ChipApex | Global Electronic Components Supplier
AD7899ARS-3
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC ADC 14BIT 400KSPS 5V 28SSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：14
- Sampling Rate (Per Second)：400k
- Number of Inputs：-
- Input Type：-
- Data Interface：Parallel
- Configuration：-
- Ratio - S/H:ADC：-
- Number of A/D Converters：1
- Architecture：-
- Reference Type：-
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- Features：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：28-SSOP (0.209", 5.30mm Width)
- Supplier Device Package：28-SSOP
- Mounting Type：Surface Mount
- Grade：-
Download product information
Overview
The AD7899ARS-3 is a 14-bit successive-approximation analog-to-digital converter (ADC) operating from a single 5 V supply. It achieves a maximum throughput rate of 400 kSPS with a conversion time of 2.2 µs and a track/hold acquisition time of 0.3 µs. The device features an internal 2.5 V reference and accepts bipolar input ranges of ±2.5 V. It utilizes a high-speed parallel interface compatible with 3 V or 5 V logic levels via the VDRIVE pin. The component is housed in a 28-lead Shrink Small Outline Package (SSOP) and operates within a temperature range of -40°C to +85°C.
Feature Summary
- Integrated signal conditioning circuitry allows direct acceptance of ±2.5 V analog input ranges without external scaling components.
- High-speed parallel data bus enables efficient interfacing with microprocessors, microcontrollers, and digital signal processors.
- Analog inputs include overvoltage protection, permitting voltage excursions beyond the specified input range without device damage.
- Flexible clocking architecture supports both an internal laser-trimmed oscillator and an external clock source for precise timing control.
Applications
- Industrial process control systems requiring fast data acquisition
- Portable instrumentation powered by single-supply batteries
- Digital signal processing front-ends for audio and vibration analysis
Procurement Notes
Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm that the analog input range specification aligns with the system requirements, as different suffixes denote distinct voltage ranges. Ensure proper handling procedures are followed due to electrostatic discharge sensitivity.
Selection Notes
Select this variant when a ±2.5 V bipolar input range is required. Compare against AD7899AR-1 for ±5 V or ±10 V ranges, or AD7899AR-2 for unipolar applications. Consider the SSOP package dimensions if board space is constrained compared to standard SOIC options.
Part Context
The AD7899 series comprises three versions differentiated by analog input ranges: AD7899-1 for ±10 V/±5 V, AD7899-2 for 0 V to 5 V/2.5 V, and AD7899-3 for ±2.5 V. The AD7899ARS-3 specifically denotes the -3 version packaged in the shrink small outline form factor.
Replacement Considerations
AD7899BR-3 offers improved relative accuracy (±1.5 LSB vs ±2 LSB) with identical input ranges and packaging.
FAQ
How is the input range configured for the AD7899-3?
The AD7899-3 is factory-configured for a fixed ±2.5 V input range. The VINB pin should be connected to AGND or left unconnected.
Can the AD7899 operate with a 3 V digital interface?
Yes, the VDRIVE pin can be powered by a 3 V supply, allowing the digital inputs and outputs to interface directly with 3 V processors while maintaining the 5 V analog supply.
What is the function of the STBY pin?
The STBY pin controls the power-down mode. Driving this pin low places the device into standby mode, reducing power consumption significantly.
