SM9501A Radio Controlled Clock Receiver IC OVERVIEW The SM9501A is a BiCMOS RCC*1 receiver IC. It accepts low frequency standard wave input received from an external antenna, amplifies it, detects the data signal, and outputs a digital time code signal. Radio controlled clock ■ ■ ■ ■ ■ ■ ■ ■ Operating supply voltage range: 2.4 to 3.6V Operating current consumption: 55µA (typ) @3V Standby current consumption: 0.1µA (max) @3V High sensitivity: 0.5µVrms input Wide frequency range (35kHz to 80kHz) Include analog switch for antennatuning capacitors change AGC gain hold function External crystal filter connection BiCMOS process Package:16-pin VSOP, Chip form (Top view) 16-pin VSOP CF9501A Chip form PON IN3 OUT IN2 VSS HLDN XO CP VSSA CB 8 XI 9 LF PACKAGE DIMENSIONS (Unit: mm) + 0. 0.15 − 1 0.05 4.4 ± 0.2 SM9501AV VDD IN1 0.275TYP 5.1 ± 0.2 1.15 ± 0.1 Package 16 FCN ORDERING INFORMATION Device 1 VDDA 0.5 ± 0.2 ■ ■ PINOUT 6.4 ± 0.2 FEATURES 0.65 0.10 + 0.1 0.22 − 0.05 0 to 10 ° 0.10 ± 0.05 *1: 0.12 M SEIKO NPC CORPORATION —1 SM9501A PAD LAYOUT (CF9501A) (Unit: µm) VDDA VDD 1 16 (1430,2360) IN1 2 15 PON IN3 3 14 OUT IN2 4 FCN 5 XO 6 VSSA TN 7 13 VSS 12 HLDN 11 CP 10 CB 9 LF DA9501 NPC XI 8 (0,0) Chip size: 1.43 × 2.36mm Chip thickness: 300 ± 30µm PAD size: 100µm (TN: 80µm) Chip base: VSS level PAD NAME and DIMENSIONS (CF9501A) Pad dimensions [µm] Pad number Pad name X Y 1 VDDA 386 2117 2 IN1 177 2035 3 IN3 177 1766 4 IN2 177 1486 5 FCN 177 1217 6 XO 177 937 7 VSSA 177 586 8 XI 177 288 9 LF 1237 286 10 CB 1237 555 11 CP 1237 809 12 HLDN 1237 1078 13 VSS 1237 1302 14 OUT 1237 1755 15 PON 1237 2035 16 VDD 1031 2117 − 1 1257 1506 TN 1. For test mode SEIKO NPC CORPORATION —2 SM9501A BLOCK DIAGRAM PON OUT Bias Decoder VSS HLDN CP CB VDD VDDA Peak/Bottom Hold Det. AGC Control IN1 AGC Amp Post Amp Rectifier LPF IN3 IN2 XO VSSA XI FCN LF PIN DESCRIPTION Number Name I/O1 A/D2 1 VDDA − A AGC amplifier (+) supply input 2 IN1 I A Antenna input 1 (fixed input) 3 IN3 I A Antenna input 3 (via analog switch) 4 IN2 I A Antenna input 2 (analog switch bypass) 5 FCN Ipu D Analog switch control input (active LOW) 6 XO O A Output for crystal filter 7 VSSA − A AGC amplifier (–) supply input 8 XI I A Input from crystal filter 9 LF O A Rectifier LPF capacitor connection 10 CB O A Bottom hold detector capacitor connection 11 CP O A Peak hold detector capacitor connection 12 HLDN Ipu D AGC gain hold control (active LOW) 13 VSS − A Substrate (–) supply input 14 OUT O D Clock time code output (active LOW) 15 PON Ipu D Standby state control input (active LOW) 16 VDD − A (+) supply input − TN Ipu D AGC amplifier gain control switch (active LOW, for test mode) Description 1. I: input, O: output, Ipu: input with pull-up resistor, –: supply pin 2. A: analog signal, D: digital signal SEIKO NPC CORPORATION —3 SM9501A SPECIFICATIONS Absolute Maximum Ratings VSS = 0V Parameter Symbol Condition Rating Unit Supply voltage range VDD −0.3 to +7.0 V Input voltage range VIN −0.3 to VDD +0.3 V Power dissipation PD 16-pin VSOP 150 mW 16-pin VSOP Storage temperature range Tstg −55 to +125 °C Chip form −65 to +150 °C Note. Absolute maximum ratings are the values that must never exceed even for a moment. The device may be damaged or deteriorated the characteristics or reliability if these parameter ratings are exceeded. Recommended Operating Conditions VSS = 0V Parameter Symbol Condition Rating Unit Supply voltage range VDD 2.4 to 3.6 V Operating temperature range Topr −20 to +70 °C SEIKO NPC CORPORATION —4 SM9501A Electrical Characteristics VDD = 2.4 to 3.6V, VSS = 0V, Ta = −20 to +70°C unless otherwise noted. Rating Parameter Symbol Condition Unit min typ max 2.4 3.0 3.6 V Supply voltage VDD Maximum operating current consumption1 IDDM VDD = 3.0V, Ta = 25°C, no input signal, PON: VSS, OUT: no load – 65 100 µA Operating current consumption1 IDDT VDD = 3.0V, Ta = 25°C, 0.1mVrms input amplitude (differential input), 500ms pulsewidth, PON: VSS, OUT: no load – 55 – µA Standby mode current consumption IST VDD = VDDA = 3.6V, PON, FCN, HLDN: OPEN, OUT: no load – – 0.1 µA Minimum input voltage range Vfmin IN1–IN2 differential input, fIN = 40kHz, 60kHz, Ta = 25°C – 0.5 1.0 µVrms Maximum input voltage range Vfmax IN1–IN2 differential input, fIN = 40kHz, 60kHz 80 – – mVrms Input frequency fIN IN1–IN2 differential input 35 – 80 kHz Analog switch resistance – – 15 Ω RA VIN2 = 0V, VIN3 = 50mV Startup time2 tON When supply is applied – – 8 sec Startup time2 (PON) tPON From standby mode – – 8 sec – – 0.5 V VDD–0.5 – – V VIL Input voltage PON, FCN, HLDN pins VIH IIL VIL = 0V, PON, FCN, HLDN pins – –0.5 –1.5 µA IIH VIH = VDD , PON, FCN, HLDN pins – – 1 µA LOW-level output current IOL OUT pin, VOL = VSS + 0.5V 10 – – µA HIGH-level output current IOH OUT pin, VOH = VDD − 0.5V –10 – – µA Gain hold time tHLD ± 3dB change 1 – – sec Fall time output propagation delay3 tDN – – 160 ms Rise time output propagation delay3 tUP – – 200 ms 100 200 300 ms Input current fIN = 40kHz, 60kHz, Ta = 25°C, VIN = 1µVrms to 80mVrms, NPC standard crystal, NPC standard jig LOW-level output pulsewidth4 (200ms) T200 LOW-level output pulsewidth4 (500ms) T500 400 500 650 ms LOW-level output pulsewidth4 (800ms) T800 700 800 900 ms Noise rejection ratio5 S/N – – 9 dB 1. Measured using the standard circuit. 2. The time taken under stable wave input conditions from when power is applied or standby is released, using PON, until stable digital output occurs within ratings. 3. The time taken, with 10:1 input signal amplitude ratio and 500ms pulsewidth, from when a change in signal input amplitude occurs until the output OUT changes. Note that this characteristic is very dependent on the antenna and crystal filter characteristics. The standard crystal used for crystal filter by our measurement has the following equivalent circuit coefficients as reference values. L1 C1 R1 f [kHz] L1 [kH] C1 [fF] R1 [kΩ] C0 [pF] 40 6.70280 2.36228 11.4492 1.42773 60 5.17396 1.36007 13.4826 1.04927 C0 4. Values obtained when using the crystal filter employed here. Note that these values are dependent on the crystal characteristics, and should be considered as reference values. 5. Time averaged rms values, where the noise is white noise and the measurement bandwidth is determined by the crystal filter equivalent used in the standard circuit. Note that this value is very dependent on the crystal filter characteristics used. SEIKO NPC CORPORATION —5 SM9501A STANDARD CIRCUIT VDD 0.1µF + − VDDA VDD IN1 PON IN3 OUT 50Ω IN2 FCN *1 100kΩ 5.1kΩ 12pF 12pF 40kHz 60kHz VSS HLDN XO CP VSSA CB XI LF 1µF 0.22µF 1µF *1. These values are obtained when using NPC's standard crystal and should be considered as reference values. In case of using different crystal, the values are different. APPLICATION CIRCUIT ANT. VDD 0.1µF VDDA VDD IN1 PON IN3 OUT IN2 VSS CONTROLLER FCN *1 100kΩ 5.1kΩ 12pF 12pF 40kHz 60kHz HLDN XO CP VSSA CB XI LF 0.22µF 1µF 1µF *1. These values are obtained when using NPC's standard crystal and should be considered as reference values. In case of using different crystal, the values are different. SEIKO NPC CORPORATION —6 SM9501A FUNCTIONAL DESCRIPTION Antenna Input and Tuning Capacitor Switching Function C1 C2 IN1 L1 IN3 AGC Amp IN2 FCN There are three antenna inputs: IN1, IN2, and IN3. When FCN is open (or HIGH), the internal analog switch is OFF and IN1–IN2 are the antenna inputs (60kHz mode). When FCN is LOW, the analog switch is ON, connecting IN3 and IN2. C2 is then connected in parallel to C1 in the tuning circuit, reducing the resonant frequency (40kHz mode). FCN Analog switch Antenna input Tuning capacitor Receiver frequency Open or HIGH OFF Between IN1 and IN2 C1 60kHz LOW ON Between IN1 and IN2, IN3 C1 + C2 parallel 40kHz FCN should be left open if not using the tuning capacitor switching function, and IN2 should be connected to IN3 externally. AGC Amplifier and Gain Hold Function The input voltage from the antenna is amplified by the AGC amplifier. The gain can be monitored by the voltage on pin CP, and can be changed by varying the CP voltage. An external capacitor Cp can be connected to CP to stabilize the voltage, but the gain tracking time is dependent on the capacitance. When HLDN is open (or HIGH), the gain automatically adjusts to follow the post-amplifier detector signal. When HLDN is LOW, the immediately preceding gain is held for an interval determined by the Cp capacitance. HLDN Gain tracking Open or HIGH Auto tracking LOW Gain held fixed HLDN CP Peak Hold Detector AGC Amp CB Bottom Hold Detector Cb Cp SEIKO NPC CORPORATION —7 SM9501A Crystal Filter Circuit XI XO Rx40 Cx40 40kHz Recommended goods(Crystal filter) DAISHINKU CORP. : DT-261 Resonance frequency : 40.000kHz/60.000kHz Load capacitance : 12.5pF±25ppm Rx60 Cx60 60kHz External crystals are used as filters. Multiple frequencies (40kHz and 60kHz) are supported by connecting crystals in parallel. The center frequency and bandwidth of the filters is determined by the crystal characteristics. If the center frequency is lower than the target frequency, C×40 and C×60 can be added to change the resonant frequency. And R×40 and R×60 can be added to adjust the filter Q factor. Internally, pin XO is linked to pin XI by a phase-inverted signal passed through a capacitor, which cancels the high-frequency components that pass through the crystal parallel capacitances. Detector Circuit The amplified signal is full-wave rectified and passed through a lowpass filter detector. The detector output is input to peak hold (pin CP) and bottom hold (pin CB) circuits to form the decoder reference potentials and peak hold potential for AGC control. Peak hold Amplifier Rectifier LPF Peak/ Bottom Hold VSS potential VSS potential VSS potential Bottom hold Decoder Circuit The detector output and peak/bottom hold mid-level potential reference are used to decode the time code signal, which is output on pin OUT. The output is active-LOW, so that the output is LOW when the input amplitude is HIGH. Rectifier LPF LPF waveform VDD potential Decoder VSS potential OUT output Peak hold VSS potential Peak/ Bottom Hold Mid-level potential Bottom hold VSS potential Standby Function When PON is open (or HIGH), the device is in standby mode and the current consumption is reduced. Receiver operation starts when PON goes LOW. PON Mode OUT Open (or HIGH) Standby HIGH LOW Operating Time code SEIKO NPC CORPORATION —8 SM9501A Please pay your attention to the following points at time of using the products shown in this document. 1. The products shown in this document (hereinafter “Products”) are designed and manufactured to the generally accepted standards of reliability as expected for use in general electronic and electrical equipment, such as personal equipment, machine tools and measurement equipment. The Products are not designed and manufactured to be used in any other special equipment requiring extremely high level of reliability and safety, such as aerospace equipment, nuclear power control equipment, medical equipment, transportation equipment, disaster prevention equipment, security equipment. The Products are not designed and manufactured to be used for the apparatus that exerts harmful influence on the human lives due to the defects, failure or malfunction of the Products. If you wish to use the Products in that apparatus, please contact our sales section in advance. In the event that the Products are used in such apparatus without our prior approval, we assume no responsibility whatsoever for any damages resulting from the use of that apparatus. 2. NPC reserves the right to change the specifications of the Products in order to improve the characteristics or reliability thereof. 3. The information described in this document is presented only as a guide for using the Products. No responsibility is assumed by us for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patents or other rights of the third parties. Then, we assume no responsibility whatsoever for any damages resulting from that infringements. 4. The constant of each circuit shown in this document is described as an example, and it is not guaranteed about its value of the massproduction products. 5. In the case of that the Products in this document falls under the foreign exchange and foreign trade control law or other applicable laws and regulations, approval of the export to be based on those laws and regulations are necessary. Customers are requested appropriately take steps to obtain required permissions or approvals form appropriate government agencies. SEIKO NPC CORPORATION 1-9-9, Hatchobori, Chuo-ku, Tokyo 104-0032, Japan Telephone: +81-3-5541-6501 Facsimile: +81-3-5541-6510 http://www.npc.co.jp/ Email: [email protected] NC0304BE 2010.09 SEIKO NPC CORPORATION —9