AMC1304L05-Q1 Datasheet, PDF (1/39 Pages) Texas Instruments – High-Precision, Reinforced Isolated Delta-Sigma Modulators with LDO

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AMC1304L05-Q1, AMC1304L25-Q1, AMC1304M05-Q1, AMC1304M25-Q1
SBAS799 – FEBRUARY 2017
AMC1304x-Q1 High-Precision,
Reinforced Isolated Delta-Sigma Modulators with LDO
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 ±100 µV (max)
– Offset Drift: 1.3 µV/°C (max)
– Gain Error: ±0.2% or ±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
• On-Chip 18-V LDO Regulator
3 Description
The AMC1304-Q1 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 input of the AMC1304-Q1 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
while supporting excellent ac and dc performance. By
using an appropriate digital filter (that is, as integrated
on the TMS320F2807x or TMS320F2837x families) to
decimate the bit stream, the device can achieve 16
bits of resolution with a dynamic range of 81 dB (13.2
ENOB) at a data rate of 78 kSPS.
On the high-side, the modulator is supplied by an
integrated low-dropout (LDO) regulator that allows an
unregulated input voltage between 4 V and 18 V
(LDOIN). The isolated digital interface operates from
a 3.3-V or 5-V power supply (DVDD).
The AMC1304-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)
AMC1304x-Q1 SOIC (16)
10.30 mm × 7.50 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
To Load
Simplified Schematic
Floating
Power Supply
HV+
4 V to 18 V
AMC1304-Q1
LDOIN
DVDD
RSHUNT
VCAP
AGND
AINN
AINP
DGND
DOUT
CLKIN
3.3 V or 5.0 V
TMS320F2837x
SD-Dx
SD-Cx
PWMx
HV-
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.