Datasheet > ADA4806-1_16

ADA4806-1_16

更新时间： 2024-11-29 01:19:07

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
25页	711K
描述
0.2 Î¼V/Â°C Offset Drift, 105 MHz, Low Power, Multimode, Rail-to-Rail Amplifier

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ADA4806-1_16 数据手册

0.2 µV/°C Offset Drift, 105 MHz, Low Power,

Multimode, Rail-to-Rail Amplifier

ADA4806-1

Data Sheet

FEATURES

TYPICAL APPLICATIONS CIRCUIT

Ultralow supply current

Full power mode: 500 µA

Sleep mode: 74 µA

ADA4806-1

2.5V REF

VDD

10µF

0.1µF

100nF

Shutdown mode: 2.9 µA

Dynamic power scaling

ADA4806-1

0V TO V

REF

Turn-on time from shutdown mode: 1.5 µs

Turn-on time from sleep mode: 0.45 µs

High speed performance with dc precision

Input offset voltage: 125 µV maximum

Input offset voltage drift: 1.5 µV/°C maximum

−3 dB bandwidth: 105 MHz

Slew rate: 160 V/ µs

Low noise and distortion

5.9 nV/√Hz input voltage noise with 8 Hz 1/f corner

−102 dBc/−126 dBc HD2/HD3 at 100 kHz

Wide supply range: 2.7 V to 10 V

Small package: 8-lead SOT-23

REF VDD

AD7980

IN+

IN–

20Ω

GND

2.7nF

Figure 1. Driving the AD7980 with the ADA4806-1

Sleep mode reduces the amplifier quiescent current to 74 µA

and provides a fast turn-on time of only 0.45 µs, enabling the

use of dynamic power scaling for sample rates approaching

2 MSPS. For additional power savings at lower samples rates,

the shutdown mode further reduces the quiescent current to

only 2.9 µA.

The ADA4806-1 operates over a wide range of supply voltages

and is fully specified at supplies of 3 V, 5 V and 5 V. This

amplifier is available in a compact, 8-lead SOT-23 package and

is rated to operate over the industrial temperature range of

−40°C to +125°C.

APPLICATIONS

Portable and battery-powered instruments and systems

High channel density data acquisition systems

Precision analog-to-digital converter (ADC) drivers

Voltage reference buffers

3.5

Portable point of sales terminals

Active RFID readers

3.0

2.5

GENERAL DESCRIPTION

The ADA4806-1 is a high speed, voltage feedback, rail-to-rail

output, single operational amplifier with three power modes:

full power mode, sleep mode, and shutdown mode. In full

power mode, this amplifier provides a wide bandwidth of 105 MHz

at a gain of +1, a fast slew rate 160 V/μs, and excellent dc precision

with a low input offset voltage of 125 μV (maximum) and an input

offset voltage drift of 1.5 μV/°C (maximum), while con-suming

only 500 μA of quiescent current. Despite being a low power

amplifier, the ADA4806-1 provides excellent overall

SHUTDOWN MODE

2.0

1.5

1.0

0.5

SLEEP MODE

100

1000

ADC SAMPLE RATE (ksps)

performance, making it ideal for low power, high resolution

data conversion systems.

Figure 2. Quiescent Power Dissipation vs. ADC Sample Rate,

Using Dynamic Power Scaling for the Two Low Power Modes

For data conversion applications where minimizing power

dissipation is paramount, the ADA4806-1 offers a method to

reduce power by dynamically scaling the quiescent power of the

ADC driver with the sampling rate of the system by switching the

amplifier to a lower power mode between samples.

Table 1. Complementary ADCs to the ADA4806-1

Throughput Resolution SNR

Product ADC Power (mW) (MSPS)

(Bits)

(dB)

90.5¹

AD7980

AD7982

AD7984

4.0

7.0

10.5

1.33

98.5

¹This SNR value is for the A Grade version of the AD7980.

Rev. 0

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.

Tel: 781.329.4700

Technical Support

www.analog.com

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与ADA4806-1_16相关器件

型号	品牌	获取价格	描述	数据表
ADA4806-1ARJZ-R2	ADI	获取价格	暂无描述
ADA4806-1ARJZ-R7	ADI	获取价格	0.2 µV/°C Offset Drift, 105 MHz, Low Power, Multimode, Rail-to-Rail Ampli
ADA4806-1RJ-EBZ	ADI	获取价格	0.2 Î¼V/Â°C Offset Drift, 105 MHz, Low Power,
ADA4807-1	ADI	获取价格	3.1 nV/âHz, 1 mA, 180 MHz, Rail-to-Rail Inp
ADA4807-1AKSZ-EBZ	ADI	获取价格	3.1 nV/âHz, 1 mA, 180 MHz, Rail-to-Rail Inp
ADA4807-1AKSZ-R2	ADI	获取价格	3.1 nV/âHz, 1 mA, 180 MHz, Rail-to-Rail Inp
ADA4807-1AKSZ-R7	ADI	获取价格	3.1 nV/âHz, 1 mA, 180 MHz, Rail-to-Rail Inp
ADA4807-1ARJZ-EBZ	ADI	获取价格	3.1 nV/âHz, 1 mA, 180 MHz, Rail-to-Rail Inp
ADA4807-1ARJZ-R2	ADI	获取价格	3.1 nV/âHz, 1 mA, 180 MHz, Rail-to-Rail Inp
ADA4807-1ARJZ-R7	ADI	获取价格	3.1 nV/âHz, 1 mA, 180 MHz, Rail-to-Rail Inp

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