AD7994
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AD7994

4 Channel, 12-Bit ADC with I2C Compatible Interface in 16-Lead TSSOP

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $5.35
Features
  • 12-Bit ADC with Fast Conversion Time: 2 µs
  • Four Single-Ended Analog Input Channels
  • Specified for VDD of 2.7 V to 5.5 V
  • Low Power Consumption
  • Fast Throughput Rate: - 188 kSPS
  • Sequencer Operation
  • I2C® Compatible Serial Interface
  • I2C® Interface supports:
  • Standard, Fast, and High-Speed Modes
  • Out of Range Indicator
  • Pin-Selectable Addressing via AS
  • Automatic Shutdown Mode: - 1 µA max
Additional Details
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The AD7994 is a 4-channel, 10- and 12-bit, low power, successive approximation ADCs with an I2C-compatible interface. The parts operate from a single 2.7 V to 5.5 V power supply and feature a 2 µs conversion time. The parts contain a 4-channel multiplexer and track-and-hold amplifier that can handle input frequencies up to 11 MHz.

The AD7994 provides a two-wire serial interface which is compatible with I2C interfaces. The part comes in two versions, AD7994-0 and AD7994-1. Each version allows for a minimum of two different I2C addresses. The I2C interface on the AD7994-0 supports Standard and Fast I2C Interface Modes. The I2C interface on the AD7994-1 supports Standard, Fast and two High-Speed I2C Interface Modes.

The AD7994 normally remain in a shutdown state while not converting, and power up only for conversions. The conversion process can be controlled using the CONVST pin, by a command mode where conversions occur across I2C write operations, or an automatic conversion interval mode selected through software control. 

The AD7994 require an external reference that should be applied to the REFIN pin and can be in the range of 1.2 V to VDD. This allows the widest dynamic input range to the ADC. 

On-chip limit registers can be programmed with high and low limits for the conversion result, and an open-drain, out-of-range indicator output (ALERT) becomes active when the programmed high or low limits are violated by the conversion result. This output can be used as an interrupt.

PRODUCT HIGHLIGHTS

  1. 2 µs conversion time with low power consumption.
  2. I2C-compatible serial interface with pin-selectable addresses. Two AD7993 / AD7994 versions allow five AD7993 / AD7994 devices to be connected to the same serial bus.
  3. The parts feature automatic shutdown while not converting to maximize power efficiency. Current consumption is 1 µA max when in shutdown mode.
  4. Reference can be driven up to the power supply.
  5. Out-of-range indicator that can be software disabled or enabled.
  6. One-shot and automatic conversion rates.
  7. Registers can store minimum and maximum conversion results.
Part Models 4
1ku List Price Starting From $5.35

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD7994BRUZ-0
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AD7994BRUZ-0REEL
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AD7994BRUZ-1
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AD7994BRUZ-1REEL
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Product Lifecycle

PCN

Apr 5, 2021

- 21_0035

Amkor Philippines as an Alternate Site for TSSOP_4.4

AD7994BRUZ-0

PRODUCTION

AD7994BRUZ-0REEL

PRODUCTION

AD7994BRUZ-1

PRODUCTION

AD7994BRUZ-1REEL

PRODUCTION

Jan 20, 2012

- 11_0218

Halogen Free Material Change for Certain TSSOP Products at Carsem

AD7994BRUZ-0

PRODUCTION

AD7994BRUZ-0REEL

PRODUCTION

AD7994BRUZ-1

PRODUCTION

AD7994BRUZ-1REEL

PRODUCTION

Feb 8, 2010

- 04_0080

Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland.

AD7994BRUZ-0

PRODUCTION

AD7994BRUZ-0REEL

PRODUCTION

AD7994BRUZ-1

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Apr 5, 2021

- 21_0035

arrow down

Amkor Philippines as an Alternate Site for TSSOP_4.4

AD7994BRUZ-0

PRODUCTION

AD7994BRUZ-0REEL

PRODUCTION

AD7994BRUZ-1

PRODUCTION

AD7994BRUZ-1REEL

PRODUCTION

Jan 20, 2012

- 11_0218

arrow down

Halogen Free Material Change for Certain TSSOP Products at Carsem

AD7994BRUZ-0

PRODUCTION

AD7994BRUZ-0REEL

PRODUCTION

AD7994BRUZ-1

PRODUCTION

AD7994BRUZ-1REEL

PRODUCTION

Feb 8, 2010

- 04_0080

arrow down

Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland.

AD7994BRUZ-0

PRODUCTION

AD7994BRUZ-0REEL

PRODUCTION

AD7994BRUZ-1

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

EVAL-AD7994

AD7993/AD7994 Evaluation Board

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EVAL-AD7994

AD7993/AD7994 Evaluation Board

AD7993/AD7994 Evaluation Board

Product Detail

The EVAL-AD7994EBZ is a fully featured evaluation board for the AD7993 and AD7994. The evaluation board can be operated in complete standalone mode or connected to a PC via a standard USB interface. When operated with a PC, software is provided enabling the user to perform detailed analysis of the ADC's performance. This software includes the technical note describing the operation and set up of the evaluation board.


Please note: This Evaluation software does not run on Windows 8 or Windows 10 (USB driver is non-compliant with OS >Windows 7).

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