Datasheet LTC6228 (Analog Devices)

LTC6228 0.88nV/√Hz 730MHz, 500V/µs, Low Distortion Rail-to-Rail Output Op Amp with Shutdown
FEATURES DESCRIPTION
n
Ultra Low Voltage Noise: 0.88nV/√Hz
The LTC®6228 is a very fast, low noise rail-to-rail output, n
Low Distortion at High Speeds:
unity gain stable op amp. It has a gain-bandwidth product of
HD2/HD3 < −100dBc (Av = +1, 4V
890MHz and a slew rate of 500V/μs. The low input referred
P-P, 2MHz, RL = 1k
Ω
)
n
High Slew Rate: 500V/μs
voltage noise of only 0.88nV/√Hz and low distortion pefor- n mance of better than −100dB at 4V
GBW = 890MHz
P-P even for large signals n as fast as 2MHz make it ideal for applications that require
–3dB Frequency (AV = +1): 730MHz
n high dynamic range and deal with high slew rate signals, Input Offset Voltage: 250μV Max Across Temperature n such as driving A/D converters. Additional features include Offset Drift :0.4μV/°C Shutdown and the ability to enable/disable internal bias cur- n Input Common Mode Range Includes Negative Rail rent cancellation to optimize noise performance. n Output Swings Rail-to-Rail n Supply Current: 16mA/Channel Typ The combination of low offset, low offset drift, high gain n Shutdown Supply Current = 500µA and high CMRR make the LTC6228 the superior choice n for wide dynamic range applications. Operating Supply Range: 2.8V to 11.75V n Large Output Current: 80mA Min The LTC6228 family maintains excellent performance for n Very High Open Loop Gain: 5.6V/μV (135dB), RL = 1kΩ supply voltages of 2.8V to 11.75V and the devices are n Operating Temp Range: –40°C to 125°C specified at supplies of 3V, 5V and 10V(±5V). n Package Options: 8-Lead SOIC, TSOT-23, DC-6 With an input range extending to the negative rail and an output range that encompasses the entire supply range,
APPLICATIONS
the operational amplifier can accommodate wide swinging n signals, and single supply operation. Optical Electronics: Fast Transimpedance Amplifiers n Driving High Dynamic Range A/D Converters For space constrained PCB layouts, the LTC6228 is avail- n Active Filters able in a 2mm × 2mm DFN. It is also available in conven- n Video Amplifiers tional leaded packages. n High Speed Differential to Single-Ended Conversion These amplifiers can be used as improved replacements n Low Voltage Hi-Fi Amplification for many high speed op amps to improve speed, noise, All registered trademarks and trademarks are the property of their respective owners. distortion and dynamic range.
TYPICAL APPLICATION System Performance: 2 x LTC6228 Driving LTC2387-18 8192 Point FFT, –1dBFS LTC6228 Based Driver for the LTC2387-18 SAR ADC fSMPL = 15Msps, fIN = 1MHz
0 7.3V 7.5V P-P 1MHz INPUT SIGNAL SNR = 93.4dB 4.096V + –20 SFDR = 95dB CLK LTC6228 THD = –93.8dB 0V DCO –40 LVDS – 25Ω IN+ DA INTERFACE –60 82pF DB –80 LTC2387-18 82pF TWOLANES AMPLITUDE (dBFS) –100 4.096V + IN– TESTPAT 25Ω VCM PD –120 LTC6228 0.1µF 0V SAMPLE – CNV REFB CLOCK –140 –2.5V 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 FREQUENCY (MHz) 6228 TA01a 6228 TA02 Rev 0 Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics (VS = ±5V) Electrical Characteristics (VS = 5V, 0V) Electrical Characteristics (VS = 3V, 0V) Typical Performance Characteristics Pin Functions Applications Information Typical Applications Package Description Typical Application Related Parts