DS76KHZ Datasheet, PDF (1/5 Pages) Dallas Semiconductor – 76.8 kHz TCXO

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PRELIMINARY
DS76KHz
76.8 kHz TCXO
FEATURES
Accurate to ±7.5 ppm (-40°C to +85°C)
Accurate to ±2 ppm (0°C to 40°C)
Battery back up for continuous output
V_BAT operating voltage 2.7 to 5.5 volts (with
V_CC grounded)
V_CC operating voltage 4.5 to 5.5 volts
Operating temperature range:
COM: 0°C to 70°C
IND: -40°C to +85°C
No calibration required
Low power consumption
Surface mountable
V_CC:
V_BAT:
76KHz:
GND:
C2, C3, D2, D3
A4, A5, B4, B5
C4, C5, D4, D5
All Remaining Balls
PIN ASSIGNMENT
AB
CD
1
2
3
4
5
6
7
8
9
DS76KHz 36-Pin SMD
(TOP VIEW)
DESCRIPTION
The DS76KHz is a temperature-compensated crystal oscillator (TCXO) with an output frequency of 76.8
kHz. This device is available in commercial and industrial temperature versions, DS76KHz and
DS76KHz-N respectively.
The DS76KHz requires four pins for operation: V_CC, GND, V_BAT and 76KHz OUT. See Figures 1, 2 and
3 for connection schemes. Power is applied via V_CC and GND, while V_BAT is used to maintain the 76KHz
output in the absence of power. The output is accurate to ±7.5 ppm from -40°C to +85°C and ±2 ppm
from 0°C to 40°C.
The DS76KHz is packaged in a small 36-pin SMD, utilizing Ball Grid Array (BGA) technology, with
dimensions 0.400 inches wide, 0.450 inches long, and 0.180 inches high.
The recommended land pattern layout is shown on page 5.
The additional board space required is negligible in most applications and therefore the recommended
land pattern layout should be implemented on all new designs and future board revisions to satisfy
applications requiring better accuracy.
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