unisonic technologies co., ltd opa2336 preliminary cmos ic www.unisonic.com.tw 1 of 6 copyright ? 2010 unisonic technologies co., ltd qw-r502-392.a single-supply, micropower cmos operational amplifiers ? description the utc opa2336 is a cmos operational amplifier. it is operated on a 2.1v (min.) single supply. a100k ? load is driven by the rail-to-rail output and the accu racy of the output voltage is ensured at 3mv. the utc opa2336 is characterized by its low quiescent current (20 a/amplifier), low offset voltage (125 v max), low input bias current (1pa), and high open-loop gain (115db). the utc opa2336 features completely independent circuitry for lowest crosstalk and freedom from interaction. the utc opa2336 is particularly designed for battery-powered applications and the common-mode range extending to the negative supply makes it ideal for single-supply applications. in addition to the applications mentioned above, the utc opa2336 is suitable for portable devices, high-impedance applications, photodiode, pre-amps, precision integrators, medical instruments, and test equipment. ? features * operating on a single-supply * rail-to-rail output (accuracy: 3mv) * low power dissipation: i q =20 a/amplifier * low offset voltage up to 125 v (max.) * power supply specified from 2.3v to 5.5v * halogen free ? ordering information ordering number package packing OPA2336G-S08-R sop-8 tape reel
opa2336 preliminary cmos ic unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r502-392.a ? pin configuration 1 2 3 4 5 6 7 8 v+ out b -in b +in b v- +in a -in a out a a b + - + - ? pin description pin no. pin name description 1 outa output of channel a 2 -in a negative input of channel a 3 +in a positive input of channel a 4 v- ground 5 +in b positive input of channel b 6 -in b negative input of channel b 7 out b output of channel b 8 v+ power supply
opa2336 preliminary cmos ic unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r502-392.a ? absolute maximum rating parameter symbol ratings unit supply voltage v s 7.5 v signal input terminals voltage (note 2) v it (v-)-0.3~(v+)+0.3 v signal input terminals current (note 2) i it 10 ma output short-circuit (note 3) i os continuous a operating junction temperature t opr -40~ +125 c storage temperature t stg -55~ +125 c 1. absolute maximum ratings are those values be yond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. 2. input terminals are diode-clamped to the power supply rails. input signals that can swing more than 0.3v beyond the supply rails should be current-limited to 10ma or less. note: 3. short-circuit to ground, one amplifier per package. ? thermal data parameter symbol ratings unit junction to ambient ja 150 c/w ? electrical characteristics (at t a =+25c, v s =+5v,r l =25k ? connected to v s /2, unless otherwise specified.) parameter symbol test conditions min typ max unit offset voltage input offset voltage v i(off) 60 125 v input offset voltage vs. temperature dv os /dt 1.5 v/c input offset voltage vs. power supply psrr v s = 2.3v ~ 5.5v 25 100 v/v over temperature v s = 2.3v ~ 5.5v 130 v/v channel separation, dc 0.1 v/v input bias current input bias current i bias 1 10 pa over temperature 60 pa input offset current i o(off) 1 10 pa noise input voltage noise, f = 0.1 ~ 10hz 3 v p-p input voltage noise density, f = 1khz e n 40 nv/ hz current noise density, f = 1khz i n 30 fa/ hz input voltage range common-mode voltage range v cm -0.2 (v+)-1 v common-mode rejection ratio cmrr -0.2v opa2336 preliminary cmos ic unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r502-392.a ? electrical characteristics(cont.) frequency response gain-bandwidth product gbw v s =5v, g=1 100 khz slew rate sr v s =5v, g=1 0.03 v/s overload recovery time v in g = v s 100 s output voltage output swing from rail (note 2) v os r l =100k ? , a ol 70db 3 mv voltage output swing from rail (note 2) r l =25k ? , a ol 90db 20 100 mv over temperature r l =25k ? , a ol 90db 100 mv voltage output swing from rail (note 2) r l =5k ? , a ol 90db 70 500 mv over temperature r l =5k ? , a ol 90db 500 mv short-circuit current i sc 5 ma capacitive load drive c load pf power supply specified voltage range v s 2.3 5.5 v minimum operating voltage 2.1 v quiescent current (per amplifier) i q i out =0 20 32 a over temperature i out =0 36 a temperature range specified range -40 +85 c operating range -55 +125 c storage range -55 +125 c 1. v s = +5v. note: 2. output voltage swings are measured between the output and positive and neg ative power-supply rails.
opa2336 preliminary cmos ic unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r502-392.a ? application information the utc opa2336 is a cmos operational amplifie r, its outstanding features and fu nctions make it suitable for several applications. the utc opa2336 is unity-gain stable and can be protected under the reverse battery voltages conditions. 0.01 f ceramic capacitors are required to bypass the power supply. operating voltage the utc opa2336 is operating on a single supply ranging from 2.1v to +5.5v, most behavior remains unchanged throughout the full oper ating voltage range. the utc opa2336 is fully specified for operation from +2.3v to +5.5v; a single limit applies over the supply range. moreover, this device performs well over a temperature range of -40c to +85c. input voltage the utc opa2336 allows input common-mode range varies from (v -)-0.2v to (v+)-1v, normal behaviors should operate within this range. in addition, the absolute ma ximum input voltage is 300mv beyond the supplies. thus, inputs greater than the input common-mo de range but less than maximum input voltage, while not valid, will not cause any damage to the op-amp. normally, input bias current is approximately 1pa. howeve r, the input pin may be applied to an excess inrush current, which is encountered when input voltages are highe r than the power supplies. this device is not damaged unless the current on the input pins is less than 10ma. this is easily accomplis hed with an input resistor, as shown in figure 1 . 5k + - opa2336 v in i overlaod 10ma max +5v v out figure 1. input current protection for voltages exceeding the supply voltage capacitive load and stability the utc opa2336 under certain conditions may become unst able. for device?s stability, there are many factors considered besides the amplifier gain, load value and so on. the utc opa2336 can drive a wide range of capacitive loads , it can drive approximately 10,000pf when properly configured. an op amp in unity -gain configuration is the most vulner able to capacitive load. the capacitive load reacts with the op amp?s output resi stance, along with any additional load resistance, to create a pole in the response which degrades the phase margin. in unity gain, 300pf capacitive load is to be optimal for the utc opa2336 . increasing gain enhances the amplifier?s ability to drive loads beyond this level. in order to improve capability of driving capaci tive load in the unity-gain configuration, a 50 ? to 100 ? resistor is expected to locate inside the feedback loop, as shown in figure 2 . this reduces ringing with large capacitive loads while maintaining dc accuracy.
opa2336 preliminary cmos ic unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r502-392.a ? application information (cont.) + - opa2336 v in v out 100 r s r l c l figure 2. series resistor in unity-gain configuration improves capacitive load drive the resistor can be also located in series with the output outside of the feedback loop, if paralleling a resistive load to the capacitive load, a voltage divider is generated wi th it. this introduces a direct current (dc) error at the output, however, this error may be insignificant. for instance, with r l = 100k ? and r s = 100 ? , there is only about a 0.1% error at the output. utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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