AD7490BCPZ

更新时间： 2024-12-01 12:27:15

品牌	Logo	应用领域
亚德诺 - ADI		转换器模数转换器 PC
页数	文件大小	规格书
28页	673K
描述
16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP

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AD7490BCPZ 数据手册

16-Channel, 1 MSPS, 12-Bit ADC

with Sequencer in 28-Lead TSSOP

Data Sheet

AD7490

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Fast throughput rate: 1 MSPS

Specified for V_DDof 2.7 V to 5.25 V

AD7490

REF

Low power at maximum throughput rates

5.4 mW maximum at 870 kSPS with 3 V supplies

12.5 mW maximum at 1 MSPS with 5 V supplies

16 (single-ended) inputs with sequencer

Wide input bandwidth

12-BIT

SUCCESSIVE

APPROXIMATION

ADC

T/H

INPUT

MUX

69.5 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

SCLK

DOUT

DIN

CONTROL

LOGIC

SEQUENCER

Full shutdown mode: 0.5 µA maximum

28-lead TSSOP and 32-lead LFCSP packages

DRIVE

AGND

Figure 1.

GENERAL DESCRIPTION

The AD7490 is a 12-bit high speed, low power, 16-channel,

successive approximation ADC. The part operates from a single

2.7 V to 5.25 V power supply and features throughput rates up

to 1 MSPS. The part contains a low noise, wide bandwidth

track-and-hold amplifier that can handle input frequencies in

excess of 1 MHz.

frequency because this is also used as the master clock to

control the conversion.

The AD7490 is available in a 32-lead LFCSP and a 28-lead

TSSOP package.

PRODUCT HIGHLIGHTS

1. The AD7490 offers up to 1 MSPS throughput rates. At

maximum throughput with 3 V supplies, the AD7490

dissipates just 5.4 mW of power.

The conversion process and data acquisition are controlled

using

and the serial clock signal, allowing the device to

easily interface with microprocessors or DSPs. The input signal

2. A sequence of channels can be selected, through which the

is sampled on the falling edge of , and conversion is also

AD7490 cycles and converts.

initiated at this point. There are no pipeline delays associated

with the part.

3. The AD7490 operates from a single 2.7 V to 5.25 V supply.

The V_DRIVEfunction allows the serial interface to connect

directly to either 3 V or 5 V processor systems independent

The AD7490 uses advanced design techniques to achieve very

low power dissipation at high throughput rates. For maximum

throughput rates, the AD7490 consumes just 1.8 mA with 3 V

supplies, and 2.5 mA with 5 V supplies.

of V_DD

4. The conversion rate is determined by the serial clock,

allowing the conversion time to be reduced through the

serial clock speed increase. The part also features various

shutdown modes to maximize power efficiency at lower

throughput rates. Power consumption is 0.5 µA, maximum,

when in full shutdown.

By setting the relevant bits in the control register, the analog

input range for the part can be selected to be a 0 V to REF_IN

input or a 0 V to 2 × REF_INinput, with either straight binary

or twos complement output coding. The AD7490 features 16

single-ended analog inputs with a channel sequencer to allow a

preprogrammed selection of channels to be converted sequen-

tially. The conversion time is determined by the SCLK

5. The part features a standard successive approximation

ADC with accurate control of the sampling instant via a

input and once off conversion control.

Rev. D

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

rights of third parties that may result from its 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 and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Technical Support

www.analog.com

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AD7490BCPZ 替代型号

型号	品牌	替代类型	描述	数据表
AD7490BCP-REEL	ADI	类似代替	IC 16-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, QCC32, MO-220-VHHD-2, LFCSP-3
AD7490BCPZ-REEL7	ADI	类似代替	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP
AD7490BCP	ADI	类似代替	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP

与AD7490BCPZ相关器件

型号	品牌	获取价格	描述	数据表
AD7490BCPZ-REEL7	ADI	获取价格	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP
AD7490BRU	ADI	获取价格	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP
AD7490BRU-EP-RL7	ADI	获取价格	IC 16-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO28, PLASTIC, MO-153AE, TS
AD7490BRU-REEL	ADI	获取价格	IC 16-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO28, MO-153AE, TSSOP-28, A
AD7490BRU-REEL7	ADI	获取价格	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP
AD7490BRUZ	ADI	获取价格	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP
AD7490BRUZ-REEL	ADI	获取价格	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP
AD7490BRUZ-REEL7	ADI	获取价格	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP
AD7490SRUZ-EP-RL7	ADI	获取价格	16-Channel, 1MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP
AD7492	ADI	获取价格	Evaluation Board for 12-bit high speed, low power, successive-approximation ADC

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