Datasheet > AMC1204_12

AMC1204_12

更新时间： 2024-11-04 12:23:35

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
32页	846K
描述
20MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement

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AMC1204_12 数据手册

AMC1204

AMC1204B

www.ti.com

SBAS512C –APRIL 2011–REVISED AUGUST 2012

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

for Current-Shunt Measurement

Check for Samples: AMC1204, AMC1204B

FEATURES

DESCRIPTION

The AMC1204 and AMC1204B are 1-bit digital

•

±250mV Input Voltage Range Optimized for

Shunt Resistors

output, isolated delta-sigma (ΔΣ) modulators 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_PEAK

(AMC1204) and 4250V_PEAK(AMC1204B) according to

UL1577, IEC60747-5-2, and CSA standards or

specifications.

•

Certified Digital Isolation:

–

CSA, IEC60747-5-2, and UL1577 Approved

Isolation Voltage: 4250V_PEAK(AMC1204B)

Working Voltage: 1200V_PEAK

Transient Immunity: 15kV/µs

•

Long Isolation Barrier Lifetime (see

Application Report SLLA197)

The AMC1204 and AMC1204B provide 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 and

AMC1204B 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.

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)

•

External Clock Input for Easier

Synchronization

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 and

AMC1204B are available in SO-16 (DW) packages

and are specified from –40°C to +105°C.

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...32

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与AMC1204_12相关器件

型号	品牌	获取价格	描述	数据表
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
AMC1204-Q1_15	TI	获取价格	20 MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement

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