EC5601C|High Slew Rate Rail-to-Rail Single Operational Amplifiers with OTP


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High Slew Rate Rail-to-Rail Single

Operational Amplifiers with OTP

EC5601C

 

 

General Description

The EC5601 is a rail-to-rail one channel operational amplifier with wide supply range from 6V to 14V. It provides 0.5V

beyond the supply rails of common mode input range and capability of rail-to-rail output swing as well. This enables the

amplifier to offer maximum dynamic range at any supply voltage among many applications. ​​ A 20MHz gain bandwidth

product allows ​​ EC5601 to perform more stable than other devices in Internet applications.

With features ​​ of 20V/μs high slew ​​ rate and 200ns of fast settling time, as well as 60mA (sink and source) of high output

Driving capability, the EC5601is ideal for the requirements of flat panel Thin Film Transistor Liquid Crystal Displays

(TFT-LCD) panel gray scale ​​ reference ​​ buffers ​​ application. Due to insensitive ​​ to ​​ power ​​ supply ​​ variation, ​​ EC5601

offers ​​ flexibility ​​ of use in multitude ​​ of applications ​​ such ​​ as ​​ battery power, portable devices ​​ and ​​ anywhere ​​ low ​​ power ​​ consumption is ​​ concerned. With standard operational amplifier pin assignment, the EC5601 is offered in a space saving

6-Pin ​​ SOT-26 ​​ package ​​ and specified ​​ over ​​ the ​​ -40°C ​​ to +100°C ​​ temperature range.

 

Features

◆Wide supply voltage range 6V ~ 14V

◆Input range 500mV beyond the rails

◆Unity-gain stable

◆Rail-to-rail output swing

◆High slew rate 20V/μs

◆GBWP 20MHz

◆30MHz -3dB Bandwidth

◆Ultra-small Package SOT-26

 

Application

◆TFT-LCD Reference Driver

◆Touch-Screen Display

◆Wireless LANs

◆Personal Communication Devices

◆Direct Access Arrangement

◆Personal Digital Assistant (PDA)

◆Active Filter

◆Sampling ADC Amplifier

◆ADC/DAC Buffer

◆Electronic Notebook

◆Office Automation

◆Portable Electronics

 

Pin Assignment

 

 

 

 

 

 

 

 

 

 

Functional Pin Description

Pin Name

Pin Function

OUT

Operational Amplifier Output

VSS

IC GROUND or Negative power supply

IN+

Operational Amplifier Non-Inverting Input

IN-

Operational Amplifier Inverting Input

VCC

Supply Voltage VCC can range from 6V to 18V

 

Absolute Maximum Ratings (TA = 25 °C)

Values beyond absolute maximum ratings may cause permanent damage to the device. These are stress ratings only; functional device operation is not implied. Exposure to AMR conditions for extended periods may affect device reliability.

 

Supply Voltage between VS+ and VS- +18V  ​​ Storage Temperature   ​​ ​​ ​​ ​​​​ -65°C to +150°C

Input Voltage   ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ VS- - 0.5V, VS +0.5V  ​​ Maximum Die Temperature   ​​ ​​ ​​ ​​ ​​​​ +125°C

Maximum Continuous Output Current  ​​ ​​ ​​ ​​ ​​​​ 100mA  ​​ Operating Temperature   ​​ ​​ ​​ ​​ ​​​​ -40°C to +100°C

Lead Temperature   ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ 260°C

 

Important Note:

All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless

otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA

 

Electrical Characteristics

(VS+= +5V, VS - = -5V, RL = 10kΩ and CL = 10pF to 0V, TA = 25°C unless otherwise specified.)

Parameter

Description

Condition

Min

Typ

Max

Units

Input Characteristics

VOS

Input Offset Voltage

VCM= 0V

 

2

12

mV

TCVOS

Average Offset Voltage Drift

[1]

 

5

 

µV/°C

IB

Input Bias Current

VCM= 0V

 

2

50

nA

RIN

Input Impedance

 

 

1

 

G

CIN

Input Capacitance

 

 

1.35

 

pF

CMIR

Common-Mode Input Range

 

-5.0

 

+5.5

V

CMRR

Common-Mode Rejection Ratio

for VIN from -5.5V to 5.5V

50

70

 

dB

AVOL

Open-Loop Gain

0.5VVOUT4.5V

75

90

 

dB

Output Characteristics

VOL

Output Swing Low-

Vs+=8V,Vs=-8V,IL=-5mA

 

-7.92

-7.85

V

VOH

Output Swing High

Vs+=8V,Vs=-8V,IL=5mA

7.85

7.92

 

V

ISC

Short Circuit Current

 

 

130

 

mA

IOUT

Output Current

 

 

±100

 

mA

Power Supply Performance

PSRR

Power Supply Rejection Ratio

VS is moved from

±2.25V to ±7.75V

60

80

 

dB

IS

Supply Current

No Load

 

3

 

mA

Electrical Characteristics

(VS+= +5V, VS - = -5V, RL = 10kΩ and CL = 10pF to 0V, TA = 25°C unless otherwise specified.)

Parameter

Description

Condition

Min

Typ

Max

Units

Dynamic Performance

SR

Slew Rate [2]

Vs+=7V,Vs-=-7V,

-3.5VVOUT3.5V,

20% to 80%

 

4020

 

V/µs

tS

Settling to +0.1% (AV = +1)

(AV = +1), VO=2V Step

 

500

 

Ns

BW

-3dB Bandwidth

RL = 10kΩ, CL=10pF

 

30

 

MHz

GBWP

Gain-Bandwidth Product

RL = 10kΩ, CL=10pF

 

20

 

MHz

PM

Phase Margin

RL = 10kΩ, CL = 10 pF

 

50

 

Degrees

CS

Channel Separation

f = 1 MHz

 

75

 

dB

Temperature Performance

Temp

Thermal Shutdown

 

 

150

 

1. Measured over operating temperature range

2. Slew rate is measured on rising and falling edges

 

Typical Performance Curves

 

Applications Information

Product Description

The ​​ EC5601 ​​ rail-to-rail ​​ one ​​ channel ​​ amplifier ​​ is built ​​ on ​​ an ​​ advanced ​​ high ​​ voltage ​​ CMOS ​​ process. It’s ​​ beyond ​​ rails ​​ input ​​ capability ​​ and ​​ full ​​ swing ​​ of output ​​ range ​​ makes ​​ itself ​​ an ​​ ideal ​​ amplifier ​​ for ​​ use in a wide range of general-purpose applications. The features ​​ of ​​ 40V/μs ​​ high ​​ slew ​​ rate, ​​ fast ​​ settling ​​ time, 30MHz  ​​​​ of  ​​​​ GBWP  ​​​​ as  ​​​​ well  ​​​​ as  ​​​​ high  ​​​​ output  ​​​​ driving capability ​​ have ​​ proven ​​ the ​​ EC5601 ​​ a ​​ good ​​ voltage reference buffer in TFT-LCD for gray scale reference applications. ​​ High ​​ phase ​​ margin ​​ and ​​ extremely ​​ low power  ​​​​ consumption  ​​​​ make  ​​​​ the  ​​​​ EC5601  ​​​​ ideal  ​​​​ for connected ​​ in ​​ voltage ​​ follower ​​ mode ​​ for ​​ low ​​ power high drive applications.

 

Supply Voltage, Input Range and Output Swing

The EC5601 can be operated with a single nominal ​​ wide ​​ supply ​​ voltage ​​ ranging ​​ from ​​ 6V ​​ to 18V with stable performance

Over operating temperature of -40°C to +100°C. With 500mV greater than ​​ rail-to-rail ​​ input ​​ common ​​ mode ​​ voltage ​​ range

and ​​ 70dB ​​ of ​​ Common ​​ Mode ​​ Rejection ​​ Ratio, ​​ the EC5601 allows a ​​ wide ​​ range ​​ sensing ​​ among ​​ many applications without

having any concerns over exceeding the range and no compromise in accuracy. The output swings of the EC5601 typically

extend ​​ to ​​ within  ​​​​ 80mV of ​​ positive  ​​​​ and negative supply rails with load currents of 5mA. The output ​​ voltage ​​ swing ​​ can ​​ be  ​​​​ even ​​ closer ​​ to ​​ the supply ​​ rails ​​ by ​​ merely ​​ decreasing ​​ the ​​ load ​​ current. Figure ​​ 1 ​​ shows ​​ the ​​ input ​​ and ​​ output ​​ waveforms ​​ for the device in the unity-gain configuration. The amplifier is operated under ±5V supply with a 10KΩ load ​​ connected ​​ to ​​ GND.  ​​​​ The ​​ input ​​ is ​​ a ​​ 10Vp-p sinusoid. ​​ An ​​ Approximately 9.985 ​​ Vp-p of ​​ output voltage swing can be easily achieved.

 

 

 

 

 

 

 

 

 

 

 

Figure ​​ 1. ​​ Operation ​​ with ​​ Rail-to-Rail ​​ Input ​​ and Output

 

 

 

 

 

Output Short Circuit Current Limit

A ​​ +/-350mA ​​ short ​​ circuit ​​ current ​​ will ​​ be ​​ limited ​​ by the ​​ EC5601 ​​ if ​​ the ​​ output ​​ is ​​ directly ​​ shorted ​​ to ​​ the positive  ​​​​ or  ​​​​ the  ​​​​ negative  ​​​​ supply.  ​​​​ For  ​​​​ an  ​​​​ indefinitely output short circuit, the power dissipation could easily increase ​​ such ​​ that ​​ the ​​ device ​​ may ​​ be ​​ damaged. ​​ The internal ​​ metal ​​ interconnections ​​ are ​​ well ​​ designed ​​ to prevent the output continuous current from exceeding +/-100mA ​​ such ​​ that ​​ the ​​ maximum ​​ reliability ​​ can ​​ be well maintained.

Output Phase Reversal

The ​​ EC5601 is ​​ designed to ​​ prevent ​​ its ​​ output from being phase reversal as long as the input voltage is ​​ limited ​​ from

VS- -0.5V  ​​​​ to  ​​​​ VS+ + 0.5V. Figure ​​ 2 ​​ shows ​​ a ​​ photo ​​ of ​​ the ​​ device ​​ output ​​ with ​​ its input voltage driven beyond the supply rails. Although the phase of ​​ the ​​ device's output will not be reversed, the ​​ input's ​​ over-voltage ​​ should ​​ be ​​ avoided. An ​​ improper ​​ input ​​ voltage exceeds supply ​​ range by more ​​ than 0.6V may result in ​​ an over stress damage.

 

Power Dissipation

The EC5601 is designed for maximum output current capability. Even though  ​​​​ momentary output shorted to ground causes little damage to device. For the ​​ high ​​ drive ​​ amplifierEC5601,it is possible to exceed the 'absolute-maximum junction temperature' ​​ under ​​ certain ​​ load ​​ current ​​ conditions. Therefore, it ​​ is ​​ important ​​ to ​​ calculate the ​​ maximum junction temperature for the application to determine if load conditions need to be modified for the amplifier to ​​ remain ​​ in ​​ the ​​ safe ​​ operating ​​ area. ​​ The

maximum power dissipation allowed in a package is determined according to:

Where:

TJmax = Maximum Junction Temperature

TAmax= Maximum Ambient Temperature

ΘJA = Thermal Resistance of the Package

PDmax = Maximum Power Dissipation in the Package.

 

The maximum power ​​ dissipation actually produced by ​​ an ​​ IC ​​ is ​​ the ​​ total ​​ quiescent ​​ supply ​​ current ​​ times the ​​ total ​​ power ​​ supply ​​ voltage, ​​ plus ​​ the ​​ power ​​ in ​​ the IC due to the loads, or: