sm5170 Nippon Precision Circuits Inc, (NPC), sm5170 Datasheet
sm5170
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sm5170 Summary of contents
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... OVERVIEW The SM5170AV is a PLL synthesizer IC developed for application in pagers. It incorporates independently- controlled reference frequency and FIN input frequency dividers, and operates from a low-voltage supply to realize low power dissipation. It features a charge pump that operates at 3V, making possible a wide range of VCO designs. ...
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... OPR – – 16 TEST I 1V SM5170AV 16Bit R-Counter 16Bit R-Latch 22Bit Shift Register Level Shifter 17Bit N-Latch 5Bit Swallow Counter 12Bit Main Counter Description Reference frequency divider crystal oscillator connection pins. Alternatively, an external clock input can be connected to XIN. The clock is output on XOUT. Feedback resistor built-in for AC-coupled inputs. ...
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... Absolute Maximum Ratings Parameter Supply voltage Input voltage range Storage temperature range Power dissipation Recommended Operating Conditions Parameter Supply voltage Operating temperature range SM5170AV Symbol Condition V VDD1 DD1 V VDD2 DD2 V FIN, XIN, TEST IN1 V OPR, CLK, DATA, LE IN2 T stg ...
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... Note 6. DB output is derived from the V supply. DB-pin condition select bit = (11111) DD2 Note 7. DO output is derived from the V supply. V DD2 Note 8. DO output is derived from the V supply. V DD2 V IH DATA CLK LE SM5170AV = 2.0 to 3.3V − ° C DD2 Symbol Condition I Note 1 DD1 I Note 2 DD2 I Note 3 st1 ...
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... The last two data bits determine the status of the shift register data latch. Bit 23 Bit Swallow counter and main counter frequency divider ratio latch select 0 1 Reference frequency counter divider ratio data and LD output latch select SM5170AV supply. The data is input using CLK, DATA and DD2 DD2 ...
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... Main Counter (12bit : 32 to 4095) Figure 4. Swallow counter and main counter frequency divider data example SM5170AV P and × × (M − × (where M > 32 4095 N = 1056 to 131071 ...
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... Therefore, the reference counter count is 144 (0000000010010000) LD output The output set by bit 20. Bit 20 LD output 1 Normal unlock signal output (normal operation) 0 Unlock signal output OFF, LOW-level output SM5170AV × × 65535 262140 ...
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... Reference Counter (16bit : 5 to 65535) Control bits Figure 6. Reference counter data and LD output setting example Standby Mode The SM5170AV enters standby mode when OPR goes LOW. In this mode, the states and functions shown in the table occur. Block State DO and DB Floating (high impedance) ...
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... INPUT/OUTPUT EQUIVALENT CIRCUITS XIN, XOUT XIN XOUT DB From Internal Circuits From Internal Circuits From Internal Circuits From Internal Circuits LD From Internal Circuits TEST TEST SM5170AV DO From Internal Circuits Lagging Phase Correction Signal Leading Phase Correction Signal To Internal Counter From FIN Internal Circuits FIN DB ...
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... Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any entity not in compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are requested appropriately take steps to obtain required permissions or approvals from appropriate government agencies. SM5170AV SEIKO NPC CORPORATION 15-6, Nihombashi-kabutocho, Chuo-ku, ...