TC1029 Linear Building Block – Dual Low Power Op Amp Features General Description • Optimized for Single Supply Operation • Small Packages: 8-Pin MSOP, 8-Pin PDIP and 8-Pin SOIC • Ultra Low Input Bias Current: Less than 100pA • Low Quiescent Current: 12µA (Typ.) • Rail-to-Rail Inputs and Outputs • Operates Down to 1.8V The TC1029 is a dual, CMOS operational amplifier designed for low-power applications. It is designed specifically for operation from a single supply, however, operation from dual supplies is also possible, and the power supply current drain is independent of the magnitude of the power supply voltage. The TC1029 operates from two 1.5V alkaline cells down to VDD = 1.8V. Supply current is only typically 12µA, which significantly extends battery life. Applications Rail-to-rail inputs and outputs allow operation from low supply voltages while accommodating large input signals, yielding larger output signals. • Power Management Circuits • Battery Operated Equipment • Consumer Products Packaged in an 8-Pin MSOP, SOIC or DIP, the TC1029 is ideal for battery operated applications. Device Selection Table Package OUTA TC1029EPA 8-Pin PDIP -40°C to +85°C TC1029EUA 8-Pin MSOP -40°C to +85°C TC1029EOA 8-Pin SOIC -40°C to +85°C TC1029 1 A 8 VDD B 2 7 – – + IN1- + Part Number Functional Block Diagram Temperature Range OUTB Package Types IN1+ 8-Pin PDIP 8-Pin MSOP 8-Pin SOIC VSS OUTA 1 8 VDD IN1- 2 7 OUTB IN1+ 3 6 IN2- VSS 4 5 IN2+ TC1029EPA TC1029EUA TC1029EOA 2002 Microchip Technology Inc. 3 6 4 5 IN2- IN2+ DS21340B-page 1 TC1029 1.0 ELECTRICAL CHARACTERISTICS *Stresses above those listed under "Absolute 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 operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. ABSOLUTE MAXIMUM RATINGS* Supply Voltage ......................................................6.0V Voltage on Any Pin .......... (V SS – 0.5V) to (VDD + 0.5V) Junction Temperature....................................... +150°C Operating Temperature Range............. -40°C to +85°C Storage Temperature Range .............. -55°C to +150°C TC1029 ELECTRICAL SPECIFICATIONS Electrical Characteristics: Typical values apply at 25°C and VDD = 3.0V; TA = -40° to +85°C, and VDD = 1.8V to 5.5V, unless otherwise specified. Symbol Parameter Min Typ Max Units VDD Supply Voltage 1.8 — 5.5 V IQ Supply Current, Operating — 12 16 µA AVOL Large Signal Voltage Gain — 100 — V/mV VICMR Common Mode Input Voltage Range VSS - 0.2 — VDD + 0.2 V VOS Input Offset Voltage ±100 ±0.3 ±500 ±1.5 µV mV IB Input Bias Current -100 50 100 pA VOS(DRIFT) Input Offset Voltage Drift — ±4 — µV/°C GBWP Gain Bandwidth Product — 90 — kHz SR Slew Rate — 35 — mV/µsec Test Conditions All Outputs Open RL = 10kΩ, VDD = 5V VDD = 3V, VCM = 1.5V, TA = 25°C, TA = -40°C to 85°C TA = 25°C; VCM = VDD to VSS VDD = 3V; VCM = 1.5V VDD = 1.8V to 5.5V; VO = VDD to VSS CL = 100pF; RL = 1M to GND, Gain = 1 VIN = VSS to VDD VOUT Output Signal Swing VSS + 0.05 — VDD – 0.05 V RL = 10kΩ CMRR Common Mode Rejection Ratio 70 — — dB TA = 25°C; VDD = 5V; VCM = VDD to VSS PSRR Power Supply Rejection Ratio 80 — — dB TA = 25°C; VCM = VSS; VDD = 1.8V to 5V ISRC Output Source Current 3 — — mA VIN = VDD Output Shorted to VSS VDD = 1.8V; Gain = 1 ISINK Output Sink Current 4 — — mA VIN = VSS, Output Shorted to VDD VDD = 1.8V; Gain = 1 En Input Noise Voltage — 10 — µVpp en Input Noise Voltage Density — 125 — nV/√HZ DS21340B-page 2 0.1Hz to 10Hz 1kHz 2002 Microchip Technology Inc. TC1029 2.0 PIN DESCRIPTION The description of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE Pin No. (8-Pin PDIP) (8-Pin MSOP) (8-Pin SOIC) Symbol 1 OUTA Description Op amp output. 2 IN1- 3 IN1+ Non-inverting op amp input. 4 VSS Negative power supply. 5 IN2+ Non-inverting op amp input. 6 IN2- Inverting op amp input. 7 OUTB 8 VDD 2002 Microchip Technology Inc. Inverting op amp input. Op amp output. Positive power supply. DS21340B-page 3 TC1029 3.0 DETAILED DESCRIPTION The TC1029 is one of a series of very low power, linear building block products for low voltage single supply operations. The TC1029 contains two rail to rail op amps which operate down to 1.8V with a maximum supply current of 16µA. The amplifier's input range extends beyond both supplies by 200mV and the outputs will swing to within several millivolts of the supplies, depending on the load current being driven. The amplifier design is such that large signal gain, slew rate and bandwidth are largely independent of supply voltage. The low input bias current and offset voltage of the TC1029 make it suitable for precision applications. 4.0 TYPICAL APPLICATIONS The TC1029 lends itself to a wide variety of applications, particularly in battery powered systems. It typically finds application in power management, processor supervisory and interface circuitry. 4.1 Voice Band Receive Filter The majority of spectral energy for human voices is found to be in a 2.7kHz frequency band from 300Hz to 3kHz. To properly recover a voice signal in applications such as radios, cellular phones and voice pagers, a low power bandpass filter matched to the human voice spectrum can be implemented, using Microchip’s CMOS op amps. Figure 4-1 shows a unity gain multipole Butterworth filter with ripple less than 0.15dB in the human voice band. The lower 3 dB cut-off frequency is 70Hz (single order response), while the upper cut-off frequency is 3.5kHz (fourth order response). 4.2 Supervisory Audio Tone (SAT) Filter for Cellular Supervisory Audio Tones (SAT) provide a reliable transmission path between cellular subscriber units and base stations. The SAT tone functions much like the current/voltage used in land line telephone systems to indicate that a phone is off the hook. The SAT tone may be one of three frequencies: 5970, 6000 or 6030Hz. A loss of SAT implies that channel conditions are impaired and if SAT is interrupted for more than 5 seconds a cellular call is terminated. Figure 4-2 shows high Q (30) second order SAT detection bandpass filter using Microchip’s CMOS op amp architecture. This circuit nulls all frequencies except the three SAT tones of interest. DS21340B-page 4 2002 Microchip Technology Inc. TC1029 FIGURE 4-1: MULTI-POLE BUTTERWORTH VOICE BAND RECEIVE FILTER VDD /2 Gain = 0dB VOUT Fch = 3.5kHz -24dB/Octave 0.1µF Op Amp + 22.6k – Fcl = 70Hz +6dB/Octave 22.6k Passband Ripple < 0.15dB 750pF 6800pF TC1029 VIN VDD 21.0k 21.0k 21.0k Op Amp + 470pF 2400pF FIGURE 4-2: – SECOND ORDER SAT BANDPASS FILTER Gain = 0dB Q = 30 .036µF 1/2 Q = FC BW (3dB) 48.7k FC = 6kHz VDD VIN 24.3k VOUT .036µF – TC1029 + 11.2 VDD/2 VDD/2 2002 Microchip Technology Inc. DS21340B-page 5 TC1029 5.0 TYPICAL CHARACTERISTICS Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. Op Amp Supply Voltage vs. Supply Current Op Amp Supply Current vs. Temperature Op Amp Power Supply Rejection Ratio (PSRR) vs. Frequency 16 16 0 V V 14 12 10 IN = 14 PP -20 5.5V 12 1.8V PSRR (dB) SUPPLY CURRENT (µA) SUPPLY CURRENT (µ (µA) -10 -30 -40 -50 3V 10 -60 8 -40°C 5 0 1 2 3 4 5 6 -70 25°C 85°C 100 1K TEMPERATURE (°C) SUPPLY VOLTAGE (V) Op Amp DC Open-Loop Gain vs. Supply Voltage Op Amp DC Open-Loop Gain vs. Temperature 100K Op Amp Short-Circuit Current vs. Supply Voltage 50 3000 140 10K FREQUENCY (Hz) 100 2000 80 1500 60 1000 500 20 1.0 2.0 3.0 4.0 5.0 6.0 SUPPLY VOLTAGE (V) Op Amp Short-Circuit Current vs. Supply Voltage 25°C TEMPERATURE (°C) 1000 10% Overshoot -5 -10 RLOAD (kΩ) ISRC-B -15 ISRC-A -20 = 1.5V Region of Stable Operation 10 -25 V V Region of Marginal Stability 100 -30 -35 0.0 1 1.0 2.0 3.0 4.0 5.0 SUPPLY VOLTAGE (V) DS21340B-page 6 6.0 0 30 ISINK 25 20 15 10 0 0.0 85°C Op Amp Load Resistance vs. Load Capacitance 0 40 35 5 0 -40°C 250 500 750 1000 12501500 1750 2000 INPUT VOLTAGE (mV) 40 0 0.0 OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) 2500 OUTPUT VOLTAGE (mV) DC OPEN-LOOP GAIN (dB) 45 120 1.0 2.0 3.0 4.0 5.0 SUPPLY VOLTAGE (V) 6.0 Op Amp Small-Signal Transient Response 100 50 0 100 50 0 10 20 30 40 50 60 70 80 90 TIME (µsec) 2002 Microchip Technology Inc. TC1029 INPUT VOLTAGE (mV) 5.0 TYPICAL CHARACTERISTICS (CONTINUED) Op Amp Large-Signal Transient Response 6 4 2 0 6 4 2 0 10 20 30 40 50 60 70 80 90 TIME (µsec) 2002 Microchip Technology Inc. DS21340B-page 7 TC1029 6.0 PACKAGING INFORMATION 6.1 Package Marking Information Package marking data not available at this time. 6.2 Taping Form Component Taping Orientation for 8-Pin MSOP Devices User Direction of Feed PIN 1 W P Standard Reel Component Orientation for TR Suffix Device Carrier Tape, Number of Components Per Reel and Reel Size Package 8-Pin MSOP Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size 12 mm 8 mm 2500 13 in Component Taping Orientation for 8-Pin SOIC (Narrow) Devices User Direction of Feed PIN 1 W P Standard Reel Component Orientation for TR Suffix Device Carrier Tape, Number of Components Per Reel and Reel Size Package 8-Pin SOIC (N) DS21340B-page 8 Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size 12 mm 8 mm 2500 13 in 2002 Microchip Technology Inc. TC1029 6.3 Package Dimensions 8-Pin Plastic DIP PIN 1 .260 (6.60) .240 (6.10) .045 (1.14) .030 (0.76) .070 (1.78) .040 (1.02) .310 (7.87) .290 (7.37) .400 (10.16) .348 (8.84) .200 (5.08) .140 (3.56) .040 (1.02) .020 (0.51) .150 (3.81) .115 (2.92) .110 (2.79) .090 (2.29) .015 (0.38) .008 (0.20) 3° MIN. .400 (10.16) .310 (7.87) .022 (0.56) .015 (0.38) Dimensions: inches (mm) 8-Pin MSOP PIN 1 .122 (3.10) .114 (2.90) .197 (5.00) .189 (4.80) .026 (0.65) TYP. .122 (3.10) .114 (2.90) .043 (1.10) MAX. .016 (0.40) .010 (0.25) .006 (0.15) .002 (0.05) .008 (0.20) .005 (0.13) 6° MAX. .028 (0.70) .016 (0.40) Dimensions: inches (mm) 2002 Microchip Technology Inc. DS21340B-page 9 TC1029 6.3 Package Dimensions (Continued) 8-Pin SOIC PIN 1 .157 (3.99) .150 (3.81) .244 (6.20) .228 (5.79) .050 (1.27) TYP. .197 (5.00) .189 (4.80) .069 (1.75) .053 (1.35) .020 (0.51) .010 (0.25) .013 (0.33) .004 (0.10) .010 (0.25) .007 (0.18) 8° MAX.. .050 (1.27) .016 (0.40) Dimensions: inches (mm) DS21340B-page 10 2002 Microchip Technology Inc. TC1029 Sales and Support Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following: 1. 2. 3. Your local Microchip sales office The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277 The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products. 2002 Microchip Technology Inc. DS21340B-page11 TC1029 NOTES: DS21340B-page12 2002 Microchip Technology Inc. TC1029 Information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. No representation or warranty is given and no liability is assumed by Microchip Technology Incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. Use of Microchip’s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights. 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