AMC3306M25集成电路（IC）的ADC/DAC-特殊用途规格书PDF中文资料

AMC3306M25属于集成电路（IC）的ADC/DAC-特殊用途。由德州仪器制造生产的AMC3306M25ADC/DAC - 特殊用途该产品族中的产品可用于模拟和数字表示的信息转换，适用于特定用例，或集成了通用数据转换器中不常见的其他功能。例如针对超声或汽车雷达应用集成了低噪声放大器和可变增益级的器件、注重音频和视频的产品、在段码式显示器上集成显示测量值功能的器件、集成输入输出电气隔离的器件等。

1 Features

• AEC-Q100 qualified for automotive applications:

– Temperature grade 1: –40°C to +125°C, TA

• Single-supply operation (3.3V or 5V) with

integrated DC/DC converter

• Input voltage range (±250mV) optimized for current

measurement using shunt resistors

• Low DC errors:

– Offset error: ±50μV (max)

– Offset drift: ±1μV/°C (max)

– Gain error: ±0.2% (max)

– Gain drift: ±35ppm/°C (max)

• High CMTI: 75kV/μs (min)

• System-level diagnostic features

• Low EMI: Meets CISPR-11 and CISPR-25

standards

• Safety-related certifications:

– 6000VPK reinforced isolation per DIN EN IEC

60747-17 (VDE 0884-17)

– 4250VRMS isolation for 1 minute per UL1577

2 Applications

• Compact, isolated shunt-based current sensing in:

– HEV/EV onboard chargers (OBC)

– HEV/EV DC/DC converters

– HEV/EV traction inverters

– HEV/EV battery management system (BMS)

3 Description

The AMC3306M25-Q1 is a precision, isolated deltasigma

(ΔΣ) modulator, optimized for shunt-based

current measurements. The fully integrated, isolated

DC/DC converter allows single-supply operation from

the low-side of the device which makes the device

a unique solution for space-constrained applications.

The reinforced capacitive isolation barrier is certified

according to DIN EN IEC 60747-17 (VDE 0884-17)

and UL1577 and supports a working voltage up to

1.2kVRMS.

The isolation barrier separates parts of the system

that operate on different common-mode voltage levels

and protects the low-voltage side from hazardous

voltages and damage.

The input of the AMC3306M25-Q1 is optimized

for direct connection to a low-impedance shunt

resistor or other, low-impedance voltage source

with low signal levels. The excellent DC accuracy

and low temperature drift supports accurate

current measurements over the extended industrial

temperature range from –40°C to +125°C.

Use a digital filter (such as a sinc3 filter) to decimate

the bitstream. By using this digital filter, the device

achieves 16 bits of resolution with an 85dB dynamic

range at a data rate of 78kSPS.