The OPA4820 provides a wideband, unity-gain stable, voltage-feedback amplifier with a very low input noise voltage and high output current using a low 5.7mA/ch supply current. At unity-gain, the OPA4820 gives > 600MHz bandwidth with < 1 dB peaking. The OPA4820 complements this high-speed operation with excellent DC precision in a low-power device. A worst-case input offset voltage of ±0.8mV and an offset current of ±500nA give excellent absolute DC precision for pulse amplifier applications.
Minimal input and output voltage swing headroom allow the OPA4820 to operate on a single +5V supply with > 2VPP output swing. While not a rail-to-rail (RR) output, this swing will support most emerging analog-to-digital converter (ADC) input ranges with lower power and noise than typical RR output op amps.
Exceptionally low dG/dP (0.01%/0.03°) supports low-cost composite video line driver applications. Existing designs can use the industry-standard quad pinout SO-14 package while emerging high-density portable applications can use the TSSOP-14.
HIGH BANDWIDTH: 220MHz (G = +2)
HIGH OUTPUT CURRENT: ±85mA
LOW INPUT NOISE: 2.5nV/Hz
LOW SUPPLY CURRENT: 5.7mA/ch
FLEXIBLE SUPPLY VOLTAGE:
±2V to ±6.3V Dual Supply
+4V to +12.6V Single Supply
EXCELLENT DC ACCURACY:
Maximum 25°C Input Offset Voltage = 0.8mV
Maximum 25°C Input Offset Current = 500nA
APPLICATIONS
LOWCOST VIDEO LINE DRIVERS
ADC PREAMPS
ACTIVE FILTERS
LOWNOISE INTEGRATORS
PORTABLE TEST EQUIPMENT
OPTICAL CHANNEL AMPLIFIERS
LOWPOWER, BASEBAND AMPLIFIERS
CCD IMAGING CHANNEL AMPLIFIERS
OPA4650 UPGRADE
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