DUAL AUTO-ZEROED OPERATIONAL AMPLIFIERS TC913A TC913B GENERAL DESCRIPTION FEATURES ORDERING INFORMATION

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1 DUL UTO-ZEROED FETURES First Monolithic Dual uto-zeroed Operational mplifier Chopper mplifier Performance Without External Capacitors V OS... µv Max V OS Drift....µV/ C Max Saves Cost/ssembly of Four "Chopper" Capacitors SOIC Packages vailable High DC Gain... d Low Supply Current... 6µ Low Input Voltage Noise (.Hz to Hz)....6µV P-P Wide Common-Mode Voltage Range... V SS to V DD V High Common-Mode Rejection... 6d Dual or Single Supply Operation... ±3.3V to ±8.3V 6.V to 6V Excellent C Operating Characteristics Slew Rate....V/µsec Unity-Gain andwidth...mhz Pin Compatible With LM38, OP-4, MC48, ICL76, TL8, TLC3 ORDERING INFORMTION Maximum Temp. Offset Part No. Package Range Voltage CO 8-Pin SOIC C to 7 C µv CP 8-Pin Plastic DIP C to 7 C µv CO 8-Pin SOIC C to 7 C 3µV CP 8-Pin Plastic DIP C to 7 C 3µV GENERL DESCRIPTION The TC93 is the world's first complete monolithic, dual auto-zeroed operational amplifier. The TC93 sets a new standard for low-power, precision dual-operational amplifiers. Chopper-stabilized or auto-zeroed amplifiers offer low offset voltage errors by periodically sampling offset error, and storing correction voltages on capacitors. Previous single amplifier designs required two user-supplied, external.µf error storage correction capacitors much too large for on-chip integration. The unique TC93 architecture requires smaller capacitors, making on-chip integration possible. Microvolt offset levels are achieved and external capacitors are not required. The TC93 system benefits are apparent when contrasted with a TC76 chopper amplifier circuit implementation. single TC93 replaces two TC76's and four capacitors. Five components and assembly steps are eliminated. The TC93 pinout matches many popular dualoperational amplifiers: OP-4, TLC3, LM38, and ICL76 are typical examples. In many applications, operating from dual V power supplies or single supplies, the TC93 offers superior electrical performance, and can be a functional drop-in replacement; printed circuit board rework is not necessary. The TC93's low offset voltage error eliminates offset voltage trim potentiometers often needed with bipolar and low-accuracy CMOS operational amplifiers. The TC93 takes full advantage of TelCom's proprietary CMOS technology. Unity gain bandwidth is.mhz and slew rate is.v/µsec. FUNCTIONL LOCK DIGRM VSS V DD 4 8 PIN CONFIGURTION (SOIC and DIP) V OS CORRECTION MPLIFIER * INTERNL OSCILLTOR (f OSC Hz) OUT IN IN V SS V DD OUT 7 OUT 6 IN IN IN IN 3 V SS V DD OUT IN IN 6 3 MIN MPLIFIER * LOW IMPEDNCE OUTPUT UFFER TC93 7 OUTPUT OUTPUT OF MPLIFIERS SHOWN CP CP CO CO *NOTE: Internal capacitors. No external capacitors required. /-8 9/3/96 TelCom Semiconductor reserves the right to make changes in the circuitry and specifications of its devices.

2 SOLUTE MXIMUM RTINGS* Total Supply Voltage (V DD to V SS )... 8V Input Voltage... (V DD.3V) to (V SS.3V) Current into ny Pin...m While Operating... µ Storage Temperature Range... 6 C to C Lead Temperature (Soldering, sec)... 3 C Operating Temperature Range C Device... C to 7 C Package Power Dissipation (T 7 C) Plastic SOIC...47mW Plastic DIP...73mW *Static-sensitive device. Unused devices should be stored in conductive material. Stresses above those listed under bsolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. ELECTRICL CHRCTERISTICS:, T = C, unless otherwise indicated. Symbol Parameter Test Conditions Min Typ Max Min Typ Max Unit V OS Input Offset Voltage T = C 3 µv TCV OS verage Temperature C T 7 C.... µv/ C Coefficient of Input C T 8 C.... µv/ C Offset Voltage (Note ) I verage Input ias T = C 9 p Current C T 7 C 3 4 n C T 8 C 4 6 n I OS verage Input T = C 4 p Offset Current T = 8 C n e N Input Voltage Noise. to Hz, R S Ω.6.6 µv P-P. to Hz, R S Ω µv P-P CMRR Common-Mode V SS V CM V DD.V 6 d Rejection Ratio CMVR Common-Mode V SS V DD V SS V DD V Voltage Range OL Open-Loop Voltage R L = kω, V O = ±4V d Gain V OUT Output Voltage Swing R L = kω V SS.3 V DD.9 V SS.3 V DD.9 V W Closed-Loop Closed Loop Gain =.. MHz andwidth SR Slew Rate R L = kω, C L = pf.. V/µsec PSRR Power Supply ±3.3V V S ±.V d Rejection Ratio V S Operating Supply Split Supply ± 3.3 ± 8.3 ± 3.3 ± 8.3 V Voltage Range Single Supply V I S Quiescent Supply.6.8. m Current NOTE:. Characterized; not % tested.

3 Theory of Operation Each of the TC93's two op-amps actually consists of two amplifiers. main amplifier is always connected from the input to the output. separate nulling amplifier alternately nulls its own offset and then the offset of the amplifier. Since each amplifier is continuously being nulled, offset voltage drift with time, temperature, and power supply variations is greatly reduced. ll nulling circuitry is internal and the nulling operation is transparent to the user. Offset nulling voltages are stored on two internal capacitors. n internal oscillator and control logic, shared by the TC93's two amplifiers, control the nulling process. Pin Compatibility The TC93 pinout is compatible with OP-4, LM38, MC48, LT3, TLC3, and similar dual op-amps. In many circuits operating from single or ±V supplies, the TC93 is a drop-in replacement offering DC performance rivaling that of the best single op-amps. The TC93's amplifiers include a low-impedance class output buffer. Some previous CMOS chopper amplifiers used a high-impedance output stage which made open-loop gain dependent on load resistance. The TC93's open-loop gain is not dependent on load resistance. Overload Recovery The TC93 recovers quickly from output saturation. Typical recovery time from positive output saturation is msec. Negative output saturation recovery time is typically msec. voiding Latch-Up Junction-isolated CMOS circuits inherently contain a parasitic p-n-p-n transistor circuit. Voltages exceeding the supplies by.3v should not be applied to the device pins. Larger voltages can turn the p-n-p-n device on, causing excessive device power supply current and power dissipation. The TC93's power supplies should be established at the same time or before input signals are applied. If this is not possible, input current should be limited to.m to avoid triggering the p-n-p-n structure. 3

4 TYPICL CHRCTERISTICS SUPPLY CURRENT (µ) Supply Current vs. ± Supply Voltage T = C ± SUPPLY VOLTGE (V) OFFSET VOLTGE (µv) 3 3 Input Offset Voltage vs. Common-Mode Voltage T = C COMMON-MODE VOLTGE (V) CLOSED-LOOP GIN (d) Gain and Phase vs. Frequency 4 T = C 8 PHSE R = kω 3 L 3 GIN k k M M FREQUENCY (Hz) PHSE (deg) Output Voltage Swing vs. Load Resistance Negative Overload Recovery Time Positive Overload Recovery Time ± OUTPUT VOLTGE (V) T = C SWING SWING R L = kω T = C OUTPUT = V/DIV V OUTPUT = V/DIV V. k k k M LOD RESISTNCE (Ω) GIN = HORIZONTL SCLE = msec/div GIN = HORIZONTL SCLE = msec/div 4

5 PCKGE DIMENSIONS 8-Pin Plastic DIP PIN.6 (6.6).4 (6.).4 (.4).3 (.76).4 (.6).348 (8.84).7 (.78).4 (.4).3 (7.87).9 (7.37). (.8).4 (3.6). (3.8). (.9).4 (.). (.). (.38).8 (.) 3 MIN.. (.79).9 (.9). (.6). (.38).4 (.6).3 (7.87) 8-Pin Plastic SOIC PIN indicated by dot and / or beveled edge.7 (3.99). (3.8).44 (6.).8 (.79). (.7) TYP..97 (.).89 (4.8).8 (.46).4 (.36). (.).4 (.).69 (.7).3 (.3) 8 MX.. (.).7 (.8). (.7).6 (.4) Dimensions: inches (mm) Sales Offices TelCom Semiconductor 3 Terra ella venue P.O. ox 767 Mountain View, C TEL: FX: liter@csmtp.telcom-semi.com TelCom Semiconductor ustin Product Center 9 urnet Rd. Suite 4 ustin, TX 7878 TEL: FX: TelCom Semiconductor H.K. Ltd. Sam Chuk Street, Ground Floor San Po Kong, Kowloon Hong Kong TEL: FX: Printed in the U.S..

TC4427 TC A DUAL HIGH-SPEED POWER MOSFET DRIVERS 1.5A DUAL HIGH-SPEED POWER MOSFET DRIVERS TC4426 TC4426 GENERAL DESCRIPTION FEATURES

TC4427 TC A DUAL HIGH-SPEED POWER MOSFET DRIVERS 1.5A DUAL HIGH-SPEED POWER MOSFET DRIVERS TC4426 TC4426 GENERAL DESCRIPTION FEATURES FEATURES High Peak Output Current....A Wide Operating Range....V to V High Capacitive Load Drive Capability... pf in nsec Short Delay Time... < nsec Typ. Consistent Delay Times With Changes in Supply Voltage