OPA4323

現行

四路、5.5-V、20-MHz、零交叉低雜訊 (6 nV/√Hz) RRIO 運算放大器

產品詳細資料

Number of channels 4 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 1.7 Rail-to-rail In, Out GBW (typ) (MHz) 20 Slew rate (typ) (V/µs) 30 Vos (offset voltage at 25°C) (max) (mV) 1.25 Iq per channel (typ) (mA) 1.6 Vn at 1 kHz (typ) (nV√Hz) 8 Rating Catalog Operating temperature range (°C) 125 to -40 Offset drift (typ) (µV/°C) 0.4 Features Zero Crossover Input bias current (max) (pA) 5 CMRR (typ) (dB) 110 Iout (typ) (A) 0.04 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) 0.1 Output swing headroom (to negative supply) (typ) (V) 0.01 Output swing headroom (to positive supply) (typ) (V) -0.01
Number of channels 4 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 1.7 Rail-to-rail In, Out GBW (typ) (MHz) 20 Slew rate (typ) (V/µs) 30 Vos (offset voltage at 25°C) (max) (mV) 1.25 Iq per channel (typ) (mA) 1.6 Vn at 1 kHz (typ) (nV√Hz) 8 Rating Catalog Operating temperature range (°C) 125 to -40 Offset drift (typ) (µV/°C) 0.4 Features Zero Crossover Input bias current (max) (pA) 5 CMRR (typ) (dB) 110 Iout (typ) (A) 0.04 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) 0.1 Output swing headroom (to negative supply) (typ) (V) 0.01 Output swing headroom (to positive supply) (typ) (V) -0.01
SOT-23-THN (DYY) 14 13.692 mm² (4.2 mm × 3.26 mm) TSSOP (PW) 14 32 mm² (5 mm × 6.4 mm)
  • Zero cross amplifier for 1.7V to 5.5V applications
  • High rail-to-rail CMRR: 114dB typical
  • High gain-bandwidth product: 20MHz
  • Fast slew-rate: 33V/µs typical
  • Fast 0.01% settling: 200ns typical for 2V step
  • Low input offset voltage: ±150µV typical
  • Low noise floor: 5.5nV/√Hz typical at 10kHz
  • High output current: ±110mA typical ISC at 5.5V
  • Quiescent current: 1.6mA/ch typical
  • Rail-to-rail input and output
  • Unity-gain stable
  • Drives up to 150pF without sustained oscillations
  • Internal RFI and EMI filtered input pins
  • Operating temperature range: –40°C to 125°C
  • Zero cross amplifier for 1.7V to 5.5V applications
  • High rail-to-rail CMRR: 114dB typical
  • High gain-bandwidth product: 20MHz
  • Fast slew-rate: 33V/µs typical
  • Fast 0.01% settling: 200ns typical for 2V step
  • Low input offset voltage: ±150µV typical
  • Low noise floor: 5.5nV/√Hz typical at 10kHz
  • High output current: ±110mA typical ISC at 5.5V
  • Quiescent current: 1.6mA/ch typical
  • Rail-to-rail input and output
  • Unity-gain stable
  • Drives up to 150pF without sustained oscillations
  • Internal RFI and EMI filtered input pins
  • Operating temperature range: –40°C to 125°C

The OPAx323 family of op amps includes single (OPA323), dual (OPA2323), and quad-channel (OPA4323), low-voltage (1.7V to 5.5V), high-bandwidth (20MHz) amplifiers (op amps) with a zero-crossover input stage and a rail-to-rail output stage. The zero-crossover input stage enables OPAx323 to achieve high linearity and low distortion for input signals with rail-to-rail swing that are typical in ADC driver applications. Gain-bandwidth of 20MHz provides a fast settling response for ADC sampling speeds between 0.5MSPS to 5MSPS depending on the settling performance required. The OPAx323 is well-optimized for power savings as the device consumes just 1.6mA typical quiescent current.

The OPAx323 easily supports precision performance in high gain voltage sensing applications such as the wheatstone bridge, because of a maximum offset drift of 2µV/°C and thermal noise floor of 5.5nV/rt-Hz with a minimum of 100dB CMRR. This unique combination of higher precision (low offset, drift, noise, distortion, and CMRR) and higher gain-bandwidth (fast settling and slewing) enables use in multiple applications such as the motor rotary encoders, microphone audio pre-amplifiers and ultrasonic transducers.

The OPAx323 achieves a high slew-rate of 33V/µs allowing for fast detection of faults in motor current sensing applications. Unlike traditional amplifiers, the zero-cross over input stage allows for identical precision performance for both low and high-side sensing applications, thus making OPAx323 the best choice for current sensing in a variety of end equipments such as the solar string inverters, power delivery, grid and EV infrastructure. OPAx323S devices provide shutdown functionality for additional power savings and help disable the amplifier when idle. The family features standard and small size as well as leaded and QFN packages across all the channel variants.

The OPAx323 family of op amps includes single (OPA323), dual (OPA2323), and quad-channel (OPA4323), low-voltage (1.7V to 5.5V), high-bandwidth (20MHz) amplifiers (op amps) with a zero-crossover input stage and a rail-to-rail output stage. The zero-crossover input stage enables OPAx323 to achieve high linearity and low distortion for input signals with rail-to-rail swing that are typical in ADC driver applications. Gain-bandwidth of 20MHz provides a fast settling response for ADC sampling speeds between 0.5MSPS to 5MSPS depending on the settling performance required. The OPAx323 is well-optimized for power savings as the device consumes just 1.6mA typical quiescent current.

The OPAx323 easily supports precision performance in high gain voltage sensing applications such as the wheatstone bridge, because of a maximum offset drift of 2µV/°C and thermal noise floor of 5.5nV/rt-Hz with a minimum of 100dB CMRR. This unique combination of higher precision (low offset, drift, noise, distortion, and CMRR) and higher gain-bandwidth (fast settling and slewing) enables use in multiple applications such as the motor rotary encoders, microphone audio pre-amplifiers and ultrasonic transducers.

The OPAx323 achieves a high slew-rate of 33V/µs allowing for fast detection of faults in motor current sensing applications. Unlike traditional amplifiers, the zero-cross over input stage allows for identical precision performance for both low and high-side sensing applications, thus making OPAx323 the best choice for current sensing in a variety of end equipments such as the solar string inverters, power delivery, grid and EV infrastructure. OPAx323S devices provide shutdown functionality for additional power savings and help disable the amplifier when idle. The family features standard and small size as well as leaded and QFN packages across all the channel variants.

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 OPAx323 20MHz High Bandwidth, 114dB CMRR, Low Voltage (1.7V to 5.5V), RRIO Zero-Cross Operational Amplifier datasheet (Rev. C) PDF | HTML 2025/4/10
Circuit design Half-Wave Rectifier Circuit (Rev. B) PDF | HTML 2024/5/17
Circuit design Photodiode Amplifier Circuit (Rev. B) PDF | HTML 2024/5/2
Application brief Zero-crossover Amplifiers: Features and Benefits (Rev. B) PDF | HTML 2023/11/8

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OPAx323 PSpice Model (Rev. B)

SBOMCH0B.ZIP (81 KB) - PSpice 模型
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SBOMCJ2.ZIP (166 KB) - PSpice 模型
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SBOMCJ1.ZIP (288 KB) - PSpice 模型
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OPAx323 Stability Automated Inverting Amplifier PSpice Model

SBOMCJ0.ZIP (255 KB) - PSpice 模型
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OPAx323 Stability Automated Non-Inverting Amplifier PSpice Model

SBOMCI9.ZIP (259 KB) - PSpice 模型
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OPAx323 TINA-TI Reference Design (Rev. A)

SBOMCF9A (22 KB) - TINA-TI 參考設計
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SBOMCH1.ZIP (5 KB) - TINA-TI Spice 模型
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OPAx32x Simulation for Half-Wave Rectifier Circuit TINA-TI Reference Design

SBOMCH9 (2170 KB) - TINA-TI 參考設計
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23-THN (DYY) 14 Ultra Librarian
TSSOP (PW) 14 Ultra Librarian

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