Datasheet > AMC1204_1108

AMC1204_1108

更新时间： 2024-11-04 12:20:35

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
30页	526K
描述
20MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement

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AMC1204_1108 数据手册

AMC1204

www.ti.com

SBAS512B –APRIL 2011–REVISED AUGUST 2011

20MHz, Second-Order, Isolated Delta-Sigma Modulator

for Current-Shunt Measurement

Check for Samples: AMC1204

FEATURES

DESCRIPTION

The AMC1204 is a 1-bit digital output, isolated

•

±250mV Input Voltage Range Optimized for

delta-sigma (ΔΣ) modulator that can be clocked at up

to 20MHz. The digital isolation of the modulator

output is provided by a silicon dioxide (SiO₂) barrier

that is highly resistant to magnetic interference. This

barrier has been certified to provide basic galvanic

isolation of up to 4000V_PEAKaccording to UL1577,

IEC60747-5-2, and CSA standards or specifications.

Shunt Resistors

•

Certified Digital Isolation:

–

CSA, IEC60747-5-2, and UL1577 Approved

Isolation Voltage: 4000V_PEAK

Working Voltage: 1200V_PEAK

Transient Immunity: 15kV/µs

The AMC1204 provides a single-chip solution for

measuring the small signal of a shunt resistor across

an isolated barrier. These types of resistors are

typically used to sense currents in motor control

inverters, green energy generation systems, and

other industrial applications. The AMC1204

differential inputs easily connect to the shunt resistor

or other low-level signal sources. An internal

reference eliminates the need for external

components. When used with an appropriate external

digital filter, an effective number of bits (ENOB) of 14

is achieved at a data rate of 78kSPS.

•

Long Isolation Barrier Lifetime (see

Application Report SLLA197)

High Electromagnetic Field Immunity

(see Application Note SLLA181A)

Outstanding AC Performance:

–

SNR: 84dB (min)

THD: –80dB (max)

•

Excellent DC Precision:

–

INL: ±8LSB (max)

Gain Error: ±2% (max)

A 5V analog supply (AVDD) is used by the modulator

while the isolated digital interface operates from a 3V,

3.3V, or 5V supply (DVDD). The AMC1204 is

available in an SO-16 (DW) package and is specified

from –40°C to +105°C.

•

External Clock Input for Easier

Synchronization

Fully Specified Over the Extended Industrial

Temperature Range

APPLICATIONS

•

Shunt Resistor Based Current Sensing in:

–

Motor Control

Green Energy

Inverter Applications

Uninterruptible Power Supplies

AVDD

DVDD

VINP

VINN

DATA

Modulator

2.5V

Ref

CLKIN

AGND

DGND

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.

All 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.

12 3 4 5 6 7...30

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与AMC1204_1108相关器件

型号	品牌	获取价格	描述	数据表
AMC1204_12	TI	获取价格	20MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement
AMC1204B	TI	获取价格	20MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement
AMC1204BDW	TI	获取价格	20MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement
AMC1204BDWR	TI	获取价格	20MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement
AMC1204BDWV	TI	获取价格	±250mV 输入、精密电流检测基本隔离式调制器 \| DWV \| 8 \| -
AMC1204BDWVR	TI	获取价格	±250mV 输入、精密电流检测基本隔离式调制器 \| DWV \| 8 \| -
AMC1204DW	TI	获取价格	20MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement
AMC1204DWR	TI	获取价格	20MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement
AMC1204EVM	TI	获取价格	Full-featured evaluation module
AMC1204-Q1	TI	获取价格	20 MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement

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