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AD7904BRUZ-REEL

更新时间: 2024-11-20 12:41:39
品牌 Logo 应用领域
亚德诺 - ADI 转换器模数转换器光电二极管
页数 文件大小 规格书
32页 525K
描述
4-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 16-Lead TSSOP

AD7904BRUZ-REEL 数据手册

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4-Channel, 1 MSPS, 8-/10-/12-Bit ADCs  
with Sequencer in 16-Lead TSSOP  
Data Sheet  
AD7904/AD7914/AD7924  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
AV  
DD  
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  
REF  
IN  
V
V
V
V
0
1
2
3
IN  
IN  
IN  
IN  
T/H  
8-/10-/12-BIT  
SUCCESSIVE  
APPROXIMATION  
ADC  
I/P  
MUX  
SCLK  
DOUT  
DIN  
High speed serial interface: SPI/QSPI™/  
MICROWIRE™/DSP compatible  
Shutdown mode: 0.5 µA maximum  
16-lead TSSOP package  
SEQUENCER  
CONTROL LOGIC  
CS  
AD7904/AD7914/AD7924  
Qualified for automotive applications  
V
DRIVE  
AGND  
Figure 1.  
GENERAL DESCRIPTION  
PRODUCT HIGHLIGHTS  
The AD7904/AD7914/AD7924 are, respectively, 8-bit, 10-bit, and  
12-bit, high speed, low power, 4-channel successive approxi-  
mation 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.  
1. 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.  
2. Four Single-Ended Inputs with Channel Sequencer.  
A consecutive sequence of channels can be selected,  
through which the ADC will cycle and convert on.  
3. 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 inter-  
face to connect directly to 3 V or 5 V processor systems,  
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  
CS  
on the falling edge of  
and conversion is 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.  
independent of VDD  
.
4. 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.  
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.  
5. No Pipeline Delay.  
The parts feature a standard successive approximation  
ADC with accurate control of the sampling instant via  
CS  
the  
input and once-off conversion control.  
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.  
Rev. C  
Document Feedback  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rightsof third parties that may result fromits use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks andregisteredtrademarks are the property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700 ©2002–2013 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 

AD7904BRUZ-REEL 替代型号

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AD7904BRU-REEL ADI

完全替代

4-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 16-Lead TSSOP
AD7904BRUZ ADI

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4-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 16-Lead TSSOP
AD7904BRU ADI

类似代替

4-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 16-Lead TSSOP

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