Data Sheet

ManualsBrandsUnbranded ManualsActive ComponentsLinear IC - Op-amp AMC1100DUBR Isolation amp SOP 8 (2.54 mm)

0V 250mV

2.55V

2V

1.29V

2V

5V

3.3V

GND1 GND2

VDD1 VDD2

VOUTP

VOUTN

VINP

VINN

AMC1100

www.ti.com

SBAS562 –APRIL 2012

Fully-Differential Isolation Amplifier for Energy Metering

Check for Samples: AMC1100

FEATURES

DESCRIPTION

The AMC1100 is a precision isolation amplifier with

• ±250-mV Input Voltage Range Optimized for

an output separated from the input circuitry by a

Shunt Resistors

silicon dioxide (SiO

) barrier that is highly resistant to

• Very Low Nonlinearity: 0.075% max at 5 V

magnetic interference. This barrier has been certified

• Low Offset Error: 1.5 mV max

to provide galvanic isolation of up to 4250 V

PEAK

according to UL1577 and IEC60747-5-2. Used in

• Low Noise: 3.1 mV

RMS

typ

conjunction with isolated power supplies, this device

• Low High-Side Supply Current:

prevents noise currents on a high common-mode

8 mA max at 5 V

voltage line from entering the local ground and

• Input Bandwidth: 60 kHz min

interfering with or damaging sensitive circuitry.

• Fixed Gain: 8 (0.5% Accuracy)

The AMC1100 input is optimized for direct connection

to shunt resistors or other low voltage level signal

• High Common-Mode Rejection Ratio: 108 dB

sources. The excellent performance of the device

• Low-Side Operation: 3.3 V

enables accurate current and voltage measurement

• Certified Galvanic Isolation:

in energy-metering applications. The output signal

– UL1577 and IEC60747-5-2 Approved

common-mode voltage is automatically adjusted to

either the 3-V or 5-V low-side supply.

– Isolation Voltage: 4250 V

PEAK

The AMC1100 is fully specified over the extended

– Working Voltage: 1200 V

PEAK

industrial temperature range of –40°C to +105°C and

– Transient Immunity: 2.5 kV/µs min

is available in the SMD-type, gullwing-8 package.

• Typical 10-Year Lifespan at Rated Working

Voltage (see Application Report SLLA197)

• Fully Specified Over the Extended Industrial

Temperature Range

APPLICATIONS

• Shunt Resistor Based Current Sensing in:

– Energy Meters

– Green Energy

– Power Measurement Applications

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.

2All 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.

Summary of content (22 pages)

PAGE 1
AMC1100 www.ti.com SBAS562 – APRIL 2012 Fully-Differential Isolation Amplifier for Energy Metering Check for Samples: AMC1100 FEATURES DESCRIPTION • The AMC1100 is a precision isolation amplifier with an output separated from the input circuitry by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This barrier has been certified to provide galvanic isolation of up to 4250 VPEAK, according to UL1577 and IEC60747-5-2.
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AMC1100 SBAS562 – APRIL 2012 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure.
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AMC1100 www.ti.com SBAS562 – APRIL 2012 REGULATORY INFORMATION VDE AND IEC UL Certified according to IEC 60747-5-2 Recognized under 1577 component recognition program File number: 40016131 File number: E181974 IEC 60747-5-2 INSULATION CHARACTERISTICS Over operating free-air temperature range, unless otherwise noted. PARAMETER VIORM VPR TEST CONDITIONS VALUE UNIT 1200 VPEAK Qualification test: after input/output safety test subgroup 2/3 VPR = VIORM × 1.
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AMC1100 SBAS562 – APRIL 2012 www.ti.com PACKAGE CHARACTERISTICS (1) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT L(I01) Minimum air gap (clearance) Shortest terminal-to-terminal distance through air L(I02) Minimum external tracking (creepage) Shortest terminal-to-terminal distance across package surface 7 CTI Tracking resistance (comparative tracking index) DIN IEC 60112 and VDE 0303 part 1 > 400 V Minimum internal gap (internal clearance) Distance through insulation 0.
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AMC1100 www.ti.com SBAS562 – APRIL 2012 ELECTRICAL CHARACTERISTICS (continued) All minimum and maximum specifications are at TA = –40°C to +105°C and are within the specified voltage range, unless otherwise noted. Typical values are at TA = +25°C, VDD1 = 5 V, and VDD2 = 3.3 V. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 0.5-V step, 50% to 10%, unfiltered output 1.6 3.3 µs 0.5-V step, 50% to 50%, unfiltered output 3.15 5.6 µs 0.5-V step, 50% to 90%, unfiltered output 5.26 9.
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AMC1100 SBAS562 – APRIL 2012 www.ti.com TYPICAL CHARACTERISTICS At VDD1 = VDD2 = 5 V, VINP = –250 mV to +250 mV, and VINN = 0 V, unless otherwise noted. INPUT OFFSET vs HIGH-SIDE SUPPLY VOLTAGE INPUT OFFSET vs LOW-SIDE SUPPLY VOLTAGE 2 2 1.5 1.5 1 1 Input Offset (mV) Input Offset (mV) VDD2 = 2.7 V to 3.6 V 0.5 0 −0.5 0.5 0 −0.5 −1 −1 −1.5 −1.5 −2 4.5 4.75 5 VDD1 (V) 5.25 −2 2.7 5.5 3 3.3 3.6 VDD2 (V) Figure 1. Figure 2.
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AMC1100 www.ti.com SBAS562 – APRIL 2012 TYPICAL CHARACTERISTICS (continued) At VDD1 = VDD2 = 5 V, VINP = –250 mV to +250 mV, and VINN = 0 V, unless otherwise noted. INPUT BANDWIDTH vs TEMPERATURE GAIN ERROR vs HIGH-SIDE SUPPLY VOLTAGE 120 1 0.8 0.6 0.4 100 Gain Error (%) Input Bandwidth (kHz) 110 90 80 0.2 0 −0.2 −0.4 −0.6 70 −0.8 60 −40 −25 −10 5 20 35 50 65 Temperature (°C) 80 95 −1 4.5 110 125 5.25 Figure 8.
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AMC1100 SBAS562 – APRIL 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) At VDD1 = VDD2 = 5 V, VINP = –250 mV to +250 mV, and VINN = 0 V, unless otherwise noted. OUTPUT PHASE vs INPUT FREQUENCY OUTPUT VOLTAGE vs INPUT VOLTAGE 0 5 −30 4.5 −60 VOUTP VOUTN 4 Output Voltage (V) Output Phase (°) −90 −120 −150 −180 −210 −240 3.5 3 2.5 2 1.5 −270 1 −300 0.5 −330 −360 1 10 100 Input Frequency (kHz) 0 −400 1000 −200 −100 0 100 Input Voltage (mV) 200 Figure 13. Figure 14.
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AMC1100 www.ti.com SBAS562 – APRIL 2012 TYPICAL CHARACTERISTICS (continued) At VDD1 = VDD2 = 5 V, VINP = –250 mV to +250 mV, and VINN = 0 V, unless otherwise noted. NONLINEARITY vs INPUT VOLTAGE NONLINEARITY vs TEMPERATURE 0.1 0.1 VDD2 = 3 V VDD2 = 5 V 0.06 0.06 0.04 0.04 0.02 0 −0.02 −0.04 0.02 0 −0.02 −0.04 −0.06 −0.06 −0.08 −0.08 −0.1 −250 −200 −150 −100 −50 0 50 100 Input Voltage (mV) 150 200 −0.1 −40 −25 −10 250 5 20 35 50 65 Temperature (°C) 80 95 Figure 19. Figure 20.
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AMC1100 SBAS562 – APRIL 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) At VDD1 = VDD2 = 5 V, VINP = –250 mV to +250 mV, and VINN = 0 V, unless otherwise noted. OUTPUT COMMON-MODE VOLTAGE vs LOW-SIDE SUPPLY VOLTAGE OUTPUT SIGNAL DELAY TIME vs TEMPERATURE 10 5 8 Signal Delay (µs) 7 6 5 4 3 2 1 0 −40 −25 −10 5 20 35 50 65 Temperature (°C) 80 95 VDD2 rising VDD2 falling Output Common−Mode Voltage (V) 50% to 10% 50% to 50% 50% to 90% 9 4 3 2 1 0 3.5 110 125 3.7 3.8 3.9 4 4.
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AMC1100 www.ti.com SBAS562 – APRIL 2012 THEORY OF OPERATION INTRODUCTION The differential analog input of the AMC1100 is a switched-capacitor circuit based on a second-order modulator stage that digitizes the input signal into a 1-bit output stream. The device compares the differential input signal (VIN = VINP – VINN) against the internal reference of 2.5 V using internal capacitors that are continuously charged and discharged with a typical frequency of 10 MHz.
PAGE 12
AMC1100 SBAS562 – APRIL 2012 www.ti.com APPLICATION INFORMATION CURRENT MEASUREMENT A typical operation of the AMC1100 is a current-measurement application, as shown in Figure 32. Measurement of the current through the phase of a power line is done via the shunt resistor RSHUNT (in this case, a two-terminal shunt). For better performance, the differential signal is filtered using RC filters (components R2, R3, and C2). Optionally, C3 and C4 can be used to reduce charge dumping from the inputs.
PAGE 13
AMC1100 www.ti.com SBAS562 – APRIL 2012 As shown in Figure 33, it is recommended to place the bypass and filter capacitors as close as possible to the AMC1100 to ensure best performance. Top View 12 W SMD 0603 To Shunt 12 W SMD 0603 330 pF SMD 0603 LEGEND Top layer; copper pour and traces VDD1 VDD2 VINP VOUTP 0.1 mF SMD 1206 0.1mF 0.1 mF SMD 1206 Device VINN VOUTN GND1 GND2 To Filter or ADC SMD 1206 Clearance area. Keep free of any conductive materials.
PAGE 14
AMC1100 SBAS562 – APRIL 2012 www.ti.com VOLTAGE MEASUREMENT The AMC1100 can also be used for isolated voltage measurement applications, as shown in a simplified way in Figure 34. In such applications, usually a resistor divider (R1 and R2 in Figure 34) is used to match the relatively small input voltage range of the AMC1100. R2 and the AMC1100 input resistance (RIN) also create a resistance divider that results in additional gain error.
PAGE 15
AMC1100 www.ti.com SBAS562 – APRIL 2012 ISOLATION GLOSSARY Creepage Distance: The shortest path between two conductive input-to-output leads measured along the surface of the insulation. The shortest distance path is found around the end of the package body. Clearance: The shortest distance between two conductive input-to-output leads measured through air (line of sight).
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AMC1100 SBAS562 – APRIL 2012 www.ti.com Pollution Degree: Pollution Degree 1—No pollution, or only dry, nonconductive pollution occurs. The pollution has no influence on device performance. Pollution Degree 2—Normally, only nonconductive pollution occurs. However, a temporary conductivity caused by condensation is to be expected. Pollution Degree 3—Conductive pollution, or dry nonconductive pollution that becomes conductive because of condensation, occurs. Condensation is to be expected.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 10-May-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device AMC1100DUBR Package Package Pins Type Drawing SOP DUB 8 SPQ 350 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 330.0 24.4 Pack Materials-Page 1 10.9 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 10.01 5.85 16.0 24.
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PACKAGE MATERIALS INFORMATION www.ti.com 10-May-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) AMC1100DUBR SOP DUB 8 350 358.0 335.0 35.
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