Dual 16-bit/14-bit ADC family
Dual simultaneous sampling
Pseudo differential analog inputs
4 MSPS throughput conversion rate
87.5 dB, VREF = 3.3 V external for 16-bit AD7383
83.5 dB, VREF = 3.3 V external for 14-bit AD7384
93.4 dB with RES = 1 and OSR = 8
On-chip oversampling function
Resolution boost function
INL error (maximum)
2.5 LSBs for 16-bit AD7383
1.0 LSB for 14-bit AD7384
2.5 V internal reference
High speed serial interface
−40°C to +125°C operation
16-lead LFCSP, 3 mm × 3 mm
The 16-bit AD7383 and the 14-bit AD7384 are a pin-compatible family of dual simultaneous sampling, high speed, low power, successive approximation register (SAR), analog-to-digital converters (ADCs) that operate from a 3.0 V to 3.6 V power supply and feature throughput rates up to 4 MSPS. The analog input type is pseudo differential and is sampled and converted on the falling edge of CS.
Integrated on-chip oversampling blocks improve dynamic range and reduce noise at lower bandwidths. A buffered internal 2.5 V reference is included. Alternatively, an external reference up to 3.3 V can be used.
The conversion process and data acquisition use standard control inputs that allow simple interfacing to microprocessors or digital signal processors (DSPs). The devices are compatible with 1.8 V, 2.5 V, and 3.3 V interfaces, using a separate logic supply.
The AD7383 and the AD7384 are available in a 16-lead lead frame chip scale package (LFCSP) with operation specified from −40°C to +125°C.
Multifunction pin names may be referenced by their relevant function only.