CM22B
CM22B
Small size, Low height, Holdover better than ±1.5us/8h(△T=±5℃);
Application: Power grid, Clock reference, Base station, Broadcast, Radar etc.
Feature:
1.5μs holdover for 8 hrs, ultra thin, high cost effective, applied to a relatively stable temperature environment
Package:20x20x13mm
|
1 PPS Reference input | Parameters | Min. | Typ. | Max. | Unit. | Test Condition |
| Waveform | HCMOS | |||||
| High-level Output Voltage | 2.4 | V |
50Ω | |||
| Low-level Output Voltage | 0.4 | V | ||||
| Pulse Width | 10 | μs | ||||
| Connector | Pin 2 | |||||
|
State Output | Parameters | Min. | Typ. | Max. | Unit. | Test Condition |
| Lock | 2.4 | V | <5mA Load | |||
| Holdover | 0.4 | V | <5mA Load | |||
| Connector | Pin 12 | |||||
|
RF Output | Parameters | Min. | Typ. | Max. | Unit. | Test Condition | ||||||
| Frequency | 10 | MHz | ||||||||||
| Waveform | HCMOS | |||||||||||
| High-level Output Voltage | 2.4 | V | <5mA Load | |||||||||
| Low-level Output Voltage | 0.4 | V | <5mA Load | |||||||||
| Rise/Fall Time | 8 | ns | <5mA Load | |||||||||
| Duty Cycle | 45 | 50 | 55 | % | <5mA Load | |||||||
| Accuracy | -5 | +5 | E-12 | 24 hours average when lock to 1 PPS | ||||||||
| Short-term stability | -1 | +1 | E-11 | Temperature stability, no EMI/EMC or other interference, test after power for 1 hour ref. to 25℃; 1s, using PN9000 equipment | ||||||||
| Aging Tolerance Per Day | -5 | +5 | E-10 | Vcc, TA constant measurement referenced to frequency observed with TA=2525℃, Vcc=5.0V, in FREE RUN condition and after 30 days of operation. | ||||||||
| Aging Tolerance Per Year | -5 | +5 | E-8 | |||||||||
|
Phase noise | -118 | dBc/Hz | @10Hz offset | |||||||||
| -138 | dBc/Hz | @100Hz offset | ||||||||||
| -148 | dBc/Hz | @1KHz offset | ||||||||||
| -150 | dBc/Hz | @10KHz offset | ||||||||||
| -150 | dBc/Hz | @100KHz offset | ||||||||||
| -150 | dBc/Hz | @1MHz offset | ||||||||||
| Connector | Pin 6 | |||||||||||
| Holdover Capability | Holdover Time | Min. | Typ. | Max. | Unit. | Test Condition | ||||||
| 8 hours | -1.5 | 1.5 | μs | △T=±5℃, 8 hours holdover after turning on 7 days and GPS lock 3 days | ||||||||
|
Supply Voltage | Parameters | Min. | Typ. | Max. | Unit. | Test Condition |
| Supply Voltage | 3.135 | 3.3 | 3.465 | V | ||
| Current consumption | 750 | mA | During warm-up | |||
| 350 | mA | During steady state operation @25℃ | ||||
| AC ripple | 50 | mV | 10Hz ~ 1MHz | |||
| Connector | Pin 3 | |||||
|
1PPS Output Waveform Features | Parameters | Min. | Typ. | Max. | Unit. | Test Condition |
| Waveform | HCMOS | |||||
| High-level Output Voltage | 2.4 | V |
50Ω | |||
| Low-level Output Voltage | 0.4 | V | ||||
| Pulse Width | 100 | ms | ||||
| Connector | Pin 5 | |||||
|
State intput | Parameters | Min. | Typ. | Max. | Typ. | Test Condition |
| Lock | 2.4 | V | <5mA Load | |||
| Holdover | 0.4 | V | <5mA Load | |||
| Connector | Pin 1 | |||||
|
Serial Interfaces | Parameters | Min. | Typ. | Max. | Typ. | Test Condition |
| Rx high-level input voltage | 2.4 | V | ||||
| Rx low-level input voltage | 0.4 | V | ||||
| Tx high-level output voltage | 2.4 | V | ||||
| Tx low-level output voltage | 0.4 | μs | ||||
| Serial protocol | 9600-N-8-1 | |||||
| Connector | Pin 8 and Pin 9 | |||||
|
Environment Compliance | Parameter | Conditions |
| Operating temperature | -40℃~ 85℃ | |
| Storage temperature | -55℃~ 105℃ | |
| Storage humidity | 30% ~ 80% | |
| ESD level | Human Body Model, class 2: 2000V to 4000V; ANSI/ESDA/JEDEC JS-001-2-2010. | |
| Human Body Model, class B: 200V to 400V; ANSI/ESDA/JEDEC JS-001-2010. | ||
| Moisture Sensitivity Level | Not humidity sensitive |
Vibration
Test Condition:
Amplitude: 0.75mm；acceleration: 10g；10Hz~500Hz; a cycle per 30min, test for 2 hours in 3 directions
（3 directions: X, Y and Z）, IEC 68-2-06 Test Fc.
Shock
50g；11ms；half sine wave （3 directions: X, Y and Z）, IEC 68-2-27 TestEa/Severity 50A.