参数资料
型号: DS32KHZSN#
厂商: Maxim Integrated
文件页数: 5/8页
文件大小: 0K
描述: IC OSC 32.768KHZ TEMPCOMP 16SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 45
系列: DS
类型: TCXO
频率: 32.768kHz
输出: CMOS
电源电压: 5V
频率稳定性: ±7.5ppm
工作温度: -40°C ~ 85°C
电流 - 电源(最大): 220µA
安装类型: 表面贴装
尺寸/尺寸: 0.412" L x 0.300" W(10.46mm x 7.62mm)
高度: 0.105"(2.67mm)
封装/外壳: 16-SOIC(0.295",7.50mm 宽)
包装: 管件
产品目录页面: 1435 (CN2011-ZH PDF)

DS32kHz
PIN DESCRIPTION
SO
1
2
3–12, 15, 16
13
14
PIN
BGA
C4, C5, D4, D5
C2, C3, D2, D3
A7, A8, B7, B8,
C7, C8, D7, D8
All remaining
balls
A4, A5, B4, B5
DIP
12
13
1, 6–11, 14
4
5
NAME
32kHz
V CC
N.C.
GND
V BAT
FUNCTION
32.768kHz Push-Pull Output
Primary Power Supply
No Connection (Must be grounded)
Ground
+3V Nominal Supply Input. Used to operate the
device when V CC is absent.
Figure 2. Delta Time and Frequency vs. Temperature
20
0
-20
Crystal +20ppm
Typical Crystal,
0
-40
Uncompensated
DS32kHz
Accuracy
-20
-60
-80
-100
Band
-40
-120
-140
-160
-180
-200
Crystal -20ppm
-60
-80
-100
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
Temperature (°C)
FUNCTIONAL DESCRIPTION
The DS32kHz is a temperature-compensated crystal oscillator (TCXO) that outputs a 32,768Hz square wave.
While the DS32kHz is powered by either supply input, the device measures the temperature every 64 seconds and
adjusts the output frequency. The device requires four pins for operation: V CC , GND, V BAT , and 32kHz. (See
Figure 4 for connection schemes.) Power is applied through V CC and GND, while V BAT is used to maintain the
32kHz output in the absence of power. Once every 64 seconds, the DS32kHz measures the temperature and
adjusts the output frequency. The output is accurate to ±2ppm (±1 min/yr) from 0°C to +40°C and to ±7.5ppm
(±4 min/year) from -40°C to 0°C and from +40°C to +85°C.
5 of 8
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