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PDF DS32KHZ Data sheet ( Hoja de datos )
| Número de pieza | DS32KHZ | |
| Descripción | 32.768kHz Temperature-Compensated Crystal Oscillator | |
| Fabricantes | Dallas Semiconducotr | |
| Logotipo |  |
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DS32kHz
32.768kHz Temperature-Compensated
Crystal Oscillator
www.maxim-ic.com
GENERAL DESCRIPTION
The DS32kHz is a temperature-compensated crystal
oscillator (TCXO) with an output frequency of
32.768kHz. This device addresses applications
requiring better timekeeping accuracy and can be
used to drive the X1 input of most Dallas
Semiconductor real-time clocks (RTCs), chipsets, and
other ICs containing RTCs. This device is available in
commercial (DS32kHz) and industrial (DS32kHz-N)
temperature versions.
APPLICATIONS
GPS Receivers
Telematics
Network Timing and Synchronization in Servers,
Routers, Hubs, and Switches
Automatic Power Meters
PIN CONFIGURATIONS
TOP VIEW
FEATURES
§ Accurate to ±4 Min/Yr (-40°C to +85°C)
§ Accurate to ±1 Min/Yr (0°C to +40°C)
§ Battery Backup for Continuous Timekeeping
§ VBAT Operating Voltage: 2.7V to 5.5V with VCC
Grounded
§ VCC Operating Voltage: 4.5V to 5.5V
§ Operating Temperature Range:
0°C to +70°C (Commercial)
-40°C to +85°C (Industrial)
§ No Calibration Required
§ Low-Power Consumption
§ Surface Mountable Using BGA Package
§ UL Recognized
ORDERING INFORMATION
PART
DS32kHz/DIP
DS32kHz-N/DIP
DS32kHz/WBGA
DS32kHz-N/WBGA
TEMP RANGE
0ºC to +70ºC
-40ºC to +85ºC
0ºC to +70ºC
-40ºC to +85ºC
PIN-PACKAGE
14 DIP
14 DIP
36 BGA
36 BGA
BGA
N.C.
GND
VBAT
N.C.
N.C.
1 14
2 13
3 12
4 11
5 10
69
78
DIP
N.C.
VCC
32KHZ OUT
TPIN
TPIN
N.C.
N.C.
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.
1 of 10
REV: 041603
1 page  
PIN DESCRIPTIONS
PIN
BGA
DIP
A4, A5, B4, B5
A7, A8, B7, B8,
C7, C8, D7, D8
C2, C3, D2, D3
5
10, 11
13
C4, C5, D4, D5
—
All remaining balls
12
1, 6–9, 14
4
NAME
FUNCTION
VBAT
TPIN
VCC
32KHZ OUT
N.C.
GND
+3V Batttery Supply
Test Pin (must be grounded)
Primary Power Supply
32.768kHz Output
No Connection
Ground
Figure 1. Delta Time and Frequency vs. Temperature
TYPICAL CRYSTAL
UNCOMPENSATED
DS32kHz
OUTPUT
DS32kHz
0.00
-10.00
-20.00
-30.00
-40.00
-50.00
-60.00
-70.00
-80.00
-90.00
-100.00
FUNCTIONAL DESCRIPTION
The DS32kHz requires four pins for operation: VCC, GND, VBAT, and 32KHZ OUT. (See Figure 3 for connection
schemes.) Power is applied through VCC and GND, while VBAT is used to maintain the 32kHz output in the absence
of power. The output is accurate to ±7.5ppm (±4 min/yr) from –40°C to +85°C and ±2ppm (±1 min/yr) from 0°C to
+40°C.
The DS32kHz is packaged in a small 36-pin SMD using ball grid array (BGA) technology
with dimensions 0.400" wide, 0.450" long, and 0.124" high. It also is available in a 14-pin DIP module.
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 timekeeping accuracy.
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5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet DS32KHZ.PDF ] | |
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