OPA4684

활성

쿼드, 저전력, 전류 피드백 연산 증폭기

제품 상세 정보

Architecture Current FB Number of channels 4 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 210 BW at Acl (MHz) 210 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 820 Vn at flatband (typ) (nV√Hz) 3.7 Vn at 1 kHz (typ) (nV√Hz) 3.7 Iq per channel (typ) (mA) 1.7 Vos (offset voltage at 25°C) (max) (mV) 3.5 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 60 Input bias current (max) (pA) 10000000 Offset drift (typ) (µV/°C) 12 Iout (typ) (mA) 120 2nd harmonic (dBc) 67 3rd harmonic (dBc) 70 Frequency of harmonic distortion measurement (MHz) 5
Architecture Current FB Number of channels 4 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 210 BW at Acl (MHz) 210 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 820 Vn at flatband (typ) (nV√Hz) 3.7 Vn at 1 kHz (typ) (nV√Hz) 3.7 Iq per channel (typ) (mA) 1.7 Vos (offset voltage at 25°C) (max) (mV) 3.5 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 60 Input bias current (max) (pA) 10000000 Offset drift (typ) (µV/°C) 12 Iout (typ) (mA) 120 2nd harmonic (dBc) 67 3rd harmonic (dBc) 70 Frequency of harmonic distortion measurement (MHz) 5
SOIC (D) 14 51.9 mm² 8.65 x 6 TSSOP (PW) 14 32 mm² 5 x 6.4
  • MINIMAL BANDWIDTH CHANGE VERSUS GAIN
  • 170MHz BANDWIDTH AT G = +2
  • >120MHz BANDWIDTH TO GAIN > +10
  • LOW DISTORTION: < –78dBc at 5MHz
  • HIGH OUTPUT CURRENT: 120mA
  • SINGLE +5V TO +12V SUPPLY OPERATION
  • DUAL ±2.5 TO ±6.0V SUPPLY OPERATION
  • LOW SUPPLY CURRENT: 6.8mA Total
  • APPLICATIONS
    • LOW-POWER BROADCAST VIDEO DRIVERS
    • EQUALIZING FILTERS
    • SAW FILTER HIGH-GAIN POST AMPLIFIERS
    • MULTICHANNEL SUMMING AMPLIFIERS
    • WIDEBAND DIFFERENTIAL CHANNELS
    • ANALOG-TO-DIGITAL CONVERTERS INPUT DRIVERS
    • MULTIPLE POLE ACTIVE FILTERS
    • OPA4658 LOW-POWER UPGRADE

All trademarks are the property of their respective owners.

  • MINIMAL BANDWIDTH CHANGE VERSUS GAIN
  • 170MHz BANDWIDTH AT G = +2
  • >120MHz BANDWIDTH TO GAIN > +10
  • LOW DISTORTION: < –78dBc at 5MHz
  • HIGH OUTPUT CURRENT: 120mA
  • SINGLE +5V TO +12V SUPPLY OPERATION
  • DUAL ±2.5 TO ±6.0V SUPPLY OPERATION
  • LOW SUPPLY CURRENT: 6.8mA Total
  • APPLICATIONS
    • LOW-POWER BROADCAST VIDEO DRIVERS
    • EQUALIZING FILTERS
    • SAW FILTER HIGH-GAIN POST AMPLIFIERS
    • MULTICHANNEL SUMMING AMPLIFIERS
    • WIDEBAND DIFFERENTIAL CHANNELS
    • ANALOG-TO-DIGITAL CONVERTERS INPUT DRIVERS
    • MULTIPLE POLE ACTIVE FILTERS
    • OPA4658 LOW-POWER UPGRADE

All trademarks are the property of their respective owners.

The OPA4684 provides a new level of performance in low-power, wideband, current-feedback (CFB) amplifiers. This CFBPLUS amplifier is among the first to use an internally closed-loop input buffer stage that enhances performance significantly over earlier low-power CFB amplifiers. This new architecture provides many of the benefits of a more ideal CFB amplifier while retaining the benefits of very low power operation. The closed-loop input stage buffer gives a very low and linearized impedance path at the inverting input to sense the feedback error current. This improved inverting input impedance retains exceptional bandwidth to much higher gains and improves harmonic distortion over earlier solutions limited by inverting input linearity. Beyond simple high-gain applications, the OPA4684 CFBPLUS amplifier permits the gain setting element to be set with considerable freedom from amplifier bandwidth interaction. This allows frequency response peaking elements to be added, multiple input inverting summing circuits to have greater bandwidth, and low-power line drivers to meet the demanding requirements of studio cameras and broadcast video.

The output capability of the OPA4684 also sets a new mark in performance for low-power current-feedback amplifiers. Delivering a full ±4VPP swing on ±5V supplies, the OPA4684 also has the output current to support > ±3V swing into 50. This minimal output headroom requirement is complemented by a similar 1.2V input stage headroom giving exceptional capability for single +5V operation.

The OPA4684’s low 6.8mA supply current is precisely trimmed at 25°C. This trim, along with low shift over temperature and supply voltage, gives a very robust design over a wide range of operating conditions.

The OPA4684 provides a new level of performance in low-power, wideband, current-feedback (CFB) amplifiers. This CFBPLUS amplifier is among the first to use an internally closed-loop input buffer stage that enhances performance significantly over earlier low-power CFB amplifiers. This new architecture provides many of the benefits of a more ideal CFB amplifier while retaining the benefits of very low power operation. The closed-loop input stage buffer gives a very low and linearized impedance path at the inverting input to sense the feedback error current. This improved inverting input impedance retains exceptional bandwidth to much higher gains and improves harmonic distortion over earlier solutions limited by inverting input linearity. Beyond simple high-gain applications, the OPA4684 CFBPLUS amplifier permits the gain setting element to be set with considerable freedom from amplifier bandwidth interaction. This allows frequency response peaking elements to be added, multiple input inverting summing circuits to have greater bandwidth, and low-power line drivers to meet the demanding requirements of studio cameras and broadcast video.

The output capability of the OPA4684 also sets a new mark in performance for low-power current-feedback amplifiers. Delivering a full ±4VPP swing on ±5V supplies, the OPA4684 also has the output current to support > ±3V swing into 50. This minimal output headroom requirement is complemented by a similar 1.2V input stage headroom giving exceptional capability for single +5V operation.

The OPA4684’s low 6.8mA supply current is precisely trimmed at 25°C. This trim, along with low shift over temperature and supply voltage, gives a very robust design over a wide range of operating conditions.

다운로드

관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀
LMH6722 활성 쿼드 채널, 광대역 비디오 증폭기 Wider bandwidth (BW) (400 MHz), slew rate (1800 V/µs) and lower noise (3.4 nV/rtHz)

기술 자료

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* Data sheet Quad, Low-Power, Current-Feedback Operational Amplifier datasheet (Rev. G) 2008/07/02

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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