ME83 Datasheet, PDF (2/5 Pages) Mercury United Electronics Inc – Frequency reference for real time clocks

Low Power (nA Current Consumption) 32.768 KHz
ME831, ME832, ME833, ME834 Series
TCXOs
MERCURY
Since 1973
General Specifications (at+25°C and specified input voltage)
Product Series
Temperature Measurement
Period (TMP). Also known as
Compensation Interval.
Frequency
Supply Voltage (V_DD) Range
Supply
Voltages
(V_DD)
Tolerance
(V_DD)
Voltage Code
ME831, ME832, ME833 and ME834
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 I_DD data below.
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.
1.7V min.; 5.5V max.
1.8V±5%
2.5V±5%
3.0V±5%
3.3V±5%
5V±5%
1.71V ~ 1.89V 2.37V ~ 2.62V
2.85V ~
3.15V
2.97V ~
3.63V
4.75V ~
5.25V
18
25
3
33
5
Supply Current (I_DD1).Typical.
Conditions: No load. 25°C.
Fout=32.768 KHz.
Peak Current during Tem-
perature Measurement (I_DD2).
Typical. Conditions: No load.
25°C. Fout=32.768 KHz.
Supply Current (I_DD3) when
pad 1 is disabled. Typical.
Conditions: No load. 25°C.
Fout=32.768 KHz
Supply Current (I_DD4). Typical.
Conditions: No load. 25°C.
Fout=32 Hz.
0.79 uA
1.95uA
0.39 uA
327 nA
1.05 uA
2.00 uA
1.25 uA
1.37 uA
2.05 uA
2.03 uA
2.05 uA
2.14 uA
0.47 uA
408 nA
0.53 uA
460 nA
0.56uA
470 nA
0.80 uA
700 nA
Initial Calibration Tolerance ±1.5 ppm max. at specified V_DD, Ta=+25±2°C. Output enable.
±5 ppm max. over -40°C to +85°C. w.r.t fo at +25°C.
Frequency Stability (ppm)
over Temperature
Timing Error
over Time
Per day
Per month
Per year
±0.432 sec/day max.
±12.960 sec/month max.
±2.628 minutes / year max.
Frequency Stability
vs Aging
vs Load Change
vs Reflow
vs all range of V_DD (∆f/V)
Supply Voltage Variation
(∆V_DD)
Output Wave Form
Output Load
±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. V_DD = 1.7 V to 5.5 V.
0.25 V max. Supply voltage stability. At specified V_DD. Condition: ∆V / ∆t = 1 V/µs
CMOS Square wave.
15 pF
MERCURY
Page 2 of 5
Date: June 30, 2014
Revision: 6