MIC914BM5TR [ROCHESTER]

OP-AMP, 16000uV OFFSET-MAX, 300MHz BAND WIDTH, PDSO5, SOT-23, 5 PIN;


型号：	MIC914BM5TR
厂家：	Rochester Electronics
描述：	OP-AMP, 16000uV OFFSET-MAX, 300MHz BAND WIDTH, PDSO5, SOT-23, 5 PIN 放大器光电二极管
文件：	总14页 (文件大小：1142K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MIC914

160MHz Low-Power SOT23-5 Op Amp

General Description

Features

The MIC914 is a high-speed, operational amplifier with a

gain-bandwidth product of 160MHz. The part is unity gain

stable provided its output is loaded with at least 200Ω. It

has a very low 1.25mA supply current, and features the

IttlyBitty^®SOT-23-5 package.

• 160MHz gain bandwidth product

• 1.25mA supply current

• SOT23-5 package

• 160V/µs slew rate

• Drives any capacitive load

• 112dB CMRR

• Unconditionally stable with gain of +2 or –1

• Conditionally stable with gain of +1

Supply voltage range is from ±2.5V to ±9V, allowing the

MIC914 to be used in low-voltage circuits or applications

requiring large dynamic range.

The MIC914 is stable driving any capacitive load and

achieves excellent PSRR, making it much easier to use

than most conventional high-speed devices. Low supply

voltage, low power consumption, and small packing make

the MIC914 ideal for portable equipment. The ability to

drive capacitive loads also makes it possible to drive long

coaxial cables.

Applications

• Video

• Imaging

• Ultrasound

• Portable equipment

• Line drivers

• XDSL

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

___________________________________________________________________________________________________________

Ordering Information

Part Number

MIC914BM5

MIC914YM5

Temperature Range

–40° to +85°C

Package

Lead Finish

Standard

Pb-Free

5-Pin SOT23

–40° to +85°C

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-101807

October 2007

Micrel, Inc.

MIC914

Pin Configuration

Functional Pinout

IN+ V+ OUT

Part

Identification

A24

IN–

V–

IN–

V–

SOT23-5

Pin Description

Pin Number

Pin Name

OUT

V+

Pin Function

Output: Amplifier Output

Positive Supply (Input)

Non-inverting Input

Inverting Input

IN+

IN–

V–

Negative Supply (Input)

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MIC914

Absolute Maximum Ratings⁽¹⁾

Operating Ratings⁽²⁾

Supply Voltage (V_V+– V_V–).............................................20V

Differential Input Voltage (|V_IN+– V_IN–|)⁽³⁾.........................4V

Input Common-Mode Range (V_IN+– V_IN–).............V_V+to V_V–

Lead Temperature (soldering, 5 sec.)........................ 260°C

Storage Temperature (T_s) .......................................... 150°C

ESD Rating⁽⁴⁾...............................................................1.5kV

Supply Voltage (V_S)......................................... ±2.5V to ±9V

Junction Temperature (T_J) ..........................–40°C to +85°C

Thermal Resistance ...............................................260°C/W

Electrical Characteristics (±5V)

V_V+= +5V, V_V–= –5V, V_CM= 0V, V_OUT= 0V; R_L= 10Mꢀ; T_J= 25°C, bold values indicate –40°C ≤ T_J≤ +85°C; unless noted.

Symbol

Parameter

Condition

Min

Typ

Max

Units

V_OS

Input Offset Voltage

µV/°C

Temperature Coefficient

I_B

Input Bias Current

5.5

µA

I_OS

Input Offset Current

0.05

V_CM

Input Common-Mode Range

Common-Mode Rejection Ratio

Power Supply Rejection Ratio

CMRR > 60dB

–3.25

+3.25

CMRR

PSRR

–2.0V < V_CM< +2.0V

±5V < V_S< ±9V

A_VOL

Large-Signal Voltage Gain

R_L= 2k, V_OUT= ±2V

R_L= 200ꢀ, V_OUT= ±2V

V_OUT

Maximum Output Voltage Swing positive, R_L= 2kꢀ

+3.3

+3.0

3.5

negative, R_L= 2kꢀ

–3.5

3.2

–3.3

–3.0

positive, R_L= 200ꢀ

+3.0

+2.75

negative, R_L= 200ꢀ

–2.8

–2.45

–2.2

GBW

Gain-Bandwidth Product

–3dB Bandwidth

f = 80MHz, R_L= 1kꢀ

A_V= 2, R_L= 150ꢀ

300

213

104

0.01

MHz

A_V= 4, or A_V= –3, R_L= 400ꢀ

THD

Total Harmonic Distortion

R_F= R_G= 470ꢀ, A_V= 2, V_OUT= 2Vpp,

f = 2MHz

A_V= 2, V_OUT= 2Vpp, f = 2MHz, R_L= 500ꢀ

0.05

350

V/µs

Slew Rate

I_GND

Short-Circuit Output Current

source

sink

Supply Current

4.1

4.9

5.4

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MIC914

Electrical Characteristics

V_V+= +9V, V_V–= –9V, V_CM= 0V, V_OUT= 0V; R_L= 10Mꢀ; T_J= 25°C, bold values indicate –40°C ≤ T_J≤ +85°C; unless noted.

Symbol

Parameter

Condition

Min

Typ

Max

Units

V_OS

Input Offset Voltage

µV/°C

Temperature Coefficient

I_B

Input Bias Current

5.5

µA

I_OS

Input Offset Current

0.05

V_CM

Input Common-Mode Range

Common-Mode Rejection Ratio

Large-Signal Voltage Gain

CMRR > 60dB

–7.25

+7.25

CMRR

A_VOL

V_OUT

–6.0V < V_CM< 6.0V

R_L= 2kꢀ, V_OUT= ±6V

Maximum Output Voltage Swing positive, R_L= 2kꢀ

+7.2

+6.8

+7.4

negative, R_L= 2kꢀ

–7.4

–7.2

–6.8

GBW

Gain-Bandwidth Product

–3dB Bandwidth

R_L= 1kꢀ, f = 80MHz

A_V= 2 or A_V= –1, R_L= 150ꢀ

A_V= 4 or A_V= –3

350

240

140

0.01

MHz

THD

Total Harmonic Distortion

R_F= R_G= 470ꢀ, A_V= 2, V_OUT= 2Vpp,

f = 2MHz

A_V= 2, V_OUT= 2Vpp, f = 2MHz, R_L= 500ꢀ

0.04

500

V/µs

Slew Rate

I_GND

Short-Circuit Output Current

source

sink

Supply Current

4.2

5.0

5.5

Notes:

1. Exceeding the absolute maximum rating may damage the device.

2. The device is not guaranteed to function outside its operating rating.

3. Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in particular, input bias current is likely to

change).

4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.

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MIC914

Test Circuits

V_CC

10µF

V_CC

0.1µF

BNC

Input

10µF

0.1µF

BNC

10k

R1 5k

R7c 2k

₂0.1µF

Input

BNC

MIC913

Output

MIC913

Output

10k

⁵0.1µF

0.1F

BNC

200k

Input

10µF

V_EE

0.1µF

10µF

All resistors 1%

All resistors:

1% metal film

R2 R2 +R5 +R4

⎛

⎜

⎝

⎞

⎟

⎠

OUT

ERROR

V_EE

PSRR vs. Frequency

CMRR vs. Frequency

100pF

R2 4k

V_CC

10µF

10pF

R3 27k

₂0.1µF

BNC

Dynamic

Analyzer

MIC913

⁵0.1µF

R4 27k

10pF

10µF

V_EE

Noise Measurement

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MIC914

Typical Characteristics

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MIC914

Typical Characteristics (continued)

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MIC914

Typical Characteristics (continued)

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MIC914

Typical Characteristics (continued)

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MIC914

Functional Characteristics

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Functional Characteristics (continued)

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MIC914

It is important to ensure adequate supply bypassing

capacitors are located close to the device.

Application Information

The MIC913 is a high-speed, voltage-feedback opera-

tional amplifier featuring very low supply current. The

MIC913 is not unity-gain stable, it requires a minimum

gain of +2 or –1 to ensure stability. The device is

however stable even when driving high capacitance

loads.

Power Supply Bypassing

Regular supply bypassing techniques are recom-

mended. A 10µF capacitor in parallel with a 0.1µF

capacitor on both the positive and negative supplies are

ideal. For best performance all bypassing capacitors

should be located as close to the op amp as possible

and all capacitors should be low ESL (equivalent series

inductance), ESR (equivalent series resistance).

Surface-mount ceramic capacitors are ideal.

Driving High Capacitance

The MIC913 is stable when driving any capacitance (see

“Typical Characteristics: Gain Bandwidth and Phase

Margin vs. Load Capacitance”) making it ideal for driving

long coaxial cables or other high-capacitance loads.

Thermal Considerations

Phase margin remains constant as load capacitance is

increased. Most high-speed op amps are only able to

drive limited capacitance.

The SOT-23-5 package, like all small packages, has a

high thermal resistance. It is important to ensure the IC

does not exceed the maximum operating junction (die)

temperature of 85°C. The part can be operated up to the

absolute maximum temperature rating of 125°C, but

between 85°C and 125°C performance will degrade, in

particular CMRR will reduce.

Note: increasing load capacitance does reduce

the speed of the device (see “Typical Character-

istics: Gain Bandwidth and Phase Margin vs.

Load”). In applications where the load capaci-

tance reduces the speed of the op amp to an

unacceptable level, the effect of the load capaci-

tance can be reduced by adding a small resistor

(<100ꢀ) in series with the output.

A MIC913 with no load, dissipates power equal to the

quiescent supply current * supply voltage.

P_{D(no load)}= (V_V+– V_V–)I_S

When a load is added, the additional power is dissipated

in the output stage of the op amp. The power dissipated

in the device is a function of supply voltage, output

voltage and output current.

Feedback Resistor Selection

Conventional op amp gain configurations and resistor

selection apply, the MIC913 is NOT a current feedback

device. Resistor values in the range of 1k to 10k are

recommended.

P_{D(output stage)}= (V_V+– V_V–)I_OUT

Total Power Dissipation = P_{D(no load)}+ P_{D(output stage)}

Ensure the total power dissipated in the device is no

greater than the thermal capacity of the package. The

SOT23-5 package has a thermal resistance of 260°C/W.

Layout Considerations

All high speed devices require careful PCB layout. The

high stability and high PSRR of the MIC913 make this op

amp easier to use than most, but the following guidelines

should be observed: Capacitance, particularly on the two

inputs pins will degrade performance; avoid large copper

traces to the inputs. Keep the output signal away from

the inputs and use a ground plane.

T_J(max)− T_A(max)

Max. Allowable Power Dissipation =

260W

M9999-101807

October 2007

Micrel, Inc.

MIC914

Package Information

5-Pin SOT23 (M5)

MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA

TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com

The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its

use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.

Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product

can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant

into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A

Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully

indemnify Micrel for any damages resulting from such use or sale.

M9999-101807

October 2007

MIC914BM5TR [ROCHESTER]

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