AMC1306E05_017 Datasheet, PDF (1/38 Pages) Texas Instruments – Small, High-Precision, Reinforced Isolated Delta-Sigma Modulators with High CMTI

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AMC1306E05, AMC1306E25, AMC1306M05, AMC1306M25
SBAS734A – MARCH 2017 – REVISED JULY 2017
AMC1306x Small, High-Precision,
Reinforced Isolated Delta-Sigma Modulators with High CMTI
1 Features
•1 Pin-Compatible Family Optimized for Shunt-
Resistor-Based Current Measurements:
– ±50-mV or ±250-mV Input Voltage Ranges
– Manchester Coded or Uncoded Bitstream
Options
• Excellent DC Performance:
– Offset Error: ±50 µV or ±100 µV (max)
– Offset Drift: 1 µV/°C (max)
– Gain Error: ±0.2% (max)
– Gain Drift: ±40 ppm/°C (max)
• Transient Immunity: 100 kV/µs (typ)
• System-Level Diagnostic Features
• Safety-Related Certifications:
– 7000-V_PEAK Reinforced Isolation per DIN V
VDE V 0884-11 (VDE V 0884-11): 2017-01
– 5000-V_RMS Isolation for 1 Minute per UL1577
– CAN/CSA No. 5A-Component Acceptance
Service Notice, IEC 60950-1, and IEC 60065
End Equipment Standards
• Fully Specified Over the Extended Industrial
Temperature Range: –40°C to +125°C
2 Applications
• Shunt-Resistor-Based Current Sensing and
Isolated Voltage Measurements in:
– Industrial Motor Drives
– Photovoltaic Inverters
– Uninterruptible Power Supplies
3 Description
The AMC1306 device is a precision, delta-sigma (ΔΣ)
modulator with the output separated from the input
circuitry by a capacitive double isolation barrier that is
highly resistant to magnetic interference. This barrier
is certified to provide reinforced isolation of up to
7000 V_PEAK according to the DIN V VDE V 0884-11
and UL1577 standards. Used in conjunction with
isolated power supplies, this isolated modulator
separates parts of the system that operate on
different common-mode voltage levels and protects
lower-voltage parts from damage.
The input of the AMC1306 is optimized for direct
connection to shunt resistors or other low voltage-
level signal sources. The unique low input voltage
range of the ±50-mV device allows significant
reduction of the power dissipation through the shunt
and supports excellent ac and dc performance. The
output bitstream of the AMC1306 is Manchester
coded (AMC1306Ex) or uncoded (AMC1306Mx),
depending on the derivate. By using an integrated
digital filter (such as those in the TMS320F2807x or
TMS320F2837x microcontroller families) to decimate
the bitstream, the device can achieve 16 bits of
resolution with a dynamic range of 85 dB at a data
rate of 78 kSPS.
The bitstream output of the Manchester coded
AMC1306Ex versions support single-wire data and
clock transfer without having to consider the setup
and hold time requirements of the receiving device.
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
AMC1306x
SOIC (8)
5.85 mm × 7.50 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
HV+
Floating
Power Supply
Simplified Schematic
3.3 V or 5.0 V
AVDD
AMC1306Mx
DVDD
3.0 V, 3.3 V, or 5.0 V
To Load
RSHUNT
Optional
Optional
AGND
AINN
Optional
AINP
DGND
DOUT
CLKIN
TMS320F28x7x
SD-Dx
SD-Cx
PWMx
HV-
1
Copyright © 2017, Texas Instruments Incorporated
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.