SLOSEB7A September   2024  – October 2024 LOG300

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics Low Noise Amplifier (LNA) 
    6. 5.6 Electrical Characteristics Log Detector
    7. 5.7 Electrical Characteristics LNA + Log Detector (AFE)
    8. 5.8 Typical Characteristics: VCC = 5V
    9. 5.9 Typical Characteristics: VCC = 3.3V
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Offset Correction Loop (OCL)
      2. 7.3.2 Single and Differential Input
      3. 7.3.3 Input Frequency Detect
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Ultrasonic Distance Measurement
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Third-Party Products Disclaimer
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

パッケージ・オプション

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発注情報

5.5 Electrical Characteristics Low Noise Amplifier (LNA) 

at TA = 25°C, VCC = 3.3V to 5V, LNA_Out = 1kΩ to AGND, RSOURCE = 50Ω, and input ac coupling capacitor (CIN) = 10nF to AGND (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DC PERFORMANCE
GLNA Internal gain  11 V/V
Internal gain error TA = –40°C to +125°C ±0.8 ±1 %
AC PERFORMANCE
SSBW Small-signal bandwidth LNA_Out = 20mVPP 39 MHz
LSBW Large-signal bandwidth 36 MHz
SR Slew rate 2V step at LNA_Out 200 V/µs
Total input referred noise   f > 100kHz, includes gain and bias resistors 2.6 nV/√Hz
Overdrive recovery time 2 × output overdrive 1 µs
Capacitive drive(1) < 3dB of peaking ∞ nF
INPUT
VLNA_In Linear input voltage  VCC = 5V 200 mVP
VCC = 3.3V 140
Internal bias voltage At LNA_In, TA = –40°C to +125°C VCC × 0.044 mV
Input impedance of LNA 1.7 || 1.8 kΩ || pF
OUTPUT
Output bias point of LNA LNA_In = open VBIAS × 11 V
Output impedance of LNA 0.850 1 1.150 kΩ
POWER SUPPLY
Quiescent operating current 2 2.7 mA
TA = –40°C to +125°C 3
POWER DOWN 
LNA enable voltage threshold Floating = enable VCC − 1.2 V
LNA disable voltage threshold GND + 0.6 V
Turn-on time Time from disable to enable 36 60 µs
Turn off time Time from enable to disable 130 200 ns
(1) Infinite capacitive drive possible due to presence of 1kΩ of isolation resistor