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 |
| GΩ |
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 | 0.5V≤VOUT≤4.5V | 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, -3.5V≤VOUT≤3.5V, 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: