.
Reset
Energy Pulse Outputs
19
RESET - Low activates Reset.
Energy Output
22, 21 E1, E2 - Active low alternating pulses with an output frequency that is proportional to the active
(real) power.
High Freq Output
18
FOUT - Outputs energy pulses at a frequency higher than E1 and E2 outputs. Used for calibra-
tion purposes.
Neg Energy Indicator
Analog Inputs/Outputs
6
NEG - High indicates negative energy.
Differential Voltage Inputs
9, 10 VIN+, VIN- - Differential analog input pins for voltage channel.
Voltage Reference
Output
11
VREFOUT - The on-chip voltage reference output pin. The voltage reference has a nominal
magnitude of 2.5 V and is referenced to the AGND pin on the converter.
Voltage Reference Input
12
VREFIN - Voltage input to this pin establishes the voltage reference for the on-chip modulators.
Differential Current Inputs
Power Supply Connections
16, 15 IIN+, IIN- - Differential analog input pins for current channel.
Positive Digital Supply
3
VD+ - The positive digital supply.
Digital Ground
4
DGND - Digital Ground.
Analog Ground
13
AGND - Analog Ground.
Positive Analog Supply
14
VA+ - The positive analog supply.
4
DS659F1
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