ADS131E04
ADS131E06
ADS131E08
www.ti.com
SBAS561A –JUNE 2012–REVISED APRIL 2013
Analog Front-End for Power Monitoring, Control, and Protection
Check for Samples: ADS131E04, ADS131E06 , ADS131E08
The ADS131E0x incorporate features commonly
1
FEATURES
required in industrial power monitoring, control, and
protection applications. The ADS131E0x inputs can
be independently and directly interfaced with a
resistor-divider network or a transformer to measure
voltage. The inputs can also be interfaced to a
current transformer or Rogowski coil to measure
current. With high integration levels and exceptional
performance, the ADS131E0x family enables the
creation of scalable industrial power systems at
significantly reduced size, power, and low overall
cost.
23
•
Eight Differential Current and Voltage Inputs
Outstanding Performance:
•
–
–
–
–
Exceeds Class 0.1 Performance
Dynamic Range at 1 kSPS: 118 dB
Crosstalk: –110 dB
THD: –90 dB at 50 Hz and 60 Hz
•
Supply Range:
–
Analog:
–
–
+3 V to +5 V (Unipolar)
±2.5 V (Bipolar, allows dc coupling)
The ADS131E0x have a flexible input multiplexer per
channel that can be independently connected to the
internally-generated signals for test, temperature, and
fault detection. Fault detection can be implemented
internal to the device, using the integrated
comparators with digital-to-analog converter (DAC)-
controlled trigger levels. The ADS131E0x can operate
at data rates as high as 64 kSPS.
–
Digital: +1.8 V to +3.6 V
•
•
•
•
•
•
•
Low Power: 2 mW per Channel
Data Rates: 1, 2, 4, 8, 16, 32, and 64 kSPS
Programmable Gains (1, 2, 4, 8, and 12)
Fault Detection and Device Testing Capability
SPI™ Data Interface and Four GPIOs
Package: TQFP-64 (PAG)
These complete analog front-end (AFE) solutions are
packaged in a TQFP-64 package and are specified
over the industrial temperature range of –40°C to
+105°C.
Operating Temperature Range:
–40°C to +105°C
Current
ûꢀ
ADC
Sensing
Device
Channel 1
Channel 2
PGA
PGA
Line A
APPLICATIONS
Voltage
Sensing
•
Industrial Power Applications:
ûꢀ
ADC
Voltage
Reference
–
–
Energy Metering
Current
Sensing
ûꢀ
ADC
Oscillator
Monitoring, Control, and Protection
Channel 3
Channel 4
PGA
PGA
Line B
Line C
Line N
Voltage
Sensing
ûꢀ
ADC
EMI
Filters
and
Input
MUX
DESCRIPTION
The ADS131E0x are
simultaneous sampling, 24- and 16-bit, delta-sigma
(ΔΣ), analog-to-digital converters (ADCs) with a built-
in programmable gain amplifier (PGA), internal
reference, and an onboard oscillator.
Control
and
SPI Interface
a family of multichannel,
ûꢀ
ADC
Current
Sensing
Channel 5
Channel 6
PGA
PGA
PGA
PGA
ûꢀ
ADC
Fault
Detection
Voltage
Sensing
Test
ûꢀ
ADC
Channel 7
Channel 8
Current
Sensing
Op
Amp
ûꢀ
ADC
Voltage
Sensing
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
3
SPI is a trademark of Motorola.
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012–2013, Texas Instruments Incorporated
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