Integrated Circuit Chip AD678AD - Analog Devices - 12-Bit 200 kSPS Complete Sampling ADC



Detailed Product Description

Quick Detail:


12-Bit 200 kSPS Complete Sampling ADC





The AD678 is a complete, multipurpose 12-bit monolithic analog-to-digital converter, consisting of a sample-hold amplifier (SHA), a microprocessor compatible bus interface, a voltage reference and clock generation circuitry.

The AD678 is specified for ac (or “dynamic”) parameters such as S/N+D ratio, THD and IMD which are important in signal processing applications. In addition, the AD678K, B and T grades are fully specified for dc parameters which are important in measurement applications.

The AD678 offers a choice of digital interface formats; the 12 data bits can be accessed by a 16-bit bus in a single read operation or by an 8-bit bus in two read operations (8+4), with right or left justification. Data format is straight binary for unipolar mode and twos complement binary for bipolar mode. The input has a full-scale range of 10 V with a full power bandwidth of 1 MHz and a full linear bandwidth of 500 kHz. High input impedance (10 MΩ) allows direct connection to unbuffered sources without signal degradation.

This product is fabricated on Analog Devices’ BiMOS process, combining low power CMOS logic with high precision, low noise bipolar circuits; laser-trimmed thin-film resistors provide high accuracy. The converter utilizes a recursive subranging algorithm which includes error correction and flash converter circuitry to achieve high speed and resolution.

The AD678 operates from +5 V and ±12 V supplies and dissipates 560 mW (typ). The AD678 is available in 28-lead plastic DIP, ceramic DIP, and 44-lead J-leaded ceramic surface mount packages.

Screening to MIL-STD-883C Class B is also available.

*Protected by U.S. Patent Nos. 4,804,960; 4,814,767; 4,833,345; 4,250,445;4,808,908; RE30,586.





AC and DC Characterized and Specified(K, B and T Grades)

200k Conversions per Second

1 MHz Full Power Bandwidth

500 kHz Full Linear Bandwidth

72 dB S/N+D (K, B, T Grades)

Twos Complement Data Format (Bipolar Mode)

Straight Binary Data Format (Unipolar Mode)

10 M Input Impedance

8-Bit or 16-Bit Bus Interface

On-Board Reference and Clock

10 V Unipolar or Bipolar Input Range

Commercial, Industrial and Military Temperature

Range Grades

MIL-STD-883 Compliant Versions Available





Product Photos


Product Change Notification

Product Discontinuance 27/Oct/2011

Standard Package



Integrated Circuits (ICs)


Data Acquisition - Analog to Digital Converters (ADC)





Number of Bits


Sampling Rate (Per Second)


Data Interface


Number of Converters


Power Dissipation (Max)


Voltage Supply Source

Analog and Digital, Dual ±

Operating Temperature

-40°C ~ 85°C

Mounting Type

Through Hole

Package / Case

28-CDIP (0.605", 15.37mm)

Supplier Device Package


Number of Inputs and Type

1 Single-Ended, Unipolar; 1 Single-Ended, Bipolar



Competitive Advantage:


Warranty :180days for all goods

Free shipping:Order over $600 win a free shipment fee:goods weight below 3Kg.

SIERRA SUPERIOR ELECTRON LTD Electronics stocks components ready to ship. Hard to find, obsolete and highly allocated integrated circuits and semiconductors are all can be found by us.

SIERRA SUPERIOR ELECTRON LTD Electronics has established a well-developed logistics system and global logistics network, which can guarantee our service very quick, convenient and efficient.

Related Product