tc1029-3 9/20/99 telcom semiconductor reserves the right to make changes in the circuitry and specifications of its devic es. evaluation kit available tc1029 features n optimized for single-supply operation n small package ...................................... 8-pin msop (occupies only half the area of an 8-pin soic), 8-pin dip, and 8-pin soic n ultra low input bias current ..... less than 100 pa n low quiescent current ....................... 12 m a (typ.) n rail-to-rail inputs and outputs (operates from low supply voltage while accomodating large input signals yields larger output signals) n operates down to 1.8v applications n power management circuits n battery operated equipment n consumer products general description 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 pos- sible, 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 v dd = 1.8v. supply current is only typically 12 m a, which significantly extends battery life. rail-to-rail inputs and outputs allow operation from low supply voltages while accommodating large input signals, yielding larger output signals. packaged in an 8-pin msop, soic, or dip, the tc1029 is ideal for battery-operated applications. linear building block C dual low-power op amp ordering information part no. package temp. range TC1029EPA 8-pin dip C 40 c to +85 c tc1029eua 8-pin msop C 40 c to +85 c tc1029eoa 8-pin soic C 40 c to +85 c tc1043ev evaluation kit for linear building block family pin configuration (dip, msop, and soic) tc1029 v dd out2 in2 in2+ v ss in1+ in1 outa + + a 1 2 3 4 5 6 7 8 b
tc1029 linear building block C dual low-power op amp 2 tc1029-3 9/20/99 * static-sensitive device. unused devices must be stored in conductive material. protect devices from static discharge and static fields. stresses above those listed under absolute maximum ratings may cause perma- nent 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. exposure to absolute maximum rating conditions for extended periods may affect device reliability. absolute maximum ratings* supply voltage ...........................................................6.0v voltage on any pin: (with respect to supplies) ..... (v ss C 0.5v) to (v dd +0.5v) operating temperature range: ............. C 40 c to + 85 c storage temperature range ................ C 55 c to +150 c lead temperature (soldering, 10 sec) ................. +260 c electrical characteristics: typical values apply at 25 c, v dd = 3.0v. t a = C40 c to +85 c, v dd = 1.8v to 5.5v, unless otherwise specified. symbol parameter test conditions min typ max unit v dd supply voltage 1.8 5.5 v i q supply current, operating all outputs open 12 16 m a a vol large signal voltage gain r l = 10 k w , v dd = 5v 100 v/mv v icmr common mode input voltage range v ss C 0.2 v dd +0.2 v v os input offset voltage v dd = 3v, v cm = 1.5v, t a = 25 c, 100 500 m v t a = C40 c to 85 c 0.3 1.5 mv i b input bias current t a = 25 c, v cm = v dd to v ss C100 50 100 pa v os (drift) average input offset voltage drift v dd = 3v, v cm = 1.5v 4 m v/ c gbwp gain-bandwidth product v dd = 1.8v to 5.5v; v o = v dd to v ss 90 khz sr slew rate c l = 100pf r l = 1m to gnd gain = 1 v in = v ss to v dd 35 mv/ m sec v out output signal swing r l = 10 k w ,v ss +v dd Cv 0.05 0.05 cmrr common mode rejection ratio t a = 25 c, v dd = 5v; 70 db v cm = v dd to v ss psrr power supply rejection ratio t a = 25 c, v cm = v ss 80 db v dd = 1.8 to 5v i src output source current v in = v dd 3ma output shorted to v ss v dd = 1.8v, gain = 1 i sink output sink current v in = v ss 4ma output shorted to v dd v dd = 1.8v, gain = 1 en input noise voltage 0.1 hz to 10 hz 10 m vpp input noise density 1khz 125 nv/ ? hz
3 tc1029 linear building block C dual low-power op amp tc1029-3 9/20/99 detailed description the tc1029 is one of a series of very low power, linear building block products for low voltage single supply opera- tions. the tc1029 contains two rail to rail op amps which operate down to 1.8v with a maximum supply current of 16 m a. the amplifier's input range extends beyond both sup- plies by 200 mv 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 volt- age. the low input bias current and offset voltage of the tc1029 make it suitable for precision applications. 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. voice band receive filter the majority of spectral energy for human voices is found to be in a 2.7 khz frequency band from 300 hz to 3 khz. 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 telcoms cmos op amps. figure 1 shows a unity gain multi-pole butterworth filter with ripple less than 0.15 db in the human voice band. the lower 3 db cut-off frequency is 70 hz (single order response) while the upper cut-off frequency is 3.5 khz (fourth order response). supervisory audio tone (sat) filter for cellular supervisory audio tones (sat) provide a reliable trans- mission 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 6030 hz. a loss of sat implies that channel conditions are impaired and if sat is inter- rupted for more than 5 seconds a cellular call is terminated. figure 2 shows high q (30) second order sat detection bandpass filter using telcoms cmos op amp architecture. this circuit nulls all frequencies except the three sat tones of interest. evaluation kit the tc1043ev consists of a four-inch by six-inch pre- wired application circuit board. pre-configured circuits in- clude a pulse width modulator, wake-up timer, function generator, and others. on-board current meter terminals, voltage regulator, and a user-prototyping area speed circuit development. please contact your local telcom semicon- ductor representative for more information. figure 2. second order sat bandpass filter + 11.2 24.3k 48.7k .036 f .036 f v in v dd v out gain = 0db q = f c bw q = 30 (3db) f c = 6 khz 1/2 tc1029 tc1029 v dd /2 v dd /2 + + v out v in 21.0k 21.0k 21.0k 2400 pf 470 pf 750 pf v dd v dd /2 6800 pf 0.1 f 22.6k 22.6k gain = 0 db f ch = 3.5 khz ?4db/octave f cl = 70 hz +6db/octave passband ripple < 0.15db tc1029 op amp tc1029 op amp tc1029 figure 1. multi-pole butterworth voice band receive filter
tc1029 linear building block C dual low-power op amp 4 tc1029-3 9/20/99 typical characteristics curves op-amp supply current vs. temperature op-amp supply voltage vs. supply current supply current ( a) supply voltage (v) supply voltage (v) supply current ( a) temperature ( c) op-amp power supply rejection ratio(psrr) vs. frequency frequency (hz) psrr (db) op-amp short-circuit current vs. supply voltage dc open-loop gain (db) supply voltage (v) output current (ma) op-amp dc open-loop gain vs. temperature temperature ( c) dc open-loop gain (v/mv) op-amp dc open-loop gain vs. supply voltage op-amp load resistance vs. load capacitance capacitive load (pf) r laod (k ) 16 12 10 5 16 14 12 10 8 140 120 100 80 60 40 20 0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 3000 50 45 40 35 30 25 20 15 10 5 0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 2500 2000 1500 1000 500 0 0 ?0 c ?0 c 25 c 25 c 85 c 85 c 12345 6 1k 10k 100 0 ?0 ?0 ?0 ?0 ?0 ?0 ?0 100k v dd = 3v, v cm = 1.5v, v in = 100mvpp 0 250 500 750 1000 1250 1500 1750 2000 100 10 1 1000 v dd = 3v, v cm = 1.5v i sink 10% overshoot region of marginal stability region of stable operation op-amp short-circuit current vs. supply voltage supply voltage (v) output current (ma) 0 ? ?0 ?5 ?0 ?5 ?0 ?5 0.0 1.0 2.0 3.0 4.0 5.0 6.0 i src 1.8v 3v op-amp small-signal transient response time sec output voltage (mv) input voltage (mv) 100 50 0 100 50 0 10 20 30 40 50 60 70 80 90 14 5.5v
5 tc1029 linear building block C dual low-power op amp tc1029-3 9/20/99 package dimensions dimensions: inches (mm) typical characteristics curves 8-pin plastic dip 3?min. pin 1 .260 (6.60) .240 (6.10) .045 (1.14) .030 (0.76) .070 (1.78) .040 (1.02) .400 (10.16) .348 (8.84) .200 (5.08) .140 (3.56) .150 (3.81) .115 (2.92) .110 (2.79) .090 (2.29) .022 (0.56) .015 (0.38) .040 (1.02) .020 (0.51) .015 (0.38) .008 (0.20) .310 (7.87) .290 (7.37) .400 (10.16) .310 (7.87) op-amp large-signal transient response time sec output voltage (v) input voltage (v) 4 6 2 0 4 6 2 0 10 20 30 40 50 60 70 80 90
tc1029 linear building block C dual low-power op amp 6 tc1029-3 9/20/99 sales offices telcom semiconductor, inc. 1300 terra bella avenue p.o. box 7267 mountain view, ca 94039-7267 tel: 650-968-9241 fax: 650-967-1590 e-mail: liter@telcom-semi.com package dimensions (cont.) telcom semiconductor, gmbh lochhamer strasse 13 d-82152 martinsried germany tel: (011) 49 89 895 6500 fax: (011) 49 89 895 6502 2 telcom semiconductor h.k. ltd. 10 sam chuk street, ground floor san po kong, kowloon hong kong tel: (011) 852-2350-7380 fax: (011) 852-2354-9957 .050 (1.27) typ. 8 max. pin 1 indicated by dot and / or beveled edge .244 (6.20) .228 (5.79) .157 (3.99) .150 (3.81) .197 (5.00) .189 (4.80) .018 (0.46) .014 (0.36) .010 (0.25) .004 (0.10) .069 (1.75) .053 (1.35) .010 (0.25) .007 (0.18) .050 (1.27) .016 (0.40) dimensions: inches (mm) 8-pin soic .122 (3.10) .114 (2.90) .122 (3.10) .114 (2.90) .043 (1.10) max. .006 (0.15) .002 (0.05) .016 (0.40) .010 (0.25) .197 (5.00) .187 (4.80) pin 1 .008 (0.20) .005 (0.13) .028 (0.70) .016 (0.40) 6 max. .026 (0.65) typ. 8-pin msop
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