CDB5451A Cirrus Logic Inc, CDB5451A Datasheet

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CDB5451A

Manufacturer Part Number
CDB5451A
Description
EVAL BOARD CS5451A 6CH ADC
Manufacturer
Cirrus Logic Inc
Datasheets

Specifications of CDB5451A

Number Of Adc's
6
Number Of Bits
6
Data Interface
Serial
Inputs Per Adc
2 Differential
Input Range
1.6 Vpp
Power (typ) @ Conditions
27mW @ 3 V
Voltage Supply Source
Analog and Digital, Dual ±
Operating Temperature
-40°C ~ 85°C
Utilized Ic / Part
CS5451A
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
598-1009
Features
• Synchronous Sampling
• On-chip 1.2 V Reference (25 ppm/°C typ.)
• Power Supply Configurations:
• Power Consumption
• Simple Four-wire Serial Interface
• Charge pump driver output generates
• Ground-referenced Bipolar Inputs
http://www.cirrus.com
negative power supply.
VREFOUT
Six-channel, Delta-sigma Analog-to-digital Converter
- VA+ = +3 V; VA- = -2 V; VD+ = +3 V
- Supply Tolerances: ±10%
- 23 mW Typical at VD+ = +3 V
VREFIN
VIN1+
VIN2+
VIN2-
VIN1-
VIN3+
VIN3-
IIN2+
IIN2-
IIN3+
IIN1+
IIN3-
IIN1-
GAIN
Reference
Voltage
x1, 20
x1
x1, 20
x1
x1, 20
x1
x1
AGND
VA+
4th Order ΔΣ Modulator
4th Order ΔΣ Modulator
4th Order ΔΣ Modulator
4th Order ΔΣ Modulator
4th Order ΔΣ Modulator
4th Order ΔΣ Modulator
Copyright  Cirrus Logic, Inc. 2010
(All Rights Reserved)
VA-
Description
The CS5451A is a highly integrated delta-sigma (ΔΣ) an-
alog-to-digital converter (ADC) developed for the power
measurement industry. The CS5451A combines six ΔΣ
ADCs, decimation filters, and a serial interface on a sin-
gle chip. The CS5451A interfaces directly to a current
transformer or shunt to measure current, and to a resis-
tive divider or transformer to measure voltage. The
product features a serial interface for communication
with a microcontroller or DSP. The product is initialized
and fully functional upon reset, and includes a voltage
reference.
ORDERING INFORMATION:
RESET
See page 13.
Decimation Filter
Decimation Filter
Decimation Filter
Decimation Filter
Decimation Filter
Decimation Filter
Clock
XIN
Pulse Output
Regulator
Interface
CS5451A
Serial
DGND
VD+
DS635F3
OWRS
SE
CPD
SDO
FSO
SCLK
FEB ‘10

Related parts for CDB5451A

CDB5451A Summary of contents

Page 1

Six-channel, Delta-sigma Analog-to-digital Converter Features • Synchronous Sampling • On-chip 1.2 V Reference (25 ppm/°C typ.) • Power Supply Configurations Supply Tolerances: ±10% • Power Consumption ...

Page 2

TABLE OF CONTENTS 1. PIN DESCRIPTION ...

Page 3

PIN DESCRIPTION Serial Clock Output Serial Data Output Frame Sync Serial Port Enable Current Input Gain Analog Ground Reference Input Reference Output Positive Analog Supply Negative Analog Supply Differential Voltage Input 3 Differential Voltage Input 3 Differential Current Input ...

Page 4

CHARACTERISTICS AND SPECIFICATIONS RECOMMENDED OPERATING CONDITIONS Parameter DC Power Supplies Voltage Reference Input ANALOG CHARACTERISTICS • Min/Max characteristics and specifications are guaranteed over all Operating Conditions. • Typical characteristics and specifications are measured at nominal supply voltages and TA ...

Page 5

ANALOG CHARACTERISTICS Parameter Power Supplies Power Supply Currents Typical VA Power Consumption (Note 2) Power Supply Rejection 50 (Note 3) 50 (Note 3) Notes: 1. Specifications for ...

Page 6

SWITCHING CHARACTERISTICS • Min/Max characteristics and specifications are guaranteed over all Operating Conditions. • Typical characteristics and specifications are measured at nominal supply voltages and °C. • VA ±10%; VA ...

Page 7

ABSOLUTE MAXIMUM RATINGS WARNING: Operation at or beyond these limits may result in permanent damage to the device. Normal operation is not guaranteed at these extremes. Parameter DC Power Supplies Input Current, Any Pin Except Supplies Output Current Power Dissipation ...

Page 8

THEORY OF OPERATION The CS5451A is a six-channel analog-to-digital convert- er (ADC) followed by a serial interface that allows com- munication with a target device. The analog inputs are structured for 3-phase power meter applications, with three dedicated voltage ...

Page 9

FUNCTIONAL DESCRIPTION 4.1 Analog Inputs The CS5451A is equipped with six fully differential input channels. The inputs VIN(1-3)± and IIN(1-3)± are des- ignated as the voltage and current channel inputs, re- spectively. The full-scale differential input voltage for the ...

Page 10

SCLK FSO SDO [ Low ] Channel When data is not being transferred SCLK is held low. (see Figure 3.) The framing signal (FSO) output is normally low. FSO ...

Page 11

The CPD pin and capacitor C1 provide the necessary analog supply current as shown in Figure 5. The Schottky diodes D1 and D2 are chosen for their low forward voltages and high-speed capabilities. The capacitor ...

Page 12

PACKAGE DIMENSIONS 28L SSOP PACKAGE DRAWING TOP VIEW INCHES DIM MIN 0.002 A2 0.064 b 0.009 D 0.390 E 0.291 E1 0.197 e 0.022 L 0.025 ∝ 0° Notes: 1. “D” ...

Page 13

ORDERING INFORMATION Model CS5451A-IS CS5451A-ISZ (lead free) 7. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION Model Number CS5451A-IS CS5451A-ISZ (lead free) * MSL (Moisture Sensitivity Level) as specified by IPC/JEDEC J-STD-020. DS635F3 Temperature -40 to +85 °C Peak Reflow Temp MSL ...

Page 14

REVISION HISTORY Revision Date A1 JUL 2003 Initial Release PP1 OCT 2003 Initial release for Preliminary Product Information F1 FEB 2005 Update electrical specifications w/ most-current characterization data. F2 AUG 2005 Update electrical specifications w/ most-current characterization data. Added ...

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