QUARTZ
EURO
EME83 SERIES TCXO
32.768kHz
Low Power (nA Current Consumption)
GENERAL SPECIFICATIONS (at 25°C and specified input voltage)
Product Series
EME831, EME832, EME833 and EME834
EME831
EME832
EME833
EME834
Every 4 minutes
(standard series)
Every 1 minute
Every 2 minutes
Every 30 seconds
Temperature Measurement
Period (TMP), Also known as
Compensation Interval.
Overall power consumption increases for more frequent measurement periods. For lowest power
consumption the 4 minute measurement period (model EME834) is recommended. For peak current
DD
during temperature measurement see I data below
Standard frequency: 32.768kHz
Frequency
Also available in 4.096kHz, 1.024kHz, 128Hz, 32Hz, 1Hz, 1/10Hz, 1/60Hz.
DD
1.7V minimum, 5.5V maximum
Supply Voltage (V ) Range
DD
1.8V ±5%
1.71V ~ 1.89V
18
2.5V ±5%
2.37V ~ 2.62V
25
3.0V ±5%
2.85V ~ 3.15V
3
3.3V ±5%
2.97V ~ 3.63V
33
5.0V ±5%
4.75V ~ 5.25V
5
(V
)
Supply
Voltages
DD
Tolerance
(V
)
Voltage Code
DD1
Supply Current (I ) Typical
Conditions: No load, 25°C,
OUT
0.79µA
1.95µA
1.05µA
2.0µA
1.25µA
2.03µA
1.37µA
2.05µA
2.05µA
2.14µA
f
= 32.768kHz
Peak Current during
DD2
Temperature Measurement (I
Typical. Conditions: No load, 25°C,
)
OUT
f
= 32.768kHz
DD3
Supply Current (I ) when Pad 1
is disabled. Typical
Conditions: No load, 25°C,
OUT
0.39µA
327nA
0.47µA
408nA
0.53µA
0.56µA
470nA
0.80µA
700nA
f
= 32.768kHz
DD4
Supply Current (I ) Typical
Conditions: No load, 25°C,
OUT
460nA
f
= 32Hz
O
Initial Calibration Tolerance
±1.5ppm maximum over -40° to +85°C w.r.t. f at +25°C
O
±5ppm maximum over -40° to +85°C w.r.t. f at +25°C
Per day
±0.432 s/day max.
Frequency Stability (ppm)
over temperature
Timing Error
over Time
Per month
Per year
±12.960 s/month max.
±2.628 minutes/year max.
Frequency Stability
vs. Ageing
±3ppm/year maximum first year at 25°C
vs. Load Change
vs. Reflow
±0.2ppm max. for a 10% load condition change
±1ppm max. 1 reflow and measured 24 hours afterwards
DD
vs. All range of VDD (∆f/V)
±1ppm/Volt max. V = 1.7V to 5.5V.
Supply Voltage Variation
DD
0.25 V max. Supply voltage stability at specified V . Condition ∆V / ∆t = 1 V/µs
DD
)
(∆V
Output Wave Form
Output Load
CMOS Square Wave
15pF
Page 2 of 5
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk