DS32KHZSN Maxim Integrated Products, DS32KHZSN Datasheet - Page 5

• Manufacturer Part Number: DS32KHZSN
• Description: Timers & Support Products 32.768kHz Push-Pull TXCO Crystal Oscilla
• Manufacturer: Maxim Integrated Products

Specifications of DS32KHZSN

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIN DESCRIPTION
Figure 2. Delta Time and Frequency vs. Temperature
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
Figure 4
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.
3–12, 15, 16
-100
-120
-140
-160
-180
-200
-20
-40
-60
-80
SO
13
14
20
1
2
0
for connection schemes.) Power is applied through V
-40
-30
C4, C5, D4, D5
C2, C3, D2, D3
A7, A8, B7, B8,
C7, C8, D7, D8
A4, A5, B4, B5
Crystal +20ppm
All remaining
Crystal -20ppm
BGA
-20
balls
PIN
-10
1, 6–11, 14
0
DIP
12
13
4
5
Uncompensated
Typical Crystal,
10
Temperature (°C)
20
5 of 8
NAME
32kHz
GND
N.C.
V
V
BAT
30
CC
DS32kHz
Accuracy
CC
Band
40
and GND, while V
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
50
CC
60
, GND, V
CC
is absent.
FUNCTION
BAT
70
is used to maintain the
BAT
, and 32kHz. (See
80
0
-20
-40
-60
-80
-100