The AD7484 is a 14-bit high speed, low power, successive-approximation ADC. The part operates from a single 5 V power supply and features throughput rates up to 3 MSPS. The part contains a low-noise, wide bandwidth track/hold amplifier that can handle input frequencies in excess of 50 MHz.

The conversion process and data acquisition are controlled by a CONVST signal. Interfacing is via standard signal lines allowing the device to interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CONVST, and conversion is also initiated at this point. There are no pipeline delays associated with the part.

The AD7484 uses advanced design techniques to achieve very low power dissipation at high throughput rates. With a +5 V supply and 3 MSPS throughput rate, the AD7484 consumes just 18 mA. Two power saving modes are available on the AD7484: a nap mode that keeps the reference circuitry alive for quick power up times while only consuming 5 mW and a standby mode which reduces power consumption to a mere 5 µW.

The normal analog input range for the part is 0 to 2.5 V. However, the AD7484 features a full-scale overrange mode (using a 15th bit) allowing the input signal to accurately resolved up to ±8% of positive or negative full-scale. The AD7484 also allows for system offset removal by providing a user-programmable offset register that allows offsets as much as ±200 mV to be removed. The AD7484 has an onboard 2.5 V reference and also accepts an external reference.

Part#	Res	Throughput Rate	# of Inputs	Operating Pwr Diss
AD7484	14	3MSPS	1	90mW
AD7276	12	3MSPS	1	19.8mW
AD7400	16	10MSPS	1	90mW
AD7482	12	3MSPS	1	90mW
AD7621	16	3MSPS	1	86mW
AD7277	10	3MSPS	1	19.8mW
AD7278	8	3MSPS	1	19.8mW
AD775	8	20MSPS	1	85mW
AD9243	14	3MSPS	1	145mW
AD9240	14	10MSPS	1	330mW
AD9244-40	14	40MSPS	1	370mW

The model number is a specific version of a generic that can be purchased or sampled.

Status indicates the current lifecycle of the product. This can be one of 4 stages:

• Pre-Release: The model has not been released to general production, but samples may be available.
• Production: The model is currently being produced, and generally available for purchase and sampling.
• Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
• Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).

The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

This is the acceptable operating range of the device. The various ranges specified are as follows:

• Commercial: 0 to +70 degrees Celsius
• Military : -55 to +125 degrees Celsius
• Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
• Automotive: -40 to +125 degrees Celsius

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.

Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.