PRODUCT DESCRIPTION

The AD674B and AD774B are complete 12-bit successive approximation analog-to-digital converters with three-state output buffer circuitry for direct interface to 8- and 16-bit microprocessor busses. A high-precision voltage reference and clock are included on chip, and the circuit requires only power supplies and control signals for operation. The AD674B and AD774B are pin-compatible with the industry standard AD574A, but offer faster conversion time and bus access speed than the AD574A and lower power consumption. The AD674B converts in 15 μs (maximum) and the AD774B converts in 8 μs (maximum).

FEATURES

Complete Monolithic 12-Bit A/D Converters with Reference, Clock, and Three-State Output Buffers

Industry Standard Pinout

High Speed Upgrades for AD574A

8- and 16-Bit Microprocessor Interface

8 s (Max) Conversion Time (AD774B)

15 s (Max) Conversion Time (AD674B)

5 V, 10 V, 0 V–10 V, 0 V–20 V Input Ranges

Commercial, Industrial, and Military Temperature Range Grades

MIL-STD-883-Compliant Versions Available

AD774BAR屬于集成電路（IC） > 模數(shù)轉(zhuǎn)換器（ADC）。亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD774BAR模數(shù)轉(zhuǎn)換器（ADC）模數(shù)轉(zhuǎn)換器（ADC、A/D 或 A 轉(zhuǎn) D）對(duì)模擬信號(hào)進(jìn)行采樣，例如由麥克風(fēng)采集的聲音或傳感器的輸出，然后將其轉(zhuǎn)換為數(shù)字信號(hào)。一般來(lái)說(shuō)，數(shù)字輸出是二進(jìn)制補(bǔ)碼二進(jìn)制數(shù)，與輸入成比例。輸入類型可能是差分、偽差分或單端輸入。模數(shù)轉(zhuǎn)換器可按照位數(shù)、采樣率、輸入數(shù)、接口、轉(zhuǎn)換器數(shù)和架構(gòu)（例如自適應(yīng)增量、雙斜率、折疊、流水線、SAR、三角積分、兩步式）進(jìn)行選擇。