AD7914
PRODUCTION4-Channel, 1 MSPS, 10-Bit A/D Converter with Sequencer in 16-Lead TSSOP
- Part Models
- 3
- 1ku List Price
- Starting From $4.70
Overview
- Fast throughput rate: 1 MSPS
- Specified for AVDD of 2.7 V to 5.25 V
- Low power:
6 mW maximum at 1 MSPS with 3 V supplies
13.5 mW maximum at 1 MSPS with
5 V supplies - 4 single-ended inputs with sequencer
- Wide input bandwidth:
AD7924, 70 dB SNR at 50 kHz input frequency
- Flexible power/serial clock speed management
- No pipeline delays
- High speed serial interface: SPI/QSPI™/ MICROWIRE™/DSP compatible
- Shutdown mode: 0.5 μA maximum
- 16-lead TSSOP package
- Qualified for automotive applications
The AD7904 / AD7914 / AD7924 are, respectively, 8-bit, 10-bit, and 12-bit, high speed, low power, 4-channel successive approximation ADCs. The parts operate from a single 2.7 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 8 MHz.
The conversion process and data acquisition are controlled using CS and the serial clock signal, allowing the device to easily inter-face with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and conversion is also initiated at this point. There are no pipeline delays associated with the part.
The AD7904 / AD7914 / AD7924 use advanced design techniques to achieve very low power dissipation at maximum throughput rates. At maximum throughput rates, the AD7904 / AD7914 / AD7924 consume 2 mA maximum with 3 V supplies; with 5 V supplies, the current consumption is 2.7 mA maximum.
Through the configuration of the control register, the analog input range for the part can be selected as 0 V to REFIN or 0 V to 2 × REFIN, with either straight binary or twos complement output coding. The AD7904 / AD7914 / AD7924 each feature four single-ended analog inputs with a channel sequencer to allow a pre-programmed selection of channels to be converted sequentially.
The conversion time for the AD7904 / AD7914 / AD7924 is determined by the SCLK frequency, which is also used as the master clock to control the conversion.
PRODUCT HIGHLIGHTS
- High Throughput with Low Power Consumption.
The AD7904/AD7914/AD7924 offer throughput rates up to 1 MSPS. At the maximum throughput rate with 3 V supplies, the AD7904/AD7914/AD7924 dissipate only 6 mW of power maximum. - Four Single-Ended Inputs with Channel Sequencer.
A consecutive sequence of channels can be selected, through which the ADC will cycle and convert on. - Single-Supply Operation with VDRIVE Function.
The AD7904/AD7914/AD7924 operate from a single 2.7 V to 5.25 V supply. The VDRIVE function allows the serial interface to connect directly to 3 V or 5 V processor systems, independent of VDD. - Flexible Power/Serial Clock Speed Management.
The conversion rate is determined by the serial clock, allowing the conversion time to be reduced by increasing the serial clock speed. The parts also feature two shutdown modes to maximize power efficiency at lower throughput rates. Current consumption is 0.5 µA maximum when in full shutdown. - No Pipeline Delay.
The parts feature a standard successive approximation ADC with accurate control of the sampling instant via the CS input and once-off conversion control.
Documentation
Data Sheet 1
Technical Articles 1
Product Highlight 1
Evaluation Design File 2
Device Drivers 1
Product Highlight 1
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 |
|---|---|---|---|
| AD7914BRUZ | 16-Lead TSSOP | ||
| AD7914BRUZ-REEL7 | 16-Lead TSSOP | ||
| AD7914WYRUZ-REEL7 | 16-Lead TSSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jan 16, 2012 - 11_0244 Halogen Free Material Change for Select TSSOP Products Assembled at Amkor |
||
| AD7914BRUZ | PRODUCTION | |
| AD7914BRUZ-REEL7 | PRODUCTION | |
| AD7914WYRUZ-REEL7 | PRODUCTION | |
|
Feb 8, 2010 - 04_0080 Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland. |
||
| AD7914BRUZ | PRODUCTION | |
| AD7914BRUZ-REEL7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 1
Evaluation Software 0
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Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Operational Amplifiers (Op Amps) 5 | ||
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| AD8031 | PRODUCTION | 2.7 V, 800 µA, 80 MHz Rail-to-Rail I/O Single Amplifier |
| AD8599 | PRODUCTION | Ultralow Distortion, Ultralow Noise Op Amp (Dual) |
| AD8605 | PRODUCTION | Precision, Low Noise, CMOS, RRIO Op Amp (single) |
| Voltage References 6 | ||
| AD1582 | PRODUCTION | 2.5V Micropower, Precisions Series Mode Voltage References |
| ADR391 | PRODUCTION | 2.5V Micropower, Low Noise Precision Voltage Reference with Shutdown |
| AD780 | PRODUCTION | 2.5 V/3.0 V High Precision Reference |
| ADR441 | PRODUCTION | Ultralow Noise, LDO XFET® 2.5V Voltage Reference w/Current Sink and Source |
| ADR431 | PRODUCTION | Ultralow Noise XFET® Voltage References with Current Sink and Source Capability |
| REF192 | PRODUCTION | 2.5V Precision Micropower, Low Dropout, Low Voltage Reference |
Evaluation Kits
AD7904/AD7914/AD7924 Evaluation kit