LINEAR TECHNOLOGY CORP TECHNOLOGY B7E D MM 5518468 OO0O804S 128 MELTC LTC 1064-2M/883 Low Noise, High Frequency, 8th Order Butterworth Lowpass Filter DESCRIPTION The LTC1064-2/883 is an 8th order, lowpass Butterworth filter, which provides a maximally flat passband. The attenuation slope is -48dB/octave and the maximum attenuation is in excess of 80dB. An external TTL or CMOS clock programs the filter's cutoff frequency. The clock to cutoff frequency ratio is 100:1 (pin 10 at negative supply) or 50:1 (pin 10 at V*). The maximum cutoff frequency is 140kHz. No external components are needed. The LTC 1064-2/883 features low wideband noise and low harmonic distortion even for input voltages up to 3Vays. In fact the LTC1064-2/883 overall performance competes with equivalent multi op amp RC active realizations. The LTC1064-2/883 is fabricated using LTC's enhanced ana- log CMOS Si-gate process. The LTC1046-2/883 is pin compatible with the LTC1064- 1/883. The devices are processed to the requirements on MIL- STD-883 Class B to yield circuits usable in precision military applications. ABSOLUTE MAXIMUM RATINGS Total Supply Voltage (Vt to V7)... ceeeeeeeeeees 16.5V Power Dissipation ...........ccccssscescessseeessestesensees 400mW Operating Temperature Rang.............. -55C to 125C Storage Temperature Range................. -65C to 150C Lead Temperature (Soldering, 10 sec) ................. 300C BURN-IN CIRCUIT 1 VY 14 2 lig 3 12 ve 4} LTc1064-2M/083 | 11 Vo cre 10 6 Lo 2 LB j|L;=~ | v- NOTES: THE POWER SUPPLIES SHOULD BE BYPASSED BY A 0.1pF OR LARGER CAPACITOR CLOSE TO THE PACKAGE. THE CONNECTION BETWEEN PINS 7 AND 14 SHOULD BE MADE UNDER THE I.C. PACKAGE. V* = 7.5V TO B.0V ~=7.5V TO -8.0V CHG = SQUARE WAVE, AMPLITUDE= [|_| | 75VT0 8.0V AND FREQUENCY = 1kHZ +10% wv 1064-2M BI PACKAGE/ORDER INFORMATION ORDER PART TOP VIEW NUMBER noo} 7 4} ouT Cc ; vw FE a an LTC1064-2M4/883 AGND [B| Fa] v- vi 1} texk aenn [5] 0} 50/100 ne [6] ro) Vour ; RwA 2] Fa] nc PART MARKINGS {4-LEAD CERAMIC OIP LTC1064-2MJ/883C ORDER PART NUMBER Nc LTC1064-2ML/883 NC i. fouk 50/100 ATO) | PART MARKINGST NC LTC1064-2ML/883C L PACKAGE 20-PIN LCC 1064-2M LCC t The suffix letter C of the part mark indicates compliance per MIL-STD 883, para 1.2.1.1. LY WW ho responsibility isassumed for its use. Linear Technology Corporation makes no representation that the Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, 1 Interconnection of circuits as described herein will not infringe on existing patent rights. LINEAR TECHNOLOGY CORP LTC 1064-2M/883 B7E D MM 55146468 OOOS04b OLY MELTC TABLE 1: ELECTRICAL CHARACTERISTICS Vg = 47.5, fork = IMHz, Ry = 10kQ, T, = 25C, TTL or CMOS clock input level unless otherwise specified. T, = 25C SUB- ~55C <T,125C SUB- PARAMETER CONDITIONS MIN TYP MAX | GROUP | MIN TYP MAX | GROUP | UNITS Passband Gain Referenced to OdB, 1Hz to 1kHz -0.5 0.15 1 -0.5 0.15 2,3 dB Gain at-3dB Frequency Referenced to OdB, fiy = 20kHz -3,0 -2.75 1 -3.0 -2.75 23 dB Stopband Attenuation At 1.5f_gqp, 50:1, fiy = 60HZ ~24 -27 1 -24 +27 23 dB At 2f_9ag, 100:1, fiy = 40kHz -44 -47 1 -44 -47 23 dB Output Voltage and Operating | Vs = +2.37V +11 4 +14 5,6 V Input Voltage Range Vs = +5V +3.1 4 +31 5,6 V Vg = 7.5 +5.0 4 +5.0 5,6 V Output DC Offset Vs = 47.5 +80 4125 1 mV Input Impedance 10 20 1 kQ Power Supply Current Vs = 2.37V, fork = 1mHz 22 1 22 2.3 mA Vg = +5V, fork = 1mHz 12 23 1 26 23 mA Vg = +8V, fork = 1mHz 16 28 1 32 23 mA Power Supply Voltage Range +2.37V +7.5V 1 +2.37 +75 2,3 V TABLE 2: ELECTRICAL TEST REQUIREMENTS MIL-STD-883 TEST REQUIREMENTS SUBGROUP he Ponies sas 5% based on falures eubaroun 1 ; ; @ is specified as 5% based on failures from group A, subgroup 1, Final Electrical Test Requirements (Method 5004) 1,2,3,4,5,6 tests after cooldown as the final electrical test in accordance with method Group A Test Requirements (Method 5005) 1,2,3,4,5,6 -004 of MIL-STD-883 Class B. The verified failures of group A, subgroup Group C and D End Point Electrical Parameters {* 1, after burn-in divided by the total number of devices submitted for burn- (Method 5005) in in that lot shall be used to determine the percent for the fot. * PDA Applies to subgroup 1. See PDA Test Notes. 2 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7487 (408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977 than those given. Linear Technology Corporation reserves the right to test to tighter limits 1D. No. 66-10-0132 Rev. C 07/07/93 LT/CSS 0793 .5K REV C Ei LINEAR TECHNOLOGY CORPORATION #93