AD7478A
PRODUCTION8-Bit, 1 MSPS, Low-Power A/D Converter in SC70 and MSOP Packages
- Part Models
- 6
- 1ku List Price
- Starting From $1.35
Part Details
- Fast throughput rate: 1 MSPS
- Specified for VDD of 2.35 V to 5.25 V
- Low power
3.6 mW at 1 MSPS with 3 V supplies
12.5 mW at 1 MSPS with 5 V supplies - Wide input bandwidth
71 dB SNR at 100 kHz input frequency - Flexible power/serial clock speed management
- No pipeline delays
- High speed serial interface
SPI/QSPI/MICROWIRE/DSP compatible - Standby mode: 1 µA maximum
- 6-lead SC70 package
- 8-lead MSOP
- Qualified for automotive applications
The AD7476A / AD7477A / AD7478A are 12-bit, 10-bit, and 8-bit high speed, low power, successive-approximation analog-todigital converters (ADCs), respectively. The parts operate from a single 2.35 V to 5.25 V power supply and feature throughput rates up to 1 MSPS. The parts contain a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 13 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 parts. The AD7476A / AD7477A / AD7478A use advanced design techniques to achieve low power dissipation at high throughput rates. The reference for the part is taken internally from VDD to allow the widest dynamic input range to the ADC. Thus, the analog input range for the part is 0 V to VDD. The conversion rate is determined by the SCLK.
PRODUCT HIGHLIGHTS
- First 12-/10-/8-bit ADCs in a SC70 package.
- High throughput with low power consumption.
- Flexible power/serial clock speed management. The conversion rate is determined by the serial clock, allowing the conversion time to be reduced through the serial clock speed increase. This allows the average power consumption to be reduced when a power-down mode is used while not converting. The parts also feature a power-down mode to maximize power efficiency at lower throughput rates. Current consumption is 1 µA maximum and 50 nA typically when in power-down mode.
- Reference derived from the power supply.
- No pipeline delay. The parts feature a standard successive approximation ADC with accurate control of the sampling instant via a CS input and once-off conversion control.
APPLICATIONS
- Battery-powered systems
Personal digital assistants
Medical instruments
Mobile communications - Instrumentation and control systems
- Data acquisition systems
- High speed modems
- Optical sensors
Documentation
Data Sheet 1
Technical Articles 1
Product Highlight 1
Product Highlight 1
Device Drivers 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD7478AAKSZ-500RL7 | 6-Lead SC70 | ||
| AD7478AAKSZ-REEL7 | 6-Lead SC70 | ||
| AD7478AARMZ | 8-Lead MSOP | ||
| AD7478AARMZ-REEL7 | 8-Lead MSOP | ||
| AD7478AWARMZ | 8-Lead MSOP | ||
| AD7478AWARMZ-RL | 8-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 8, 2010 - 04_0080 Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland. |
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| AD7478AAKSZ-500RL7 | PRODUCTION | |
| AD7478AAKSZ-REEL7 | PRODUCTION | |
| AD7478AARMZ | PRODUCTION | |
| AD7478AARMZ-REEL7 | PRODUCTION | |
| AD7478AWARMZ | PRODUCTION | |
| AD7478AWARMZ-RL | PRODUCTION | |
|
May 15, 2012 - 10_0006 Halogen Free Material Change for mini SOIC Products |
||
| AD7478AARMZ | PRODUCTION | |
| AD7478AARMZ-REEL7 | PRODUCTION | |
| AD7478AWARMZ | PRODUCTION | |
| AD7478AWARMZ-RL | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Evaluation Software 0
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Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| High Voltage Op Amps ≥12V 1 | ||
| ADA4899-1 | PRODUCTION | Unity-Gain Stable, Ultralow Distortion, 1 nV/√Hz Voltage Noise, High Speed Op Amp |
| Low Power Op Amps (≤ 1mA/amp) 1 | ||
| AD8031 | PRODUCTION | 2.7 V, 800 µA, 80 MHz Rail-to-Rail I/O Single Amplifier |
| Precision Op Amps (Vos ≤1mV & TCVos ≤2uV/C) 1 | ||
| AD8021 | PRODUCTION | Low Noise, High Speed Amplifier for 16-Bit Systems |
| Series Voltage References 2 | ||
| REF193 | PRODUCTION | 3.0V Precision Micropower, Low Dropout, Low Voltage Reference |
| REF195 | PRODUCTION | 5.0V Precision Micropower, Low Dropout, Low Voltage Reference |
| Shunt Voltage References 1 | ||
| AD780 | PRODUCTION | 2.5 V/3.0 V High Precision Reference |