AD7384 Series

Dual, Simultaneous Sampling, 14-Bit, 4 MSPS, SAR ADCs, Pseudo Differential Input

Catalog

Dual, Simultaneous Sampling, 14-Bit, 4 MSPS, SAR ADCs, Pseudo Differential Input

Part	Number of A/D Converters	Architecture	Sampling Rate (Per Second)	Mounting Type	Configuration	Number of Inputs	Voltage - Supply, Analog [Max]	Voltage - Supply, Analog [Min]	Voltage - Supply, Digital [Min]	Voltage - Supply, Digital [Max]	Reference Type	Data Interface	Number of Bits	Features	Operating Temperature [Max]	Operating Temperature [Min]	Input Type	Package / Case	Ratio - S/H:ADC	Supplier Device Package
Analog Devices AD7384BCPZ-RL7	2	SAR	4M	Surface Mount	ADC	2	3.6 V	3 V	1.65 V	3.6 V	External Internal	SPI	14	Simultaneous Sampling	125 °C	-40 °C	Pseudo-Differential	16-WFQFN Exposed Pad CSP	0:2	16-LFCSP (3x3)
Analog Devices AD7384BCPZ-RL	2	SAR	4M	Surface Mount	ADC	2	3.6 V	3 V	1.65 V	3.6 V	External Internal	SPI	14	Simultaneous Sampling	125 °C	-40 °C	Pseudo-Differential	16-WFQFN Exposed Pad CSP	0:2	16-LFCSP (3x3)

Catalog

Dual, Simultaneous Sampling, 14-Bit, 4 MSPS, SAR ADCs, Pseudo Differential Input

Key Features

• Dual 16-bit/14-bit ADC family

• Dual simultaneous sampling

• Pseudo differential analog inputs

• 4 MSPS throughput conversion rate

• SNR (typical)87.5 dB, VREF = 3.3 V external for 16-bit AD738383.5 dB, VREF = 3.3 V external for 14-bit AD738493.4 dB with RES = 1 and OSR = 8

• 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 AD73831.0 LSB for 14-bit AD7384

• 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

• Alert function

Description

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 ofCS.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.PRODUCT HIGHLIGHTSDual simultaneous sampling and conversion with two complete ADC functions.Pin-compatible product family.High 4 MSPS throughput rate.Space saving 3 mm × 3 mm LFCSP.Integrated oversampling block to increase dynamic range, reduce noise, and reduce SCLK speed requirements.Pseudo differential analog inputs.Small sampling capacitor reduces amplifier drive burden.APPLICATIONSMotor control position feedbackMotor control current senseSonarPower qualityData acquisition systemsErbium doped fiber amplifier (EDFA) applicationsI and Q demodulation