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Maxim >
제품 >
클록, 카운터, 딜레이 라인, 발진기, RTC
DS32KHZS 32.768kHz TCXO
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Provides < ±2min/yr Accuracy
The DS32KHZS provides superior accuracy for real-time clock (RTC) applications that require less than ±2min/yr (±4ppm) accuracy over the industrial temperature range of -40°C to +85°C . The DS32KHZS is packaged in a cost-effective, standard 16-pin 300 mil SO. Package dynamics allow this version of the DS32KHZS to be calibrated to ±1.75min/yr (±3.5ppm) over the entire -40°C to +85°C range.
When combined with the DS1375 RTC, the industry's most accurate, simple, and cost- effective RTC solution can be realized. However, the DS32KHZS is not limited to use with just the DS1375. A host of Dallas Semiconductor RTCs can be used in any application desired by the user. A list of available clocks are shown in the table below. Additionally, the DS32KHZS can be used to drive microprocessor clocks.
The DS32KHZS provides more than just accuracy. In addition, the device is able to provide power switching between the main power source and a backup battery source. When in a battery-backed state, the accuracy of the clock does not diminish. For batterybacked applications, the user only needs to supply a 3V backup energy source to maintain time in the absence of system power and a host processor to access time through the RTC control interface. Typical applications for the DS32KHZS include telematics, electricity meters, security-/access-control systems, servers, GPS, and time-based billing systems.
Key Features
- ±2.0 ppm (±1 min/yr), 0°C to +70°C
- ±3.5 ppm (±1.75 min/yr), -40°C to +85°C
- 3.3V or 5.5V Power Supply Operation
- < 4µA Power Consumption
- Automatic Power Switching
- No Calibration Required
- Surface-Mount, 16-Pin, 300 mil, SO
- UL Recognized
Free Samples
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Application Notes
Alternate Dallas Semiconductor RealTime Clocks
- DS1340, DS1340C: 트리클 충전기가 내장된 I²C RTC
- DS1375: 알람기능이 내장된 I²C 디지털 입력 RTC
- DS1374, DS1374C, DS1374U: 트리클 충전기 및 리셋 입/출력을 갖는 I²C 32비트 바이너리 카운터 워치독 RTC
- DS1338, DS1338C, DS1338U, DS1338Z: 56바이트 NV RAM이 내장된 I²C RTC
- DS1371: I²C, 32비트 바이너리 카운터 워치독 클록
- DS1339, DS1339C, DS1339U: I²C 직렬 실시간 클록
- DS1337, DS1337C: I²C 직렬 실시간 클록
- DS1307: 64 x 8, 직렬, I²C 실시간 클록
- DS1306: 직렬 경보 실시간 클록
- DS1305: 직렬 경보 실시간 클록
- DS1302: 트리클 충전 타임키핑 칩
참조
실시간 클록
TCXOs
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