ADA4941屬于開發(fā)板套件編程器的評估板-運算放大器。由亞德諾半導體技術有限公司制造生產(chǎn)的ADA4941評估板 - 運算放大器運算放大器評估板是裝有元器件的電路，用于提供特定集成電路或器件的工作實例。該產(chǎn)品族中的電路板提供了運算放大器實例。每個 IC 的通道類型有單通道、雙通道、三通道、四通道和八通道，放大器類型包括音頻、自動歸零、緩沖器、斬波器、電流反饋、電流檢測、差動、差分、四通道、儀表、隔離、J-FET、限幅、對數(shù)、功率、可編程增益、采樣保持、跨阻、可變增益、視頻、電壓反饋和零漂移。

GENERAL DESCRIPTION

The AD7903 is a dual 16-bit, successive approximation, analog to-digital converter (ADC) that operates from a single power supply, VDDx, per ADC. It contains two low power, high speed, 16-bit sampling ADCs and a versatile serial port interface (SPI). On the CNVx rising edge, the AD7903 samples the voltage difference between the INx+ and INx? pins. The voltages on these pins usually swing in opposite phases between 0 V and VREF. The externally applied reference voltage of the REFx pins (VREF) can be set independently from the supply voltage pins, VDDx. The power of the device scales linearly with throughput.

Using the SDIx inputs, the SPI-compatible serial interface can also daisy-chain multiple ADCs on a single 3-wire bus and provide an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate VIOx supplies.

The AD7903 is available in a 20-lead QSOP package with operation specified from ?40°C to +125°C.

FEATURES

16-bit resolution with no missing codes

Throughput: 1 MSPS

Low power dissipation

7.0 mW at 1 MSPS (VDD1 and VDD2 only)

12.0 mW at 1 MSPS (total)

140 μW at 10 kSPS

INL: ±0.5 LSB typical, ±2.0 LSB maximum

SINAD: 93.5 dB at 1 kHz

THD: ?112 dB at 1 kHz

True differential analog input range: ±VREF

0 V to VREF with VREF between 2.4 V to 5.1 V

Allows use of any input range

Easy to drive with the ADA4941-1

No pipeline delay

Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V logic

interface

Serial port interface (SPI)/QSPI/MICROWIRE/DSP compatible

20-lead QSOP package

Wide operating temperature range: ?40°C to +125°C

APPLICATIONS

Battery-powered equipment

Communications

Automated test equipment (ATE)

Data acquisition

Medical instrumentation

Redundant measurement

Simultaneous sampling