ADA4500-2 [ADI]

8.7MHz, 15nV/√Hz, Rail-to-Rail I/O; 8.7MHz ， 15nV / √Hz的轨至轨I / O


型号：	ADA4500-2
厂家：	ADI
描述：	8.7MHz, 15nV/√Hz, Rail-to-Rail I/O 8.7MHz ， 15nV / √Hz的轨至轨I / O
文件：	总4页 (文件大小：140K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

8.7MHz, 15nV/√Hz, Rail-to-Rail I/O,

Zero Input Crossover Distortion Amplifiers

ADA4500-2

Preliminary Technical Data

FEATURES

PSRR: 100dB minimum

CMRR: 100 dB minimum

PIN CONFIGURATIONS

Supply current: 1.6 mA/amp max

Wide Bandwidth: 8.7 MHz

2.7 V to 5.5 V single-supply operation

Rail-to-rail input and output

Low noise

ADA4500-2

1.1 μV p-p from 0.1 Hz to 10 Hz

15nV/√Hz @ 1kHz

150 ꢀV offset voltage maximum

Very low input bias current: 10 pA maximum

APPLICATIONS

Figure 1. 8-Lead MSOP& LFCSP

(RM & CP Suffix)

Pressure and position sensors

Remote security

Medical monitors

Process control

Hazard detectors

Photo Diode applications

GENERAL DESCRIPTION

The ADA4500 is a dual 8.7MHz, 15 nV/√Hz, low power amplifier

featuring rail-to-rail input and output swings while operating from a 2.7

V to 5.5 V single power supply.

Employing a novel circuit technology, these amplifiers offer zero input

crossover distortion (high linearity and excellent PSRR and CMRR

performance), precision, wide bandwidth and very low bias current.

This technology offer the excellent CMRR over the supply range without

the cross-over distortion seen with the traditional complementary input

stage.

This combination of these features makes the ADA4500 amplifier an

ideal choice for precision sensor applications as it minimizes errors due

to power supply voltage variations over the supply voltage and maintains

high CMRR even for a rail-to-rail input op amp. This results in excellent

performance for driving Analog-to-Digital (A/D) converters without

degradation of performance. The input common mode range includes

both the negative and positive supplies.

Sensors, handheld instrumentation, precision signal conditioning, and

patient monitors can benefit from the features of the ADA4500.

The ADA4500 is specified for the extended industrial temperature range

(−40°C to +125°C). ADA4500-2 dual amplifiers are available in the

standard 8-lead MSOP and LFCSP.

Rev. PrA

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 registeredtrademarks arethe property of their respective owners.

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

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

Preliminary Technical Data

ADA4500-2

SPECIFICATIONS

ELECTRICAL CHARACTERISTICS; V_S= 2.7V

V_S= 2.7 V, V_CM= Vs/2, T_A= 25°C, R_L= 10kΩ, C_L= 30 pF, unless otherwise specified.

Table 1.

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

INPUT CHARACTERISTICS

Offset Voltage

Input Bias Current

V_OS

I_B

0 V < V_CM< 2.7 V

−40°C < T_A< +125°C

150

600

100

(V+) + 0.3

ꢀV

μV/°C

Input Offset Current

I_OS

0.5

−40°C < T_A< +125°C

V_CM= V- to V+

−40°C < T_A< +125°C

(V-) + 0.05 < V_OUT< (V+) - 0.05 110

Input Voltage Range

Common-Mode Rejection Ratio

(V-) -0.3

100

CMRR

A_VO

110

130

0.2

Large Signal Voltage Gain

Offset Voltage Drift

−40°C < T_A< +125°C

105

V_OS/T

Input Capacitance

Common-Mode Input Capacitance

Differential Input Capacitance

Input Impedance

TBD

MΩ

OUTPUT CHARACTERISTICS

Output Voltage High

V_OH

V_OL

I_SC

R_L= 10 kΩ to GND

R_L= 2 kΩ to GND

R_L= 10 kΩ to V_S

R_L= 2 kΩ to V_S

2.95

2.90

2.97

2.95

+20/-40

Output Voltage Low

100

Short Circuit Limit

POWER SUPPLY

Power Supply Rejection Ratio

PSRR

I_SY

V_S= 2.7 V to 5.5 V

−40°C to +125°C

V_O= V_S/2

100

110

Supply Current/Amplifier

1.35

1.6

1.9

−40°C < T_A< +125°C

DYNAMIC PERFORMANCE

Slew Rate

Gain Bandwidth Product

Phase Margin

GBP

4.7

8.6

V/μs

MHz

Degrees

ФM

NOISE PERFORMANCE

Total Harmonic Distortion + Noise

THD+N

V_S= 2.7 V, G= +1,

f = 20Hz to 20kHz

f = 0.1 to 10 Hz

f = 1 kHz

0.002

Peak-to-Peak Noise

Voltage Noise Density

Current Noise Density

e_{n p-p}

e_n

i_n

1.1

0.5

μV p-p

nV/√Hz

fA/√Hz

f = 1 kHz

Rev. PrA

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 registeredtrademarks arethe property of their respective owners.

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

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

Preliminary Technical Data

ADA4500-2

ELECTRICAL CHARACTERISTICS; V_S= 5V

V_S= 5 V, V_CM= Vs/2, T_A= 25°C, R_L= 10kΩ, C_L= 30 pF, unless otherwise specified.

Table 2.

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

INPUT CHARACTERISTICS

Offset Voltage

Input Bias Current

V_OS

I_B

0 V < V_CM< 5 V

−40°C < T_A< +125°C

150

600

100

(V+) + 0.3

ꢀV

μV/°C

Input Offset Current

I_OS

0.5

−40°C < T_A< +125°C

V_CM= V- to V+

−40°C < T_A< +125°C

(V-) + 0.05 < V_OUT< (V+) - 0.05 110

Input Voltage Range

Common-Mode Rejection Ratio

(V-) -0.3

100

CMRR

A_VO

110

130

0.2

Large Signal Voltage Gain

−40°C < T_A< +125°C

100

Offset Voltage Drift

V_OS/T

Input Capacitance

Common-Mode Input Capacitance

Differential Input Capacitance

Input Impedance

TBD

MΩ

OUTPUT CHARACTERISTICS

Output Voltage High

V_OH

V_OL

I_SC

R_L= 10 kΩ to GND

R_L= 2 kΩ to GND

R_L= 10 kΩ to V_S

R_L= 2 kΩ to V_S

4.95

4.90

4.97

4.95

Output Voltage Low

Short Circuit Limit

POWER SUPPLY

Power Supply Rejection Ratio

PSRR

I_SY

V_S= 2.7 V to 5.5 V

−40°C to +125°C

V_O= V_S/2

100

110

1.5

Supply Current/Amplifier

1.6

1.9

−40°C < T_A< +125°C

DYNAMIC PERFORMANCE

Slew Rate

Gain Bandwidth Product

Phase Margin

GBP

5.2

8.7

V/μs

MHz

Degrees

ФM

NOISE PERFORMANCE

Total Harmonic Distortion + Noise

THD+N

V_S= 5 V, G= +1,

f = 20Hz to 20kHz

f = 0.1 to 10 Hz

f = 1 kHz

0.002

Peak-to-Peak Noise

Voltage Noise Density

Current Noise Density

e_{n p-p}

e_n

i_n

1.1

0.5

μV p-p

nV/√Hz

fA/√Hz

f = 1 kHz

Rev. PrA | Page 3 of 4

ADA4500-2

Preliminary Technical Data

ABSOLUTE MAXIMUM RATINGS

Table 3.

THERMAL RESISTANCE

θ_JAis specified for the worst-case conditions, that is, a device

soldered in a circuit board for surface-mount packages.

Parameter

Rating

Supply Voltage

6 V

Input Voltage

-V_s– 0.3V, +V_S+0.3V

-V_s– 0.6V, +V_S+0.6V

Indefinite

Table 4. Thermal Resistance

Package Type

Differential Input Voltage¹

θ_JA

θ_JC

Unit

ºC/W

Output Short-Circuit Duration to Gnd

Storage Temperature Range RM, CP Packages −65°C to +150°C

Operating Temperature Range

Junction Temperature Range RM, CP

Packages

8-Lead MSOP (RM-8)

8-Lead LFCSP (CP-8)

TBD

−40°C to +125°C

−65°C to +150°C

Lead Temperature (Soldering, 60 sec)

300°C

ESD CAUTION

Differential input voltage is limited to 5.6 V or the supply voltage+0.6V,

whichever is less.

Stresses above those listed under Absolute Maximum Ratings

may cause permanent damage to the device. This is a stress

rating only; functional operation of the device at these or any

other conditions above those indicated in the operational

section of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect

device reliability.

registered trademarks are the property of their respective owners.

PR10617-0-2/12(PrA)

Rev. PrA | Page 4 of 4

ADA4500-2 [ADI]

相关型号：

ADA4500-2ACPZ-R7

ADA4500-2ACPZ-RL

ADA4500-2ARMZ

ADA4500-2ARMZ-R7

ADA4500-2ARMZ-RL

ADA4500-2_12

ADA4500-2_13

ADA4505-1

ADA4505-12

ADA4505-1ACBZ-R7

ADA4505-1ACBZ-RL

ADA4505-1ARJZ-R2