LC7991 SANYO | Alldatasheet
Document overview
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Technical content
Features
- Wide 200 to 2500Hz operating frequency range (FGI input) + Low-impedance phase and frequency control outputs + Speed lock indicator output directly drives an external LED. + TTL-compatible motor frequency sensor and run/stop control inputs - CMOS process - Single 5V supply Pin Assignment voo PO FO BREV FGO FoI LOCK ROT fe] [rs] [re] fr] fe] [3] 07991 (Top View) LTE LI ee [2] Vss xl xO DIV] Div2 DIV3 PRS1 PRS2 Package Dimensions 3006B-D16iC (unit: mm ) 6 $ oonooon anal | . iS Soorocog tt — 19.2 3 ey eI WT oa Te SANYO: DIP16 SANYO Electric Co.,Ltd. Semiconductor Business Headquarters . TOKYO OFFICE Tokyo Bidg.,1-10,1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 2060YT/1309TA,TS (US) No.2918-1/7
Absolute Maximum Ratings at Ta= 25°C, Voc=0V unit Maximum Supply Voltage Vpp max —0.3 to +7.0 v Input Voltage Vin —0.3 to Vpp + 0.3 Vv Output Voltage Vout —0.3 to Vpp + 0.3 Vv Output Current lout +20 mA Allowable Power Dissipation Pdmax Ta=—30to +75°C 300 mW Operating Temperature Topr -30to+75 °C Storage Temperature Tstg —55 to +125 °C Allowable Operating Conditions at Ta= — 30 to + 75°C, Vss=0V min typ max unit Supply Voltage Vpp 4.5 5 55 v Input Voltage Vin 0 Vpp v Output Voltage Vout 0 Vpp Vv Electrical Characteristics at Ta= 25°C, Vpp=5V + 10%, Vgs=0V min typ max unit Input ‘H’-Level Voltage Viz py to 3,PRS1,PRS2,ROT,FGI inputs] 0.7Vpp Vpp =V Input ‘L’-Level Voltage Vin 0 0.3Vpp v Input ‘H’-Level Current Iqy pw to 3,PRS1,PRS2 inputs ] 1 pA Input ‘L’-Level Current =I, -1 pA Input ‘H’-Level Current = [rq [ROTFar inputs (pull-up 10kQ) ] 1 pA Input ‘L’-Level Current =I, —500 pA Output ‘H’-Level Current Ioy [EOCK.BREV, Vou=Vpp-0.4V -2 mA Output ‘L’-Level Current In, {FGO outputs VoL=0.4V 2 mA Maximum Non-Linearity — '0,PO outputs,output open’ +1 +3 LSB (DA Converter) ~2 -6 LSB Output Resistance Ro =‘ FO,PO outputs,RL=10kQ 1000 Q Current Dissipation Ipp 20 mA AC Characteristics at Ta = 25°C, Vpp=5V + 10%, Vsg=0V min typ max unit Input Frequency fxr XI input 0.1 10.5 MHz frg FGI input 50 kHz FG Lock Frequency fpgLook: FGlinput,FG divider off 200 2500 Hz frgLook FGlinput,FG divider on 400 5000 Hz Pin Descriptions [1 | Vas | Ground (OV) [= | 2 [x | Crystal oscillator OSC circuit | 3 | xo | DIV1 Variable frequency divider ratio select Input [ 5 | Diva __| (PGdivider on/off) ("sows PRS1 Phase comparison range select |_ 8 | PRse | 9 | ROT [Rotate/haltcontrol H:halt L: rotate Pull-up - Schmitt input 10 LOCK Lock output. LOW during Lock. Can directly drive an | Output external LED. Motor sensor FG input Pull-up - Schmitt input | 12 | FGO | FGshaped output Output [13 | BREV [Brake timing output, LOW during braking. [ 14 [Fo | Frequency control output, buffered by internal op-amp | DAC output | 15 [| PO | Phase control output, buffered by internal op-amp Positive power supply (6V) [= No.2918-2/7
L¢7991 Pin Internal Circuits Input Pull-up Schmitt-trigger input | Output (complementary) Yoo Noo i £3 10kQ 48 Crystal oscillator DAC output Ri IMQ ‘ | x! xO re mo Block Diagram oan x! XO DIV DIV2 DIV3 Reference signa! : generar sider |_— Reference clock Buffer Frequency control RPM udder gp control psi [_sbitoac | — [>—0 po |Phase control Buffer (PLL servo) | ~— Reference | phase signal Control pulse generator y Bypass FoI & : roo PRS1 PRS2 ROT BREV No.2918-3/7
- Reference Signal Generation .
Table 1. Divider Control and the MURATA CSA8.20MT for 2000Hz operation. Table 2. Clock Frequency and Lock Frequency Division FG Clock Frequency (MHz) .
motor is within the lock range. and PO both go LOW to break the motor. Table 3. Servo Action
1 A step output)
Hlevel f ---7 7077 m7 nrmrreery .
- Rotate Control & Brake Timing Output
ROT and BREV timing is shown below in Fig.5. ranges have a hysteresis region beyond the normal 2n phase comparison region, as shown in Fig.6. Table 4. Phase Range Selection
2n range : : ! : ' 1 . H : 4 Qn 7 o + +3. +5. +7 ae - —3n =x * a a " Phase difference yj" fe noe ' ' : 1 — i 1 7 ' H ‘ H A , ' H ‘ 6x — In _ ~3r —z 0 +n bn +50 +7. Phase difference ——+—/# “pe “Sr te ee t ' ' . ‘ 1 1 14m range : ' : ‘ : : ' 1 Ade 1 — Fig.6 Phase Comparison Ranges Sample Application Circuit Sensor M)O +5v / FG shaped y esr \\ Lock indicator +5V0 WZ Rotate/stop switch [i6] [ra] [ii] fs]_ 3 Voo PO FO BREV FGO FGI LOCK ROT Aa T Lo7991 T ‘Pgs GGT MH; ovo et t5v No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. MI Anyone purchasing any products desoribed or contained herein for an above-mentioned use shall: © Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: ® Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO, LTD, its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally, . Mi Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guarant- eed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. No.2918-7/7