Datasheet > ACPL-796J-560E

ACPL-796J-560E

更新时间： 2024-11-01 12:32:43

品牌	Logo	应用领域
安华高科 - AVAGO		转换器光电二极管
页数	文件大小	规格书
16页	209K
描述
Optically Isolated Sigma-Delta Modulator

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ACPL-796J-560E 数据手册

ACPL-796J

Optically Isolated Sigma-Delta Modulator

Data Sheet

Description

Features

The ACPL-796J is a 1-bit, second-order sigma-delta (ꢀꢁꢂ)

modulator converts an analog input signal into a high-

speed data stream with galvanic isolation based on optical

coupling technology. The ACPL-796J operates from a 5 V

power supply with dynamic range of 80 dB with an appro-

priate digital ﬁlter. The diﬀerential inputs of ±±00 mV (full

scale ±ꢀ±0 mV) are ideal for direct connection to shunt

resistors or other low-level signal sources in applications

such as motor phase current measurement.

ꢃ 5 MHz to ±0 MHz external clock input range

ꢃ 1-bit, second-order sigma-delta modulator

ꢃ 16 bits resolution no missing codes (1± bits ENOB)

ꢃ 74 dB minimum SNR

ꢃ ꢀ.5 ꢄV/°C maximum oﬀset drift

ꢃ ±1ꢁ maximum gain error

ꢃ Internal reference voltage

ꢃ ±±00 mV linear range with single 5 V supply

ꢃ ꢀ V to 5.5 V wide supply range for digital interface

ꢃ –40°C to +105°C operating temperature range

ꢃ SO-16 package

The analog input is continuously sampled by means of

sigma-delta over-sampling using external clock, coupled

across the isolation barrier, which allows synchronous

operation with any digital controller. The signal infor-

mation is contained in the modulator data, as a density

of ones with data rate up to ±0 MHz, and the data are

encoded and transmitted across the isolation boundary

where they are recovered and decoded into high-speed

data stream of digital ones and zeros. The original signal

information can be reconstructed with a digital ﬁlter. The

serial interface has a wide supply range of ꢀ V to 5.5 V.

ꢃ ±5 kV/ꢄs common-mode transient immunity

ꢃ Safety and regulatory approval (pending):

IEC/EN/DIN EN 60747-5-5: 1±ꢀ0 Vpeak working

insulation voltage

UL 1577: 5000 Vrms/1min double protection rating

CSA: Component Acceptance Notice #5

Applications

Combined with superior optical coupling technology,

the modulator delivers high noise margins and excellent

immunity against isolation-mode transients. With 0.5 mm

minimum distance through insulation (DTI), the ACPL-796J

provides reliable double protection and high working

insulation voltage, which is suitable for fail-safe designs.

This outstanding isolation performance is superior to

alternatives including devices based on capacitive- or

magnetic-coupling with DTI in micro-meter range. Oﬀered

in an SO-16 package, the isolated ADC delivers the reli-

ability, small size, superior isolation and over-temperature

performance motor drive designers need to accurately

measure current at much lower price compared to tradi-

tional current transducers.

ꢃ Motor phase and rail current sensing

ꢃ Power inverter current and voltage sensing

ꢃ Industrial process control

ꢃ Data acquisition systems

ꢃ General purpose current and voltage sensing

ꢃ Traditional current transducer replacements

Functional Block Diagram

V_DD1

V_DD2

LED

Σ−Δ

V_IN

DECODER

LED

MDAT

DRIVER

MODULATOR/

ENCODER

The internal clock version modulators, HCPL-7860 (DIP-8/

gull wing surface mount package) and HCPL-786J (SO-16

package), are also available.

V_IN−

SHIELD

MCLKIN

GND2

CLOCK

DETECTOR

DRIVER

V_REF

SHIELD

ACPL-796J

GND1

Figure 1.

CAUTION: It is advised that normal static precautions be taken in handling and assembly

of this component to prevent damage and/or degradation which may be induced by ESD.

12 3 4 5 6 7...16

中文翻译

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ACPL-796J-560E 替代型号

型号	品牌	替代类型	描述	数据表
ACPL-796J-500E	AVAGO	完全替代	Optically Isolated Sigma-Delta Modulator
ACPL-796J-060E	AVAGO	完全替代	Optically Isolated Sigma-Delta Modulator
AMC1204BDWR	TI	功能相似	20MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement

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