Catalog
High Voltage, Differential 18-Bit ADC Driver
Key Features
• Single-ended-to-differential conversion
• Low distortion (VO, dm= 40 V p-p)−99 dBc HD at 100 kHz
• −99 dBc HD at 100 kHz
• Low differential output referred noise: 12 nV/√Hz
• High input impedance: 11 MΩ
• Fixed gain of 2No external gain components required
• No external gain components required
• Low output-referred offset voltage: 1.1 mV maximum
• Low input bias current: 3.5 μA maximum
• Wide supply range5 V to 26 VCan produce differential output signals in excess of 40 V p-p
• 5 V to 26 V
• Can produce differential output signals in excess of 40 V p-p
• High speed38 MHz, −3 dB bandwidth at 0.2 V p-p differential output
• 38 MHz, −3 dB bandwidth at 0.2 V p-p differential output
• Fast settling time200 ns to 0.01% for 12 V step on ±5 V supplies
• 200 ns to 0.01% for 12 V step on ±5 V supplies
• Disable feature
• Available in space-saving, thermally enhanced packages8-lead, 3 mm × 3 mm LFCSP8-lead SOIC
• 8-lead, 3 mm × 3 mm LFCSP
• 8-lead SOIC
• Low supply current: IS= 10 mA on ±12 V supplies
Description
AI
The ADA4922-1 is a differential driver for 16-bit to 18-bit analog-to-digital converters (ADCs) that have differential input ranges up to ±20 V. Configured as an easy-to-use, single-ended-to-differential amplifier, the ADA4922-1 requires no external components to drive ADCs. The ADA4922-1 provides essential benefits such as low distortion and high SNR that are required for driving ADCs with resolutions up to 18 bits.With a wide supply voltage range (5 V to 26 V), high input impedance, and fixed differential gain of 2, the ADA4922-1 is designed to drive ADCs found to in a variety of applications, including industrial instrumentation.The ADA4922-1 is manufactured on Analog Devices, Inc., proprietary, second-generation XFCB process that enables the amplifier to achieve excellent noise and distortion performance on high supply voltages.The ADA4922-1 is available in an 8-lead 3 mm × 3 mm LFCSP as well as an 8-lead SOIC package. Both packages are equipped with an exposed paddle for more efficient heat transfer. The ADA4922-1 is rated to work over the extended industrial temperature range, −40°C to +85°C.ApplicationsHigh voltage data acquisition systemsIndustrial instrumentationSpectrum analysisATEMedical instruments
