ME83

ME83 MERCURY | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 5

Technical content

Low Power (nA Current Consumption) 32.768 KHz TCXOs ME831, ME832, ME833, ME834 Series MERCURY Since 1973 MERCURY Page 1 of 5 Date: June 30, 2014 Revision: 6 Features:  ME83x is a 32.768 KHz CMOS output TCXO with a maximum frequency stability of ±5 ppm (±2.62 minutes / year) over -40 to +85°C, much better time-keeping accuracy than the competition.  A proprietary temperature compensation technique is applied to the built-in X-cut 32.768 KHz tuning fork crystal and temperature sensor.  A 400 nA current consumption (average, fout ≤ 128 Hz, 4 min TMP.) makes it ideal for battery-operated devices.  5 x 7x1.8 ceramic SMD package, ideal for new miniaturizing applications.  Designed for long-term frequency reference applications. Applications:  Frequency reference for real time clocks (RTCs)  Smart metering, data loggers  Portable instruments  GPS receivers. Telematics.  Timing synchronization for networks, servers, hubs, routers and switches  Timing reference input for various energy metering ICs. Related Mercury Products:  If temperature compensation is not required, please use Mercury HA series 32.768K (AT-cut crysta;l uA current Consumption, ±25/±50/±200 ppm over commercial or industrial temperature ranges ).  If tighter than ±5 ppm frequency stability is required, such as ±1~±2.5 ppm over -40 to +85°C, please use Mercury M572T 32.768K TCXO or VM572T 32.768K VCTCXO series (All AT-cut crystals; mA current consumption). Frequency-Temperature Characteristic MERCURY www.mercury-crystal.com Taiwan: TEL (886)-2-2406-2779, FAX (886)-2-2496-0769, e-mail: sales-tw@mercury-crystal.com U.S.A.: TEL (1)-909-466-0427, FAX (1)-909-466-0762, e-mail: sales-us@mercury-crystal.com -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 ME83x, Temperature Compensated. ∆f / f = ±5 ppm max. Temperature (°C) ∆f / f (ppm) Not Temperature Compensated.

Low Power (nA Current Consumption) 32.768 KHz TCXOs ME831, ME832, ME833, ME834 Series MERCURY Since 1973 MERCURY Page 2 of 5 Date: June 30, 2014 Revision: 6 General Specifications (at+25°C and specified input voltage) Product Series ME831, ME832, ME833 and ME834 Temperature Measurement Period (TMP). Also known as Compensation Interval. ME831 ME832 ME833 ME834 Every 1 minute Every 2 minutes Every 30 seconds Every 4 minutes (standard series) During the temperature measurement the power consumption increases. For lowest power consumption the 4-minute measurement period (model ME834) is recommended. For peak current during temperature measurement see IDD data below. Frequency Standard frequency: 32.768 KHz Also available in 4.096 KHz, 1.024 KHz, 128 Hz, 32 Hz, 1Hz, 1/10 Hz, 1/60 Hz. Supply Voltage (VDD) Range 1.7V min.; 5.5V max. Supply Voltages (VDD) 3.15V 2.97V ~ 3.63V 4.75V ~ 5.25V Voltage Code 18 25 3 33 5 Supply Current (IDD1).Typical. Conditions: No load. 25°C. Fout=32.768 KHz. Peak Current during Tem- perature Measurement (IDD2). Typical. Conditions: No load. 25°C. Fout=32.768 KHz. Supply Current (IDD3) when pad 1 is disabled. Typical. Conditions: No load. 25°C. Fout=32.768 KHz Supply Current (IDD4). Typical. Conditions: No load. 25°C. Fout=32 Hz. 327 nA 408 nA 460 nA 470 nA 700 nA Initial Calibration Tolerance ±1.5 ppm max. at specified VDD, Ta=+25±2°C. Output enable. Frequency Stability (ppm) over Temperature Timing Error over Time Per day ±0.432 sec/day max. Per month ±12.960 sec/month max. Per year ±2.628 minutes / year max. Frequency Stability vs Aging vs Load Change vs Reflow vs all range of VDD (∆f/V) ±3 ppm/year max. first year at +25°C ±0.2 ppm max. for a ±10% loading condition change ±1 ppm max. 1 reflow and measured 24 hours afterwards ±1 ppm /volt max. VDD = 1.7 V to 5.5 V. Supply Voltage Variation (∆VDD) 0.25 V max. Supply voltage stability. At specified VDD. Condition: ∆V / ∆t = 1 V/µs Output Wave Form CMOS Square wave. Output Load 15 pF

Low Power (nA Current Consumption) 32.768 KHz TCXOs ME831, ME832, ME833, ME834 Series MERCURY Since 1973 MERCURY Page 3 of 5 Date: June 30, 2014 Revision: 6 Output Voltage Levels VOH VDD - 0.4 V min. IOH = -0.1 mA, all VDD range VOL 0.4 V max. IOL = 0.1 mA, all VDD range Rise Time (Tf) and Start-up Time (Ts) 1 sec. max. at +25°C; 3 sec. max. over -40°C to +85°C Duty Cycle (Symmetry) 32768 Hz, 4096 Hz and 1024 Hz: 50% ±10% max. Measured at 50% of VDD over 40°C to +85°C. 128 Hz, 32 Hz, 1Hz, 1/10 Hz, 1/60 Hz: 50% ±5% max. Pin 1 OE Thresholds Vih = 0.8 * VDD. Vil = 0.2 * VDD Environmental Performance and Specifications Absolute Maximum Rating Supply Voltage (VDD) -0.5V min.; 6.5V max. Vss = 0V Ambient temperature range -40 to +85°C Storage temperature range -40 to +85°C for temperature compensated units Typical Frequency Stability over Temperature: -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 Green Compliance RoHS compliant, Pb (lead) free in accordance with EU Directive 2002/95/EC Moisture Sensitivity Level MSL= 1. According to IPC/JEDEC J-STD-020D.1 Humidity 85% RH, 85°C, 48 hours Hermeticity Leak rate 2x10-8 ATM-cm3/sec max. Solderability MIL-STD-202F method 208E Vibration MIL-STD-202F method 204, 35G, 50 to 2000 Hz Shock MIL-STD-202F method 213B, test condi. E, 1000GG ½ sine wave Electrostatic Sensitivity 2KV min. Human body model (HBM) according to IEC 61000-4-2. Contact pad surface finish 0.3~1.2 um gold over 1.27~8.89 um nickel Solder Reflow 20 sec. max. at peak temperature of 260°C. Two reflows max. Weight of the Device 0.196 grams typical Frequency Stability Temperature (°C) ∆f / f (ppm)

Low Power (nA Current Consumption) 32.768 KHz TCXOs ME831, ME832, ME833, ME834 Series MERCURY Since 1973 MERCURY Page 4 of 5 Date: June 30, 2014 Revision: 6 Peak Current during Temperature Measurement Period Example shown below: 18ME833 series. (VDD =1.8V, temperature measurement period= 30 sec.) Block Diagram Package Dimensions and Suggested Land Pattern:5x7 mm Package unit: mm 5.00±0.15 0.10 1.27 1.8 max. 0.70 1.40 Bottom view Land Pattern 1.8 1 2 3 7.00±0.15 123 5 6 2.0 1.8 5.08 5.08 typical M E C 30 seconds Temperature sensor / Compensation circuit Pin 1 Output Enable Pin 2 Do not connect Pin 3 Ground Pin 4 Frequency out Pin 5 Do not connect Pin 6 Supply Voltage Pin 1 Connection Output No connection or VDD Frequency output Ground High impedance Oscillator Power-On Reset VDD Vss Frequency Divider Fout OE EPROM

Low Power (nA Current Consumption) 32.768 KHz TCXOs ME831, ME832, ME833, ME834 Series MERCURY Since 1973 MERCURY Page 5 of 5 Date: June 30, 2014 Revision: 6 Te m pe rat ur e User tp User Tp≤Tc Part Number Format: Example: 18ME834-32768 : Customer to specify   

18 ME83 4 — 32768

   dash   Product series: ME83  Product series: 1, 2, 3 or 4 depends on temperature measurement period.  Frequency in Hz: 32768 Hz. Orderable Part Numbers Output Frequency Supply Voltage Codes Product codes / Temperature Measurement Time xxME83y-1/60 1/60 Hz xx=18: VDD is 1.8V xx=25: VDD is 2.5V xx=3: VDD is 3.0V xx=33: VDD is 3.3V xx=5: VDD is 5.0V xx can be custom ME831 (1 min.). y= 1 ME832 (2 min.) y= 2 ME833 (30 sec.) y= 3 ME834 (4 min.) y= 4 xxME83y-1/10 1/10 Hz xxME83y-1 1 Hz xxME83y-32 32 Hz xxME83y-128 128 Hz xxME83y-1024 1024 Hz xxME83y-4096 4096 Hz xxME83y-32768 32768 Hz Recommended Solder Reflow Profile (per IPC/JEDEC J-STD-020D.1) Profile Feature Sn-Pb Eutectic Assembly Pb-free Assembly Preheat/Soak - Temperature min. (Ts min.) - Temperature max. (Ts max.) - Time (ts) (Ts min. to Ts max.) 100⁰C 150⁰C 60 to 120 seconds 150⁰C 200⁰C 60 to 180 seconds Ramp-up rate (TL to Tp) 3⁰C / sec. max. 3⁰C / sec. max. Liquidous temperature (TL ) Time (tL) maintained above TL 183⁰C 60 to 150 seconds 217⁰C 60 to 150 seconds Peak package body temperature (Tp) 235⁰C 260⁰C Time (Tp) within 5⁰C of the classification temperature Tc 10 to 30 seconds 20 to 40 seconds Ramp-down rate (Tp to TL) 6⁰C / second max. 6⁰C / second max. Time 25⁰C to peak temperature 6 minutes max. 8 minutes max. All temperatures refer to topside of the package, measured on the package body surface. t s t L Tp TL t p Preheat Area Tsmin Tsmax Max. Ramp Up Rate=3°C/s Max. Ramp Down Rate=6°C/s Tc-5°C Time 25°C to Peak Time Tc Tc-5°C