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TI(德州仪器) OPA2846
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  • TI(德州仪器) OPA2846
  • TI(德州仪器) OPA2846
  • TI(德州仪器) OPA2846
  • TI(德州仪器) OPA2846
  • TI(德州仪器) OPA2846
  • TI(德州仪器) OPA2846
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OPA2846

OPA2846

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双通道、宽带、低噪声、电压反馈运算放大器

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The OPA2846 provides two very low-noise, high gain bandwidth, voltage-feedback op amps in a single package. Operating from a low 12.6mA/channel quiescent current, each channel provides a 1.2nV/Hz input voltage noise with a 1.65GHz gain bandwidth product. Minimum stable gain is specified at +7V/V while exceptional flatness is ensured at a gain of +10V/V.

The combination of low noise, high slew rate (600V/µs) and broad bandwidth allow very high SFDR differential receivers to be implemented. Additionally, decompensated, low-noise, voltage-feedback op amps are ideal for broadband transimpedance requirements. The dual channel OPA2846 provides matched channels for high-speed transimpedance requirements. With over 200MHz bandwidth at a gain of 20dB, excellent gain and phase matching are provided at IF frequencies for matched I and Q channel amplifiers.

  • HIGH BANDWIDTH: 300MHz (G = +10)
  • LOW INPUT VOLTAGE NOISE: 1.2nV/Hz
  • VERY LOW DISTORTION: –100dBc (5MHz)
  • HIGH SLEW RATE: 600V/µs
  • HIGH DC ACCURACY: VIO = 150µV
  • LOW SUPPLY CURRENT: 12.6mA/ch
  • HIGH GAIN BANDWIDTH PRODUCT: 1650MHz
  • STABLE FOR GAINS +7V/V
  • APPLICATIONS
    • HIGH DYNAMIC RANGE ADC PREAMPS
    • LOW-NOISE, WIDEBAND, TRANSIMPEDANCE AMPLIFIERS
    • WIDEBAND, HIGH GAIN AMPLIFIERS
    • LOW-NOISE DIFFERENTIAL RECEIVERS
    • VDSL LINE RECEIVERS
    • ULTRASOUND CHANNEL AMPLIFIERS
    • SECURITY SENSOR FRONT ENDS

All trademarks are the property of their respective owners.

ArchitectureVoltage FB
Number of channels2
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)10
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)12
GBW (typ) (MHz)1750
BW at Acl (MHz)500
Acl, min spec gain (V/V)7
Slew rate (typ) (V/µs)625
Vn at flatband (typ) (nV√Hz)1.2
Vn at 1 kHz (typ) (nV√Hz)1.2
Iq per channel (typ) (mA)12.6
Vos (offset voltage at 25°C) (max) (mV)0.65
Rail-to-railNo
FeaturesDecompensated
RatingCatalog
Operating temperature range (°C)-40 to 85
CMRR (typ) (dB)110
Input bias current (max) (pA)20000000
Offset drift (typ) (µV/°C)1.6
Iout (typ) (mA)80
2nd harmonic (dBc)76
3rd harmonic (dBc)109
Frequency of harmonic distortion measurement (MHz)5
SOIC (D)829.4 mm² 4.9 x 6
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