DS32KHZSLASHWBGA datasheet(5/10 Pages) DALLAS

tên linh kiện	DS32KHZ/WBGA

Giải thích chi tiết về linh kiện	32.768kHz Temperature-Compensated Crystal Oscillator

PDF	10 Pages

Scroll/Zoom	100%

nhà sản xuất	DALLAS [Dallas Semiconductor]

Trang chủ	https://www.maximintegrated.com/en.html

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5 / 10 page

DS32kHz

5 of 10

PIN DESCRIPTIONS

BGA

DIP

NAME

FUNCTION

A4, A5, B4, B5

VBAT

+3V Batttery Supply

A7, A8, B7, B8,

C7, C8, D7, D8

10, 11

TPIN

Test Pin (must be grounded)

C2, C3, D2, D3

VCC

Primary Power Supply

C4, C5, D4, D5

32KHZ OUT

32.768kHz Output

—

1, 6–9, 14

N.C.

No Connection

All remaining balls

GND

Ground

Figure 1. Delta Time and Frequency vs. Temperature

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

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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TYPICAL CRYSTAL

UNCOMPENSATED

DS32kHz

OUTPUT

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