MF4A-100

MF4A-50 TI | Alldatasheet

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TEXAS INSTR (LIN/INTFC) SOE D MM 8961724 0086068 160 MBTIIY TLCO4/MF4A-50, TLC14/MF4A-100 BUTTERWORTH FOURTH-ORDER LOW-PASS SWITCHED-CAPACITOR FILTERS : 102070, NOVEMBER 1986—AEVISED NOVEMBER 1988 © Low Clock-to-Cutoff-Frequency Ratio Error 1D OR P PACKAGE TLCO4/MF4A-50 .. . +0.8% (ror view) TLC14/MF4A-100 . . . £1% cuxin(ft Ue Dricter in © Filter Cutoff Frequency Dependent Only on cur? 7 Vee + External-Clock Frequency Stability tsQ3 6 [JAGND Vec- (js __ 5 FILTER OUT © Minimum Filter Response Deviation Due to External Component Variations Over Time and Temperature Tr 64-05 © Cutoff Frequency Range from 0.1 Hz to 30 kHz, Vec+ = +2.5V @ 5-V to 12-V Operation © Self Clocking or TTL-Compatible and CMOS- Compatible Clock Inputs © Low Supply Voltage Sensitivity © Designed to be Interchangeable with National MF4-50 and MF4-100 description . ‘The TLCO4/MF4A-50 and TLC14/MF4A-100 are monolithic Butterworth low-pass switched-capacitor filters. Each is designed as a low-cost, easy-to-use device providing accurate fourth-order low-pass filter functions in circuit design configurations. Each filter features cutoff frequency stability that is dependent only on the external-clock frequency stability. The cutoff frequency is clock tunable and has a clock-to-cutoff frequency ratio of 50:1 with less than +0.8% error for the TLCO4/MF4A-50 and a clock-to-cutoff frequency ratio of 100:1 with less than +1% — error for the TLC14/MF4A-100. The input clock features self-clocking or TTL- or CMOS-compatible options in conjunction with the level shift (LS) pin. The TLCO4M/MF4A-50M and TLC14M/MF4A-100M are characterized over the full military temperature range of — 56°C to 125°C, The TLCO4I/MF4A-50I and TLC141/MF4A-1001 are characterized for operation from - 40°C to 85°C. The TLCO4C/MF4A-50C and TLC14C/MF4A-100C are characterized for operation from 0°C to 70°C. functional block diagram Vec+ a LEVEL Aa) gh sitet CLKR. cc) NONOVERLAPPING CLOCK GENERATOR Py river n= BUTTERWORTH | (5) (6) FOURTH-ORDER FILTER OUT AGND LOW-PASS FILTER (ay Vec- —— . eee! PRODUCTION DATA documents contain intormation Copyright © 1986, Texas Instruments Incorporated rat gt een, rane cert Te St) Sderd warrenty. Production procesing doce oat XAS, feeceary cogs fosog ofl perenne INSTRUMENTS POST OFFICE BOX 655303 - DALLAS, TEXAS 75268 a3

TEXAS INSTR (LIN/INTFC) 50E D MM 8961724 0086069 OT? MBTII4 TLCO4/MF4A-50, TLC14/MF4A-100 BUTTERWORTH FOURTH-ORDER LOW-PASS 7- 69-O5- SWITCHED-CAPACITOR FILTERS scent SS AVAILABLE OPTIONS: A (CLOCK-TO-CUTOFF FREQUENCY RATIO . orc 60:1 TLCO4CD/MF4A-50CD | TLCO4CP/MF4A-50CP to 70°C 100:1 TLCI4CD/MF4A-100CD| TLC14CP/MF4A-100CP_ =40°C 60:1 ‘TLCO4ID/MF4A-5010 TLCO4IP/MF4A-SOIP_ ‘0 { 85°C 100:1 TLC141D/MF4A-1001D_ TLC141P/MF4A-1001P - 56°C 60:1 TLCO4MP/MF4A-SOMP to 126°C 100:1 TLC14MP/MF4A-100MP_ TLCO4CDR/MF4A-50CDR)}. pin description . je et ‘Analog Ground — The noninverting input to the operational amplifiers of the Butterworth fourth-order low- pass filter. Clock In — The clock input terminal for CMOS-compatible clock or self-clocking options. For either option, the Level Shift (LS) terminal is at Vcc — . For self-clocking, 8 resistor is connected between the CLKIN and CLKR terminal pins and @ capacitor is connected from the CLKIN terminal pin to ground. ‘CLKR 2 Clock R — The clock input for a TTL-compatible clock. For a TTL clock, the level shift pin is connected to mid-supply and the CLKIN pin may be left open, but it is recommended that it be connected to either Voc + oF Voc-- J ruren iN 8 [i | Fitter input eee [ALTER OUTS | | Butterworth fourth-order low-pass Fikter Output SSS us 3 Level Shift — This terminal accommodates the various input clocking options. For CMOS-compatible clocks: ‘oF self-clocking, the level-shift terminal is at Vcc — and for TTL-compatible clocks, the level-shift terminal is at mid-supply. [Vecs 7 | 1 | Positive supply voltage ternal ———SSCSCSCCSCCSY L vec 4 Tt [Negative supply voltage terminal en TEXAS bd INSTRUMENTS os 0st OFFICE 60x 688903 - OALLAS. TEXAS 75288

TEXAS INSTR (LIN/INTFE) SOE D M@™@ 8961724 0086070 419 MBTII4 TLCO4/MF4A-50, TLC14/MF4A-100 BUTTERWORTH FOURTH-ORDER LOW-PASS SWITCHED-CAPACITOR FILTERS a 7 YO absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Operating free-air temperature range: TLCO4M/MF4A-50M, TLC14M/MF4A-100M -55°C to 125°C NOTE 1: All voltage values are with respect to the AGND terminal. recommended operating conditions ee [rai MAX [yA | [Voc Positive supply voltege 2 we TV [Voc— _Newative supply voltage dB [226 TV [Vin _Highevel input voltage | [Vy Low-level input votage TT TV felock Glock frequency (see Note 2) [ccs = ans [tact fs sa | [Voce = 25v | 6 ext [5 axt08 | [tee Cutoff trequency eo Now | tA | 005 zoxt08 |e _| TLCO4M/MF4A-50M, TLC14M/MF4A- 100M} - TLCO4/MF4A-501, TLCO4C/MF4A-50C, TLC14C/MF4A-100C NOTES: 2. Above 250 kHz, the input clock duty cycle should be 50% to allow the operational amplifiers the maximum time to settle while processing analog samples. 3. The cutoff frequency is defined as the frequency where the response is 3.01 dB less than the dc gain of the fitter. TEXAS 4% INSTRUMENTS POST OFFICE 80x 688903 - DALLAS, TEXAS 78268 os

TEXAS INSTR (LIN/INTFC) SOE D MM@ 8961724 O08b071 755 MMTII4 TLCO4/MF4A-50, TLC14/MF4A-100 B ° BUTTERWORTH FOURTH-ORDER LOW-PASS 7-67-05 SWITCHED-CAPACITOR FILTERS eee electrical characteristics over recommended operating free-air temperature range, VCC + = 2.5 V, Vec- = -2.5 V, folock < 250 kHz (unless otherwise noted) filter section ret [__Ticosmmraa-so | TLc14/ar4Aa-100 _| [Woo Output voltage offset go [Vom | ee Vom Peek ouout votapee ea eFC te tare owmncinen FEL Sees [s+ — [ice Supply current tetock = 260kHe [2 226 [1.2 2.26 [ ma | NOTE 4: Igg (source current) is measured by forcing the output to its maximum positive voltage and then shorting the output to the negative supply (Vcc —) terminal. Ig (sink current) is measured by forcing the output to its maximum negative voltage end then shorting the output to the positive supply (Voc +) terminal. operating characteristics over recommended operating free-air temperature range, VCC + = 2.5 V, Vcc-— = —2.5 V (unless otherwise noted) [__Tecosmranso | Tict4iran-100 | [Min Tye? MAX| MIN TyPT MAX | [Maximum clock frequency. imax | SeeNowe2 Sid SS] SCY ie | Temperature coafficiont of te «HO re Too = 8 Whe, r= a feo ou Liteon | too = 25K [teu | [Dynamic renge (see Note 6) |Ta=26eC To |Stop-band frequency fate erm = [x [| [DC voltage empitication | feiogy = 260 He, AS Z2MO [0.16 0 O16|-015 0 016] aB | Paak-to-peak clock e fewmomnoeme tee T ss All typical values are at Ta = 25°C. NOTES: 2. Above 250 kHz, the input clock duty cycle should be 50% to allow the operational amptifiers the maximum time to settle while processing analog samples. 5. The frequency responses at f are referenced to 8 dc gain of 0 48. 6. The dynamic range is referenced to 1.06 V rms (1.5 V peak) where the wideband noise over a 30-kHz bandwidth is typically 106 V rms for the TLCO4/MF4A-50 and 135 «V rms for the TLC14/MF4A-100. SR TEXAS 4 INSTRUMENTS

86 POST OFFICE BOX 655303 - DALLAS, TEXAS 75265

T EXAS INSTR (LIN/INTFC) SOE D M@M™ 8961724 0086072 691 MTIIV TLCO4/MF4A-50, TLC14/MF4A-100 BUTTERWORTH FOURTH-ORDER LOW-PASS SWITCHED-CAPACITOR FILTERS el electrical characteristics over recommended operating free-air temperature range, VCC + = 5 V, Vec- = -5V. felock < 250 kHz, (unless otherwise noted) filter section 7 -CY-O. S- TucoamMrsa-co | TuCta/mran-100_| [rannnern [rst coronene aera mar | [Woo Output valage offers CP 200 [vous | 3743 fave 4s it woo Rn ten [sis a1 . Ta = 25°C, a | ee [Kava Supply voitage eonstivity oo Figureetonam | 90] 80 NOTE 4: 195 {source current) is measured by forcing the output to its maximum positive voltage and then shorting the output to the negative supply (Vcc —) terminal. log (sink current) is measured by forcing the output to its maximum negative voltage and then shorting the output to the positive supply {Vcc +) terminal. clocking section : [voor = 10v. vec =0 | 61 7 89 Vr Postve-going input tweshold vokage | [Veo = sv, vec =0 | 3135 44] © - [veces = 10V, vec-=0 | 13 3 38 Vr Negsvegoing input teohol votage}CLXIN| Yer gv,vec= = 0 | 06 5 10| Nova, Hysteresis V+ VT-) [Veos = Sv. Vecs=0 [422 38] © te | Vou Hiohtevel output vole fo = =t0" [as | Lf YoL_tewte! out voe Hea Ho = 1008 —7 | weritaoncaree fu HES Trg aove [2 * [Vcc = 10 V|CLRR and CORN shorted to Veo -

3 CLKR and CLKIN [37 |

nut curent [Voc = 5 v [shorted to Voc TAM typical values are at Ta = 25°C. Vee = Vec+ - Vec-- a TEXAS 4 INSTRUMENTS POST OFFICE BOX 655303 - DALLAS. TEXAS 75265 a7

TEXAS INSTR (LIN/INTFC) SOE D M@™@ 8961724 0086073 S28 MMTIIY TLCO4/MF4A-50, TLC14/MF4A-100 7-67-05 BUTTERWORTH FOURTH-ORDER LOW-PASS SWITCHED-CAPACITOR FILTERS SD operating characteristics over recommended operating free-air temperature range, VCC + = 5 V, Vcc- = -5 V (unless otherwise noted) |__tucoamraa.so [| TLct4/MF4A-100 | PARAMETER [__resreowomons Gah ea aa] OT | Maximum clock frequency, fmax (see Note 2) felock < 250kH2, Ta = 25°C [49.58 49.98 60.38 99 100 101 | felock’feo) | Temperature coefficient of [omtiosmesemereyo ma stoue [sts [ats [oom folk = 250 kHz, Frequeney response above and bolon| Ta = 25°C | t= 484i | 17-14-10] | folk = 250 kHz, taaseo [te 226m | 17-161 13 [Dynamic range woeNowe 7) [Ta=25eC CT OCTSCSCSdYC | |Stop-bend frequency attentuation at 2 foo [DC voltage amplification | feiocx = 280K, ASS 2K |-0.15 0 015|-016 0 018] @@ | Peak-to-peak clock 3 All typical values are at Ta = 25°C. NOTES: 2, Above 250 kHz, the input clock duty cycle should be 50% to allow the operational amplifiers the maximum time to settle while processing analog samples. 5. The frequency responses at f are referenced to a de gain of O dB. 7. The dynamic range is referenced to 2.82 V rms (4 V peak) where the widebond noise over @ 30-kH bandwidth is typically 142 wV rms for the TLCO4/MF4A-50 and 178 ,V rms for the TLC14/MF4A-100. ee TEXAS 4 INSTRUMENTS 6s POST OFFICE BOX 655303 + DALLAS, TEXAS 75265

1 Low-pass Fitter | OUT |

FIGURE 3. CMOS-CLOCK-DRIVEN, DUAL-SUPPLY OPERATION FIGURE 4. TTL-CLOCK-DRIVEN, DUAL-SUPPLY OPERATION

1 LOW-PASS FILTER OUT |

FIGURE 5. SELF-CLOCKING THROUGH SCHMITT-TRIGGER OSCILLATOR, DUAL-SUPPLY OPERATION

B. The Filter input signal should be dc-biased to mid-supply or ac-coupled to the terminal. C. The AGND terminal must be biased to mid-supply. FIGURE 6. EXTERNAL-CLOCK-DRIVEN SINGLE-SUPPLY OPERATION

NOTE A: The AGND terminal must be biased to mid-supply. FIGURE 7. SELF-CLOCKING THROUGH SCHMITT-TRIGGER OSCILLATOR, SINGLE-SUPPLY OPERATION

FIGURE 8. DC OFFSET ADJUSTMENT