AS621x Digital Temperature Sensor
The AS621x is a high-accuracy digital temperature sensor system designed for a wide range of applications, particularly those requiring low power consumption and easy integration. It features a Si bandgap temperature sensor, an Analog-to-Digital Converter (ADC), and a digital signal processor. The device communicates via a 2-wire digital bus (IC) and offers factory calibration, integrated linearization, and the ability to use up to eight AS621x devices on a single bus through selectable IC addresses. An alert functionality is included to trigger interrupts for device protection against excessive temperatures. The AS621x production test setup is calibrated against NIST, and verification equipment is calibrated by an ISO/IEC-17025 accredited laboratory.
Key Benefits & Features
- High Measurement Accuracy: Up to 0.2C for AS6212.
- Low Power Consumption: 6 A typical @ operation (4 Hz), 0.1 A typical @ standby.
- Wide Supply Voltage Range: 1.71 3.6 V.
- Small PCB Footprint: 1.5 mm x 1 mm (WLCSP).
- Integrated Alert Functionality.
- Multiple IC Addresses supported.
Applications
- Electronic Equipment
- Tablets
- Convertibles
- Laptops
- Personal Computers
- Wearables
- HVAC
Technical Specifications
| Model | Temperature Accuracy | Temperature Range | Supply Voltage | Operation Current (Typ.) | Standby Current (Typ.) | Resolution | Conversion Time (Typ.) | Package |
|---|---|---|---|---|---|---|---|---|
| AS6212 | 0.2C | -10C to 65C | 1.71 3.6 V | 6 A @ 4 Hz | 0.1 A | 16 Bits | 22 ms | WLCSP |
| AS6214 | 0.4C | 0C to 65C | 1.71 3.6 V | 6 A @ 4 Hz | 0.1 A | 16 Bits | 22 ms | WLCSP |
| AS6218 | 0.8C | 0C to 65C | 1.71 3.6 V | 6 A @ 4 Hz | 0.1 A | 16 Bits | 22 ms | WLCSP |
Ordering Information
| Ordering Code | Package | Marking | Delivery Form | Delivery Quantity |
|---|---|---|---|---|
| AS6212-AWLT-S | WLCSP | AS6212 | Tape & Reel | 500 pcs/reel |
| AS6212-AWLT-L | WLCSP | AS6212 | Tape & Reel | 5000 pcs/reel |
| AS6214-AWLT-S | WLCSP | AS6214 | Tape & Reel | 500 pcs/reel |
| AS6214-AWLT-L | WLCSP | AS6214 | Tape & Reel | 5000 pcs/reel |
| AS6218-AWLT-S | WLCSP | AS6218 | Tape & Reel | 500 pcs/reel |
| AS6218-AWLT-L | WLCSP | AS6218 | Tape & Reel | 5000 pcs/reel |
Pin Assignment (WLCSP)
| Pin Number | Pin Name | Pin Type | Description |
|---|---|---|---|
| A1 | VSS | S | Ground Pin |
| A2 | ALERT/ADD1 | DIO_SOD | Alert output and address select1 |
| A3 | SCL | DI_S | Serial Interface Clock |
| B1 | VDD | S | Positive Supply Voltage |
| B2 | ADD0 | DI_S | Address select 0 |
| B3 | SDA | DIO_SOD | Serial Interface Data |
Note on Pins: External pull-up resistors (to VDD) are necessary for SDA and SCL. ADD0 must not be left unconnected. ALERT/ADD1 can be used for interrupts and requires a pull-up resistor if used; otherwise, it must be connected to VSS or SCL depending on the IC address selection.
Absolute Maximum Ratings
| Symbol | Parameter | Min | Max | Unit | Comments |
|---|---|---|---|---|---|
| VDD / VSS | Supply Voltage to VSS | -0.3 | 4 | V | Reference to VSS |
| VDIO | IO Pin voltage | -0.3 | 4 | V | Reference to VSS |
| ISCR | Input Current (latch up immunity) | -100 | 100 | mA | According to JESD78D |
| ESDHBM | Electrostatic Discharge HBM | -2000 | 2000 | V | MIL_STD_833J-3015.9 |
| TA | Operating Ambient Temperature | -40 | 125 | C | |
| TJ | Operating Junction Temperature | -40 | 125 | C | |
| TSTRG | Storage Temperature Range | -55 | 125 | C | |
| TBODY | Package Body Temperature | 260 | C | IPC/JEDEC J-STD-020 | |
| RHNC | Relative Humidity (non-condensing) | 5 | 85 | % | |
| MSL | Moisture Sensitivity Level | 1 | Unlimited floor life time |
Operating Conditions
| Parameter | Symbol | Min | Typ | Max | Unit | Note |
|---|---|---|---|---|---|---|
| Supply Voltage | VDD | 1.71 | 2.0 / 3.0 | 3.6 | V | T= 0 C to 125 C / T= -40 C to 125 C |
| Temperature Range | T | -40 | 125 | C | ||
| Standby Current Consumption | IDD | 0.1 / 0.3 / 9.0 | 0.4 | A | T= -40 C to 65 C / T= 65 C to 125 C | |
| Current Consumption (4 conversions /s) | IDD | 6 | 16 | A | T= -40 C to 65 C / Serial bus inactive | |
| Resolution | N | 16 | Bits | |||
| Conversion Time | TS | 22 | 36 | 51 | ms | |
| Conversion Rate | NS | 0.25 | 1 / 4 | 8 / 10.7 | Conv/s | CR[1:0]=00 / CR[1:0]=11 |
| Supply Voltage Rise Time | TRise_VDD | 20 | ms | from 0.1 V to 1.6 V | ||
| Supply Voltage Slew Rate | SR_VDD | 50 | mV/ms | from 0.1 V to 1.6 V |
Temperature Accuracy Values
| Variant | Symbol | Min | Typ | Max | Unit | Note |
|---|---|---|---|---|---|---|
| AS6212 | TERR | -0.3 | -0.2 | 0.3 | C | T= -40 C to -10 C |
| -0.3 | -0.2 | 0.3 | C | T= -10 C to 65 C | ||
| -0.5 | 0.3 | 0.5 | C | T= 65 C to 85 C | ||
| -0.5 | 0.5 | 1.0 | C | T= 85 C to 125 C | ||
| AS6214 | TERR | -1.0 | -0.4 | 1.0 | C | T= -40 C to 0 C |
| -0.4 | 0.4 | C | T= 0 C to 65 C | |||
| -1.0 | 1.0 | C | T= 65 C to 125 C | |||
| AS6218 | TERR | -1.0 | -0.8 | 1.0 | C | T= -40 C to 0 C |
| -0.8 | 0.8 | C | T= 0 C to 65 C | |||
| -1.0 | 1.0 | C | T= 65 C to 125 C |
Note on Accuracy: Values are representative for a 3 distribution and valid for the complete supply voltage range.
Digital System Parameters
| Parameter | Symbol | Pins | Min | Max | Unit | Note |
|---|---|---|---|---|---|---|
| High level input voltage | VIH | SCL, ADD0 | 0.7 * VDD | V | ||
| Low level input voltage | VIL | SCL, ADD0 | 0.3 * VDD | V | ||
| Hysteresis voltage | VHYST | SCL,ADD0, SDA, Alert | 200 | 1200 | mV | |
| Input leakage current | ILEAK | SCL;ADD0 | -1 | 1 | A | VIL=0.0 V |
| Low level output voltage | VOL | Alert | VSS+0.4 | V | IOL=3 mA | |
| High level input voltage | VIH | SDA | 0.7 * VDD | V | ||
| Low level input voltage | VIL | SDA | 0.3*VDD | V | ||
| Low level output voltage | VOL | SDA | VSS+0.4 | V | ||
| Tristate leakage current | IOZ | SDA | -10 | 10 | A | to VSS |
2412111217_AMS-AS6212-AWLT-L_C3663115.pdf
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