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UCC1926

更新时间： 2024-10-02 03:57:19

品牌	Logo	应用领域
德州仪器 - TI		传感器
页数	文件大小	规格书
9页	262K
描述
【 20A Integrated Current Sensor

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UCC1926 数据手册

application

INFO

UCC1926

UCC2926

UCC3926

available

±20A Integrated Current Sensor

FEATURES

DESCRIPTION

• Integral Non-inductive Current Sense

Element with Internal Kelvin

Connections

The UCC3926 Current Sensor IC contains a wideband, transimpedance

amplifier for converting the current through an internal, non-inductive

1.3mΩ shunt resistor into a proportional voltage. The sense element oper-

ates in both high-side (V_DDreferenced) and low-side (GND referenced) ap-

plications.

• 20A Current Rating

• Bi-directional, High Side or Low Side

The UCC3926 can measure currents up to ±20A. This transimpedance am-

plifier gain is precisely trimmed to 33.3mΩ to convert a 15A input into a

500mV output signal. It has a very low input offset voltage from chop-

per-stabilization. A cross-switching block rectifies the input signal by forcing

the differential output, AOP positive with respect to the other differential

output, AON. SIGN indicates the polarity of the current.

Sensing

• Internal Temperature Nulling Circuitry

for Current Sense Element and

Amplifier

• Logic Compatible Current Direction

Status Output

The UCC3926 programmable amplifier provides three functions. It converts

the differential transimpedance output signal into a single-ended signal. It

has a user-controlled gain stage that sets the maximum current level to the

desired voltage and it level shifts the zero current point to the desired level

as well. A comparator then compares the output of the instrumentation am-

plifier to a user-set reference voltage on OCREF, which provides an

overcurrent status bit OC.

• Low Offset, Chopper Stabilized

Current Sense Amplifier

• Uncommitted Amplifier with User

Programmable Gain

• Overcurrent Indication with User

Programmable Threshold

The UCC3926 is available in the 16 pin SOIC package.

BLOCK DIAGRAM

UDG-97139-1

SLUS266A - OCTOBER 1999

12 3 4 5 6 7...9

中文翻译

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