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具有从 10dB 到 13dB 的可选增益的高速全差分 ADC 驱动器放大器
PGA/VGA PGA
Number of channels (#) 1
BW @ Acl (MHz) 900
Vs (Max) (V) 5
Vs (Min) (V) 4.75
Acl, min spec gain (V/V) 4
Gain (Max) (dB) 13.7
Architecture Fully Differential ADC Driver
Slew rate (Typ) (V/us) 3400
Operating temperature range (C) -40 to 85
Features Shutdown, On chip gain resistors
  • 900MHz Bandwidth at Gain of +10dB
  • 3300V/μs Slew Rate, VOUT = 2V step
  • Adjustable Gain: +10dB to +13.7dB
  • IMD3: –100dBc, VOUT = 2VPP, RL = 400Ω,
    f = 100MHz
  • OIP3: 47dBm, f = 100MHz
  • Noise Figure: 10.7 dB, f = 100MHz

The THS770012 is a wideband, fully-differential amplifier, with adjustable gain range from +10dB to +13.7dB (with external components). It is designed and optimized specifically for driving 16-bit analog-to-digital converters (ADCs) at input frequencies up to 130MHz, and 14-bit ADCs at input frequencies up to 200MHz. This device provides high bandwidth, high-voltage output with low distortion and low noise, critical in high-speed data acquisition systems that require very high dynamic range, such as wireless base stations and test and measurement applications. This device also makes an excellent differential amplifier for general-purpose, high-speed differential signal chain and short line driver applications.

The THS770012 operates on a nominal +5V single supply, offers very fast, 7.5ns maximum recovery time from overdrive conditions, and has a power-down mode for power saving. The THS770012 is offered in a Pb-free (RoHS compliant) and green, QFN-24 thermally-enhanced package. It is characterized for operation over the industrial temperature range of –40°C to +85°C.