ICM7209 HARRIS | Alldatasheet

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Technical content

GENERAL DESCRIPTION FEATURES ‘The Hartis ICM7209 is a versatile CMOS clock generator * High Frequency Operation — 10MHz Guaranteed capable of driving a number of § volt systems with a variety © Requires Only A Quartz Crystal and Two Capacitors of input requirements. When used to dive up to.5 TTL pin uan ‘cmos Compattitey gates, the typical rise and fall times are 10ns. eee an = SxCTTL F The ICM7209 consists of an oscillator, a buffered output High Output Drive Gapablity — 5% TTL Fanout wit ‘equal to the oscillator frequency and a second buffered out- put having an output frequency one-eighth that of the oscil- ‘* Low Power — SOmW at 10MHz lator. The guaranteed maximum oscillator frequency is © Choice of Two Output Frequencies — Osc., and Osc. 40MHz, Connecting the DISABLE terminal to the negative + 8 Frequencies supply forces the =8 output into the ‘0’ state and the OUT! * Disable Control for Both Outputs tnlo the *1” state. ‘© Wide industrial Temperature Range — 20°C to +85°C

ORDERING INFORMATION

44 Noo osc our [7] [Yes

2 = ovsasce [3] [)+s0ur innana Dope SEL eS 1 To? view osc our e oso-2 Figure 2: Pin 3 =_; court Configuration oisamte © (Outline dwg PA) 0380-1 Pa +s designated by ether a Figure 1: Functional Diagram ot ora notch *Zener Voltage is Typicaly 6:3 Volts Annis SEMCONOUCTOR'S SOLE AND EXCLUSIVE WAARANTY OBLIGATION WITH RESPECT TO THIS PRODUCT SHALL BE THAT STATED IM THE WARRANTY ARTICLE OF THE Soncmon oF gate, Tre Wannayy SHALL OF EXCLUSIVE AND SHALL Be Iv LIEU OF ALL OTMER WARRANTES, EXPRESS, MPLIED OR STATUTORY, INCLUDN THE WPLED WannanTeS OF MERDUANTABILITY AND FITNESS FOR A PARTICUAR USE NOTE: Alt typical values have been characterized but are Not tested. 11-15, .

3 ICM7209

2 ABSOLUTE MAXIMUM RATINGS

NOTE: Stresses above those listed under “Absolute Maximum Ratings" may cause permanent damage tothe device. These are stress ratings only and functional ‘2peraton of the device at these or any other conditions above thase indicated in the operational sections of the specications isnot implied. Exposure to absolute ‘maximum ratig conditons for extended periods may affect device roby.

ELECTRICAL CHARACTERISTICS

(pp —Vss=5V, test circuit, fose= 10MHz, Ta= 25°C unless otherwise specified.) [_symbor_ [Parameter Test Gonaitions [min | typ | max [unit | Supply Current Note 1 mA No Load DisabioinptGapactance | | Ts TT | Vou Output Low State Either OUT 1 or OUT +8 simulated 5X TTL loads v Vox Output High State Either OUT 1 or OUT =8 simulated 5x TTL toads Output Rise Time (Note 3) Either OUT 1 or OUT =8 simulated 5x TTL loads Output Fall Time (Note 3) Either OUT 1 or OUT =8 simulated 5x TTL toads 10 fosc Minimum OSC Frequency for +8 Output Output + 8 duty cycle Any operating frequency 79 Low state : High state Lom | oscitotortransconductanco | | ao | 20 || as | NOTES: 1. Tho power dissipation is a function ofthe oscilater frequency (1st ORDER EFFECT see curve) but i also effected toa small extent by the oscillator tank components. 2. The =8 circuitry uses a dynamic schema. AS with any dynamic system, information of dala is stored on very small nodal capactances instoad of latches (sae systems) and there is a lower cut! requency of operation. Dynamic dividers are used inthe ICM7209 to sigficanty improve high {requency performance and to docrease power consumption 3 Rise and fal ies are defined batwoen the output levels of 0.5 and 2.4 volts +8v CRYSTAL PARAMETERS: come = P*8Y Cua = 50 F 1 = 18 ohms ce = 4000, oe 39F = DISABLE Cy = 10pF [OSC OUT Vpn 0 OUT? Go (0 hite ‘SIMULATED | we | tonne SILER | osc m Ves sour st oF + = I ver ~ = 0350-3 Figure 3: Test Circuit NOTE: At ype vais have bow characte bt ae ot 11-16 c

S TYPICAL PERFORMANCE CHARACTERISTICS (vpp-Vss~=5¥) 2 SUPPLY VOLTAGE RANGEFOR = CORRECT OPERATION OF = 8 ‘SUPPLY CURRENT AS A FUNCTION TYPICAL OUT 1 RISE AND FALL COUNTER AS A FUNCTION OF ‘OF OSCILLATOR FREQUENCY TIMES « OSCILLATOR FREQUENCY. 15) 5 [ewe TT | 1 fey tT AIAN I I ; | i ofemseceord_| | Cy Vee) pL 7 10}Loaps aT f LOADS Es i 5 oureett J] | | t? Ben Tarae 3 —s 1 | tose mal onan g? "ai 52 y aeP 4 - | is ee }>“ourpurs DIsABLED| eI ' tect ron. ect a epee ZnS BE Woks «ws tats 100s ° 7 40 6080 100 WOKH: 100kHz MHz 1OMHZ 100MHr fREQuency ‘TIME (nt OSCILLATOR FREQUENCY o2s0~4 080-5 0260-6 Rise and fall times of OUT + 8 are similar to those of OUT 1. DETAILED DESCRIPTION Ste dag). The dja cor has svarages in igh ). The dynamic ntages in hig OSCILLATOR CONSIDERATIONS speed operation and low power but suffers from limited low The oscillator consists of a CMOS inverter with a non-in- frequency operation. This results in a window of operation ear resistor connected between the oscillator input and out- for any oscillator frequency (see TYPICAL PERFORMANCE. put to provide D.C. biasing, Using commercially obtainable CHARACTERISTICS). quartz crystals the oscillator will operate from low frequen- cies (10kHz) to 10MHz. our DRIVERS st of CMOS + having ‘later ci output drivers consis inverters having ac- a nent coral vain wot soopty idl decigvod tive pullups and pulidowns. Thus the outputs can be used to bap a diractly drive TTL gates, other CMOS gates operating with a to operate with a high impedance tank circuit. Itis therefore $ volt supply, or PIL compatible MOS gates, The guaran necessary that the quart crystal &, speciiod with a Jead teed fanout is 5 TTL loads although typical fanout capability capacitance o ir standard 30pF. is at least 10 TTL loads with slightly increased output rise maximize the stability of the oscillator as a function of sup- and fall times. ply voltage and temperature, the motional capacitance of the crystal should be low (SmpF or less). Using a fixed input DEVICE POWER CONSUMPTION capacitor of 18pF and a variable capacitor of nominal value At low frequencies the principal component of the power of 18pF on the output will result in oscillator stabilties of consumption is the oscillator. At high oscillator froquencies typically 1ppm per volt change in supply voltage. the major portion of the power is consumed by the output THE = 8 OUTPUT drivers, thus by disabling the outputs (activating the DIS- ‘A dynamic divider is used to divide the oscillator frequen- ABLE INPUT) the device power consumpon can be dra- cy by 8. Dynamic dividers use small nodal capacitances to 'y reduced. NOTE: AN opel ves have ben carted te tse WAT :