Quick Detail:
12-Bit 200 kSPS Complete Sampling ADC
Description:
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.
Applications:
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
Specifications:
Datasheets |
AD678 |
Product Photos |
505-28-CDIP |
Product Change Notification |
Product Discontinuance 27/Oct/2011 |
Standard Package |
1 |
Category |
Integrated Circuits (ICs) |
Family |
Data Acquisition - Analog to Digital Converters (ADC) |
Series |
- |
Packaging |
Tube |
Number of Bits |
12 |
Sampling Rate (Per Second) |
200k |
Data Interface |
Parallel |
Number of Converters |
2 |
Power Dissipation (Max) |
745mW |
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 |
28-CDIP |
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.
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