AMC1305L25-Q1 Datasheet, PDF (1/38 Pages) Texas Instruments – High-Precision, Reinforced Isolated Delta-Sigma Modulators

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AMC1305L25-Q1, AMC1305M05-Q1, AMC1305M25-Q1
SBAS797 – FEBRUARY 2017
AMC1305x-Q1
High-Precision, Reinforced Isolated Delta-Sigma Modulators
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified with the Following Results:
– Temperature Grade 1: –40°C to +125°C
– HBM ESD Classification Level 2
– CDM ESD Classification Level C6
• Pin-Compatible Family With:
– ±50-mV or ±250-mV Input Voltage Ranges
– CMOS or LVDS Digital Interface Options
• Excellent DC Performance:
– Offset Error: ±50 µV or ±150 µV (max)
– Offset Drift: 1.3 µV/°C (max)
– Gain Error: ±0.3% (max)
– Gain Drift: ±40 ppm/°C (max)
• Safety-Related Certifications:
– 7000-V_PK Reinforced Isolation per DIN V VDE
V 0884-10 (VDE V 0884-10): 2006-12
– 5000-V_RMS Isolation for 1 Minute per UL1577
– CAN/CSA No. 5A-Component Acceptance
Service Notice
• Transient Immunity: 15 kV/µs (min)
• High Electromagnetic Field Immunity
(see Application Note SLLA181A)
• External 5-MHz to 20-MHz Clock Input
3 Description
The AMC1305-Q1 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-
10, UL1577, and CSA standards. Used in conjunction
with isolated power supplies, the device prevents
noise currents on a high common-mode voltage line
from entering the local system ground and interfering
with or damaging low voltage circuitry.
The AMC1305-Q1 is optimized for direct connection
to shunt resistors or other low voltage level signal
sources and supports excellent dc and ac
performance. Shunt resistors are typically used to
sense currents in traction inverters, onboard
chargers, or other such automotive applications. By
using an appropriate digital filter (that is, as integrated
on the TMS320F2837x) to decimate the bit stream,
the device can achieve 16 bits of resolution with a
dynamic range of 85 dB (13.8 ENOB) at a data rate
of 78 kSPS.
On the high-side, the modulator is supplied with a
nominal voltage of 5 V (AVDD), whereas the isolated
digital interface operates from a 3.3-V or 5-V power
supply (DVDD).
The AMC1305-Q1 is available in a wide-body SOIC-
16 (DW) package.
2 Applications
• Shunt-Based Current Sensing or Resistor-Divider-
Based Voltage Sensing In:
– Traction Inverters
– Onboard Chargers (OBC)
– DC-DC Converters
– Battery Management Systems (BMS)
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
AMC1305x-Q1 SOIC (16)
10.30 mm × 7.50 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
Floating
Power Supply
HV+
Gate Driver
5.0 V
AMC1305-Q1
AVDD
DVDD
3.3 V, or 5.0 V
To Load
RSHUNT
Gate Driver
HV-
AGND
AINN
AINP
DGND
DOUT
CLKIN
SD-Dx
SD-Cx
PWMx
TMS320F2837x
Copyright © 2016, Texas Instruments Incorporated
1
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.