BQ48SH-28X6 Datasheet, PDF (2/6 Pages) Texas Instruments – SNAPHAT WITH INTEGRATED BATTERY AND CRYSTAL

bq48SH-28x6
SLUS508A – DECEMBER 2001 REVISED – JUNE 2002
absolute maximum ratings over operating free-air temperature (unless otherwise noted)^†
Operating temperature range, T_J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 85°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
† _{Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and}
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
Nominal battery voltage, VCC
Nominal battery capacity
TYP UNIT
2.8 V
48 mAh
crystal specifications (DT–35 or equivalent)
fO
CL
TP
k
Q
R1
CO
CO/C1
DL
∆f/fO
PARAMETER
Oscillation frequency
Load capacitance
Temperature turnover point
Parabolic curvature constant
Quality factor
Series resistance
Shunt capacitance
Capacitance ratio
Drive level
Aging (first year at 25_C)
TEST CONDITIONS
MIN TYP MAX UNIT
32.768
kHz
6
pF
20
25
30 _C
–0.042 ppm/_C
40,000 70,000
45 kΩ
1.1
1.8 pF
430 600
1 µW
1
ppm
TERMINAL
NAME
NO.
BC
3
VSS
2
X1
1
X2
4
TERMINAL FUNCTIONS
I/O
O
Battery positive terminal
I
Battery negative terminal
I
Crystal input
O
Crystal output
DESCRIPTION
2
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