Datasheet AD8671, AD8672, AD8674 (Analog Devices)

Precision, Very Low Noise, Low Input Bias Current Operational Amplifiers Data Sheet AD8671/ AD8672/ AD8674 FEATURES PIN CONFIGURATIONS Very low noise: 2.8 nV/√Hz, 77 nV p-p NC 1 8 NC Wide bandwidth: 10 MHz –IN 2 AD8671 7 V+ Low input bias current: 12 nA max +IN TOP VIEW 3 6 OUT (Not to Scale) Low offset voltage: 75 μV max V– 4 5 NC
-001
High open-loop gain: 120 dB min NC = NO CONNECT
03718-B
Low supply current: 3 mA typ per amplifier
Figure 1. 8-Lead SOIC_N (R-8) and 8-Lead MSOP (RM-8)
Dual-supply operation: ±5 V to ±15 V Unity-gain stable No phase reversal OUT A 1 8 V+ –IN A 2 AD8672 7 OUT B APPLICATIONS +IN A TOP VIEW 3 6 –IN B (Not to Scale)
-003
V– 5 +IN B PLL filters 4
03718-B
Filters for GPS
Figure 2. 8-Lead SOIC-N (R-8) and 8-Lead MSOP (RM-8)
Instrumentation Sensors and controls Professional quality audio OUT A 1 14 OUT D –IN A 2 13 –IN D GENERAL DESCRIPTION +IN A 3 12 +IN D AD8674 V+ 4 TOP VIEW 11 V–
The AD8671/AD8672/AD8674 are very high precision amplifiers
+IN B (Not to Scale) 5 10 +IN C
featuring very low noise, very low offset voltage and drift, low
–IN B 6 9 –IN C
-005 input bias current, 10 MHz bandwidth, and low power
OUT B 7 8 OUT C
03718-B consumption. Outputs are stable with capacitive loads of over Figure 3. 14-Lead SOIC_N (R-14) and 14-Lead TSSOP (RU-14) 1000 pF. Supply current is less than 3 mA per amplifier at 30 V. The AD8671/AD8672/AD8674’s combination of ultralow noise, high precision, speed, and stability is unmatched. The MSOP version of the AD8671/AD8672 requires only half the board The AD8671, AD8672, and AD8674 are members of a growing space of comparable amplifiers. series of low noise op amps offered by Analog Devices, Inc.
Table 1. Voltage Noise
Applications for these amplifiers include high quality PLL
Package 0.9 nV 1.1 nV 1.8 nV 2.8 nV 3.8 nV
filters, precision filters, medical and analytical instrumentation, Single AD797 AD8597 ADA4004-1 AD8675 AD8671 precision power supply controls, ATE, data acquisition, and Dual AD8599 ADA4004-2 AD8676 AD8672 precision controls as well as professional quality audio. Quad ADA4004-4 AD8674 The AD8671/AD8672 are specified over the extended industrial temperature range (−40°C to +125°C), and the AD8674 is specified over the industrial temperature range (−40°C to +85°C). The AD8671/AD8672 are available in the 8-lead SOIC and 8-lead MSOP packages. The AD8674 is available in 14-lead SOIC and 14-lead TSSOP packages. Surface-mount devices in MSOP packages are available in tape and reel only.
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Document Outline Specifications Electrical Characteristics, ±5.0 V Electrical Characteristics, ±15 V Absolute Maximum Ratings ESD Caution Typical Performance Characteristics Applications Power Dissipation Calculations Unity-Gain Follower Applications Output Phase Reversal Total Noise vs. Source Resistance Total Harmonic Distortion (THD) and Noise Driving Capacitive Loads GPS Receiver Band-Pass Filter PLL Synthesizers and Loop Filters Outline Dimensions Ordering Guide