DS32kHz-N/BGA Dallas Semiconductor, DS32kHz-N/BGA Datasheet

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DS32kHz-N/BGA

Manufacturer Part Number
DS32kHz-N/BGA
Description
32.768khz Tcxo
Manufacturer
Dallas Semiconductor
Datasheet
ORDERING INFORMATION
DS32kHz/BGA
DS32kHz-N/BGA
DS32kHz/DIP
DS32kHz-N/DIP
FEATURES
§ Accurate to ±4 Min/Yr (-40°C to +85°C)
§ Accurate to ±1 Min/Yr (0°C to 40°C)
§ Battery back up for continuous timekeeping
§ V
§ V
§ Operating temperature range:
§ No calibration required
§ Low-power consumption
§ Surface mountable using BGA package
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 may 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 and industrial temperature versions, DS32kHz
and DS32kHz-N respectively.
www.maxim-ic.com
V
– 0°C to 70°C (Commercial)
– -40°C to +85°C (Industrial)
– V
– V
– 32kHz:
– GND:
– T
BAT
CC
CC
PIN
CC
BAT
grounded
operating voltage: 4.5V to 5.5V
operating voltage: 2.7V to 5.5V with
:
:
:
36-Pin BGA
36-Pin BGA
14-Pin DIP
14-Pin DIP
C2, C3, D2, D3
A4, A5, B4, B5
C4, C5, D4, D5
All Remaining Balls
A7, A8, B7, B8, C7, C8,
D7, D8
0ºC to +70ºC
-40ºc to +85ºC
0ºC to +70ºC
-40ºc to +85ºC
1 of 8
GND
GND
GND
GND
GND
V
V
T
T
PIN ASSIGNMENT
BAT
BAT
PIN
PIN
PIN DESCRIPTION
V
V
GND
NC
T
PIN
CC
BAT
A
14-Pin DIP Module (300-mil)
GND
V
NC
NC
NC
BAT
B
DS32kHz 36-Pin SMD
DS32kHz
1
2
3
4
5
6
7
8
9
- Primary Power Supply
- +3V Battery Supply
- Ground
- No Connect
- Test Pin (Must Be Grounded)
(Top View)
1
2
3
4
5
6
7
32.768kHz TCXO
14
13
12
11
10
9
8
1
2
3
4
5
6
7
8
9
NC
V
32kHz OUT
T
T
NC
NC
PIN
PIN
CC
C
DS32kHz
D
GND
V
V
32kHz Out
32kHz Out
GND
T
T
GND
PIN
PIN
CC
CC
100801

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DS32kHz-N/BGA Summary of contents

Page 1

... T : A7, A8, B7, B8, C7, C8, PIN D7, D8 ORDERING INFORMATION DS32kHz/BGA 36-Pin BGA DS32kHz-N/BGA 36-Pin BGA DS32kHz/DIP 14-Pin DIP DS32kHz-N/DIP 14-Pin DIP 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 may be used to drive the X1 input of most Dallas Semiconductor real-time clocks (RTCs), chipsets, and other ICs containing RTCs ...

Page 2

... OPERATION The DS32kHz module contains a crystal and an IC. While powered, the DS32kHz peridocially measures the temperature and adjusts the crystal load to compensate. The DS32kHz is designed to operate in two modes. In the dual-supply mode, a comparator circuit, powered by V monitors the relationship between the V CC GND and 4) 32kHz OUT ...

Page 3

... Figure 2.0.) CC POWER SUPPLY CONNECTIONS Figures 1.0 and 2.0 Figure 1.0 Figure 1.0 shows how the DS32kHz should be connected when using two power supplies. V between 4.5V and 5.5V and V can be used when only a single-supply system is available held between 2.7V and 5.5V. The V components. ...

Page 4

... CC BAT Figure 4 shows one recommended circuit that can be used to reduce the current consumption of a DS32kHz and an RTC. The values of R1 and C1 will vary depending on the RTC used. However, values of 1.0MW and 100pF are recommended as a starting point. RELATED APPLICATION NOTES Application Note 58 – Crystal Considerations with Dallas Real-Time Clocks Application Note 701 – ...

Page 5

ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground Operating Temperature Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the ...

Page 6

... DS32kHZ OUTPUT WAVEFORM MECHANICAL DIMENSIONS ...

Page 7

RECOMMENDED LAND PATTERN LAYOUT (36-Pin BGA ...

Page 8

... DS32kHz 14-PIN DIP MODULE PKG 14-PIN DIP DIM MIN A IN. 0.825 B IN. 0.420 C IN. 0.235 D IN. 0.100 E IN. 0.015 F IN. 0.110 G IN. 0.090 H IN. 0.290 J IN. 0.008 K IN. 0.015 Note: Pins 2, 3 are missing by design. MAX 0.840 0.440 0.260 0.130 0.030 ...

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