The ADA4941-1YRZ-RL is a low power, low noise differential driver foranalog-to-digital converters (ADCs) up to 18 bits in systemsthat are sensitive to power. The ADA4941-1YRZ-RL is configured in aneasy-to-use, single-ended-to-differential configuration andrequires no external components for a gain of 2 configuration.A resistive feedback network can be added to achieve gains greaterthan 2. The ADA4941-1YRZ-RL provides essential benefits, such as lowdistortion and high SNR that are required for driving highresolution ADCs.
With a wide input voltage range (0 V to 3.9 V on a single 5 Vsupply), rail-to-rail output, high input impedance, and a user-adjustablegain, the ADA4941-1YRZ-RL is designed to drive single-supplyADCs with differential inputs found in a variety of low powerapplications, including battery-operated devices and singlesupplydata acquisition systems.
The ADA4941-1YRZ-RL is ideal for driving the 16-bit and 18-bitPulSAR® ADCs, such as the AD7687, AD7690, and AD7691.The ADA4941-1YRZ-RL is manufactured on Analog Devices, Inc.,proprietary, second-generation, eXtra fast complementarybipolar (XFCB) process, which enables the amplifier to achieve18-bit performance on low supply currents.
The ADA4941-1YRZ-RL is available in a small 8-lead LFCSP as well as astandard 8-lead SOIC and is rated to work over the extendedindustrial temperature range, −40°C to +125°C.
Feature
- Single-ended-to-differential converter
- Excellent linearity
- Distortion −110 dBc at 100 kHz for VO, dm = 2 V p-p
- Low noise: 10.2 nV/√Hz, output-referred, G = 2
- Extremely low power: 2.2 mA (3 V supply)
- High input impedance: 24 MΩ
- User-adjustable gain
- High speed: 31 MHz, −3 dB bandwidth (G = +2)
- Fast settling time: 300 ns to 0.005% for a 2 V step
- Low offset: 0.8 mV maximum, output-referred, G = 2
- Rail-to-rail output
- Disable feature
- Wide supply voltage range: 2.7 V to 12 V
- Available in space-saving, 3 mm × 3 mm LFCSP
Applications
- Single-supply data acquisition systems
- Instrumentation
- Process control
- Battery-power systems
- Medical instrumentation
(Picture: Pinout)
