LOG200

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포토다이오드 바이어스 및 다크 전류 보정을 지원하는 고속 정밀 대수 증폭기

제품 상세 정보

Input current range (min) (nA) 0.1 Input current range (max) (mA) 10 Offset voltage (input amplifiers) (max) (mV) 2000 Vs (±) (min) (V) 4.5 Vs (±) (max) (V) 12.6 Iq (max) (mA) 9 Dynamic range (typ) (dB) 160 Reference type Int Auxiliary op amps 1 Full-scale output voltage (min) (±V) 4.8 Full-scale output voltage (max) (±V) 12.3 Conformity error (initial 5 decades) (max) (%) 1.5 Conformity error (initial 5 decades) (typ. over temp) (%/°C) 0.2 Operating temperature range (°C) -40 to 125 Rating Catalog
Input current range (min) (nA) 0.1 Input current range (max) (mA) 10 Offset voltage (input amplifiers) (max) (mV) 2000 Vs (±) (min) (V) 4.5 Vs (±) (max) (V) 12.6 Iq (max) (mA) 9 Dynamic range (typ) (dB) 160 Reference type Int Auxiliary op amps 1 Full-scale output voltage (min) (±V) 4.8 Full-scale output voltage (max) (±V) 12.3 Conformity error (initial 5 decades) (max) (%) 1.5 Conformity error (initial 5 decades) (typ. over temp) (%/°C) 0.2 Operating temperature range (°C) -40 to 125 Rating Catalog
VQFN (RGT) 16 9 mm² 3 x 3
  • Ultra-fast transient response to low current levels:
    • Settling time for 10‑nA to 100‑nA step: 220‑ns rising, 630‑ns falling (typ)
    • Settling time for 100‑nA to 1‑µA step: 80‑ns rising, 240‑ns falling (typ)
  • Wide dynamic current range: 100 pA to 10 mA (160 dB)
  • High signal bandwidth:
    • 6 MHz at 1 µA to 10 mA
    • 120 kHz at 1 nA
  • High-accuracy transfer function:
    • 0.2 % max log conformity error
  • Integrated reference current (1 µA) and reference voltages (2.5 V and 1.65 V) for accurate ratio calculation
  • Low reference drift: 20 ppm/°C (typ)
  • Additional auxiliary high-speed op amp for differential ADC drive, single-ended gain or filter blocks, and other peripheral functions
  • Single supply (4.5 V to 12.6 V) or dual supply (±2.25 V to ±6.3 V) operation
  • Low quiescent current: 9.5 mA
  • Specified temperature range: –40°C to +125°C
  • Small package: 3 mm × 3 mm VQFN
  • Ultra-fast transient response to low current levels:
    • Settling time for 10‑nA to 100‑nA step: 220‑ns rising, 630‑ns falling (typ)
    • Settling time for 100‑nA to 1‑µA step: 80‑ns rising, 240‑ns falling (typ)
  • Wide dynamic current range: 100 pA to 10 mA (160 dB)
  • High signal bandwidth:
    • 6 MHz at 1 µA to 10 mA
    • 120 kHz at 1 nA
  • High-accuracy transfer function:
    • 0.2 % max log conformity error
  • Integrated reference current (1 µA) and reference voltages (2.5 V and 1.65 V) for accurate ratio calculation
  • Low reference drift: 20 ppm/°C (typ)
  • Additional auxiliary high-speed op amp for differential ADC drive, single-ended gain or filter blocks, and other peripheral functions
  • Single supply (4.5 V to 12.6 V) or dual supply (±2.25 V to ±6.3 V) operation
  • Low quiescent current: 9.5 mA
  • Specified temperature range: –40°C to +125°C
  • Small package: 3 mm × 3 mm VQFN

The LOG200 is a wide-dynamic-range current-to-voltage amplifier specifically designed to optimize current measurements across 160 dB of dynamic range with unparalleled accuracy and speed for optical communications, medical diagnostics, and industrial process control measurements. The LOG200 features two logarithmic amplifiers followed by a high-accuracy differential amplifier that convert current signals into a voltage representing the log-compressed ratio of the two currents. The current inputs are designed to feature a high-speed response from one input, and a highly accurate reference signal on the other input, allowing for a unique combination of fast transient response and high logarithmic conformity.

The LOG200 ratio is internally set to 250 mV/decade of current-to-voltage conversion. The device integrates an uncommitted high-speed amplifier to allow the output to be configured for differential or filtered responses, with a fast settling time to drive successive approximation analog-to-digital converters (SAR ADCs). The LOG200 also features a separate reference current and reference voltage designed to configure the device for optimized input current and common-mode voltages.

The LOG200 can be powered in a single-supply (4.5 V to 12.6 V) or dual-supply (±2.25 V to ±6.3 V) configuration and is specified from –40°C to +125°C.

The LOG200 is a wide-dynamic-range current-to-voltage amplifier specifically designed to optimize current measurements across 160 dB of dynamic range with unparalleled accuracy and speed for optical communications, medical diagnostics, and industrial process control measurements. The LOG200 features two logarithmic amplifiers followed by a high-accuracy differential amplifier that convert current signals into a voltage representing the log-compressed ratio of the two currents. The current inputs are designed to feature a high-speed response from one input, and a highly accurate reference signal on the other input, allowing for a unique combination of fast transient response and high logarithmic conformity.

The LOG200 ratio is internally set to 250 mV/decade of current-to-voltage conversion. The device integrates an uncommitted high-speed amplifier to allow the output to be configured for differential or filtered responses, with a fast settling time to drive successive approximation analog-to-digital converters (SAR ADCs). The LOG200 also features a separate reference current and reference voltage designed to configure the device for optimized input current and common-mode voltages.

The LOG200 can be powered in a single-supply (4.5 V to 12.6 V) or dual-supply (±2.25 V to ±6.3 V) configuration and is specified from –40°C to +125°C.

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기술 문서

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모두 보기3
유형 직함 날짜
* Data sheet LOG200 Precision, High-Speed Logarithmic Amplifier With Integrated Photodiode Bias datasheet PDF | HTML 2023/08/14
EVM User's guide LOG200 Evaluation Module User's Guide (Rev. A) PDF | HTML 2024/01/22
Certificate LOG200EVM EU Declaration of Conformity (DoC) 2023/06/30

설계 및 개발

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평가 보드

LOG200EVM — LOG200 evaluation module for high-speed precision logarithmic amplifier with photodiode bias

The LOG200 evaluation module (EVM) is a development platform for evaluating the LOG200, which is a precision, high-speed logarithmic amplifier with integrated photodiode bias and dark-current correction. LOG200 is optimized for current measurements across 160 dB of dynamic range with unparalleled (...)

사용 설명서: PDF | HTML
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시뮬레이션 모델

LOG200 PSpice Model

SBOMCF1.ZIP (97 KB) - PSpice Model
시뮬레이션 모델

LOG200 TINA-TI Reference Design

SBOMCF2.TSC (93 KB) - TINA-TI Reference Design
시뮬레이션 모델

LOG200 TINA-TI SPICE Model

SBOMCF0.ZIP (38 KB) - TINA-TI Spice Model
시뮬레이션 툴

PSPICE-FOR-TI — TI 설계 및 시뮬레이션 툴용 PSpice®

TI용 PSpice®는 아날로그 회로의 기능을 평가하는 데 사용되는 설계 및 시뮬레이션 환경입니다. 완전한 기능을 갖춘 이 설계 및 시뮬레이션 제품군은 Cadence®의 아날로그 분석 엔진을 사용합니다. 무료로 제공되는 TI용 PSpice에는 아날로그 및 전력 포트폴리오뿐 아니라 아날로그 행동 모델에 이르기까지 업계에서 가장 방대한 모델 라이브러리 중 하나가 포함되어 있습니다.

TI 설계 및 시뮬레이션 환경용 PSpice는 기본 제공 라이브러리를 이용해 복잡한 혼합 신호 설계를 시뮬레이션할 수 있습니다. 레이아웃 및 제작에 (...)
시뮬레이션 툴

TINA-TI — SPICE 기반 아날로그 시뮬레이션 프로그램

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
사용 설명서: PDF
패키지 다운로드
VQFN (RGT) 16 옵션 보기

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

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