AD7278: 3 MSPS,8-Bit ADC in 6-Lead TSOT
The AD7278 is an 8-bit, high speed, low power, successive-approximation ADC. The part operates from a single 2.35V to 3.6 V power supply and features throughput rates up to 3 MSPS. The part contains a low-noise, wide bandwidth track/hold amplifier which can handle input frequencies in excess of 30 MHz.The conversion process and data acquisition are controlled using CS and the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and the conversion is also initiated at this point. There are no pipeline delays associated with the part.
The AD7278 uses advanced design techniques to achieve very low power dissipation at high throughput rates.The reference for the part is taken internally from VDD. This allows the widest dynamic input range to the ADC. Thus the analog input range for the part is 0 to VDD. The conversion rate is determined by the SCLK.
Applications
- Battery-Powered Systems
- - Personal Digital Assistants
- - Medical Instruments
- - Mobile Communications
- Instrumentation and Control Systems
- Data Acquisition Systems
- High-Speed Modems
- Optical Sensors
AD7278 特点
- Fast Throughput Rate: 3 MSPS
- Specified for VDD of 2.35 V to 3.6 V
- Low Power: 13.5 mW at 3 MSPS with 3 V Supplies
- Wide Input Bandwidth: 70 dB SNR at 1 MHz Input Frequency
- Flexible Power/Serial Clock Speed Management
- No Pipeline Delays
- High Speed Serial Interface
- SPI®/QSPI™/MICROWIRE™/DSP Compatible
- Power Down Mode: 1 µA max
- 6-Lead TSOT Package
- 8-lead MSOP Package
- AD7478 and AD7478A pin compatible
12-Bit Version: AD7276
10-Bit Version: AD7277
AD7278 功能框图
12-Bit Version: AD7276
10-Bit Version: AD7277
AD7278 技术指标
| Resolution (Bits) | 8bit | Interface | Ser,SPI |
| T-Put Rate | 3MSPS | Ain Range | Uni Vdd |
| # Chan | 1 | SNR (dB) | n/a |
| Supply V | Single(+2.5),Single(+3),Single(+3.3) | Pkg Type | SOP,SOT |
| Pwr Diss (max) | 19.8mW | -- | -- |
AD7278 芯片订购指南
| 产品型号 | 产品状态 | 封装 | Pins | 温度范围 | ROHS Compilant |
|---|---|---|---|---|---|
| AD7278BRMZ | Prodn | 8 ld MSOP | 8 | Ind | Y Material Declaration |
| AD7278BRMZ-REEL | Prodn | 8 ld MSOP | 8 | Ind | Y Material Declaration |
| AD7278BUJZ-500RL7 | Prodn | 6 ld TSOT | 6 | Ind | Y Material Declaration |
| AD7278BUJZ-REEL7 | Prodn | 6 ld TSOT | 6 | Ind | Y Material Declaration |
- 民用温度范围：0 ºC～＋70 ºC
- 军用温度范围：－55ºC ～＋125ºC
- 工业用温度范围：不同型号的产品的温度范围可能不同。
- 汽车工作温度范围：-40 ℃～ +125 ℃