AS7341
Multi-Spectral Digital SensorThe AS7341 is a multi-spectral digital sensor from ams OSRAM Group. View the full AS7341 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
Official AS7341 datasheet (PDF) — the source this page was extracted from.
AS7341 Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage Range | 1.7V to 2.0V |
| Operating Current (Idle) | Typ 35 μA, Max 60 μA |
| Operating Current (Active) | Typ 210 μA, Max 300 μA |
| Operating Temperature Range | -30°C to 70°C |
AS7341 Overview
Part: AS7341 — ams OSRAM Group
Type: 11-Channel Multi-Spectral Digital Sensor
Description: An 11-channel spectrometer with 8 visible, 1 near-infrared (NIR), and 1 clear channel, plus an integrated flicker detection channel, covering approximately 350nm to 1000nm, available in an ultralow profile 3.1mm x 2mm x 1mm package.
Operating Conditions:
- Supply voltage: 1.7–2.0 V
- Operating temperature: -30 to 70 °C
Absolute Maximum Ratings:
- Max supply voltage: 2.2 V
- Max output terminal current: 20 mA
- Max operating ambient temperature: 85 °C
- Max storage temperature: 85 °C
Key Specs:
- Active mode supply current: 210 μA (typ) at VDD=1.8V, TA=25°C
- Idle mode supply current: 35 μA (typ) at VDD=1.8V, TA=25°C
- Sleep mode supply current: 0.7 μA (typ) at VDD=1.8V, TA=25°C
- SCL, SDA input high voltage: 1.26 V (min)
- SCL, SDA input low voltage: 0.54 V (max)
- F1 channel center wavelength: 415 nm (typ)
- NIR channel center wavelength: 910 nm (typ)
- Half cone angle: 40 deg (typ)
Features:
- 8 optical channels distributed over the visible spectral range + clear and NIR channels
- Integrated ambient light flicker detection on chip and light source detection through NIR channel
- Electronic shutter/trigger and synch control via GPIO
- GPIO can be used as input for external photodiodes
- Low power consumption and efficient I²C communication
- Configurable sleep mode to <5μA
- Interrupt-driven device
Applications:
- High-precision reflective color point and spectral measurements
- Fluid color, turbidity or reagent based constituent analysis
- Spectral power distribution and passive ambient CCT measurement for home and building automation
- High-end display color management
Package:
- OLGA-8 (3.1mm x 2mm x 1mm)
AS7341 Features
The benefits and features of AS7341, 11-Channel Multi-Spectral Digital Sensor, are listed below:
Figure 1: Added Value of Using AS7341
| Benefits | Features |
|---|---|
| Precision color, spectral composition and distribution measurments | 8 optical channels distributed over the visible spectral range + clear and NIR channels realized via silicon nano-optic interference filter deposition technologies |
| Low power consumption and efficient I²C communication | ● 1.8VDD operation, max 300μA ● Configurable sleep mode to <5μA ● Interrupt-driven device |
| Integrated ambient light flicker detection on chip and light source detection through NIR channel | ● Dedicated channel ● Independently configurable timing and gain ● Automatic gain adjustment ● 50Hz and 60Hz flicker detection flags |
| Electronic shutter/trigger and synch control | GPIO can be used as external trigger input or light source synchronization output |
| External photodiodes to expand detection range | GPIO can be used as input for external photodiodes including mid-IR range |
Figure 1: Added Value of Using AS7341
AS7341 Applications
- High-precision reflective color point and spectral measurements
- Fluid color, turbidity or reagent based constituent analysis
- Spectral power distribution and passive ambient CCT measurement for home and building automation
- High-end display color management
AS7341 Pin Configuration
Figure 4: Pin Description of AS7341
| Pin Number | Pin Name | Pin Type (1) | Description |
|---|---|---|---|
| 1 | VDD | P | Positive supply terminal |
| 2 | SCL | DI | Serial interface clock signal line for I 2 C interface |
| 3 | GND | P | Ground. All voltages referenced to GND |
| 4 | LDR | A_I/O | LED current sink input |
| 5 | PGND | P | Ground. All voltages referenced to GND |
| 6 | GPIO | DI | General purpose input/output |
| 7 | INT | DO_OD | Interrupt. Open drain output. Connect pull up resistor to 1.8V. |
| 8 | SDA | D_I/O | Serial interface data signal line for I 2 C interface |
- (1) Explanation of abbreviations:
DI
Digital Input
D_I/O
Digital Input/Output
DO_OD
Digital Output, open drain
P
Power pin
A_I/O
Analog pin
AS7341 Electrical Characteristics
All limits are guaranteed. The parameters with Min and Max values are guaranteed with production tests or SQC (Statistical Quality Control) methods. All voltages with respect to GND/PGND. Device parameters are guaranteed at VDD=1.8V and TA=25°C unless otherwise noted.
Figure 6: Electrical Characteristics of AS7341
| Symbol | Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| V DD | Supply Voltage | 1.7 | 1.8 | 2.0 | V | |
| T A | Operating free-air temperature (1) | -30 | 25 | 70 | °C | |
| Power Consumption | Power Consumption | Power Consumption | Power Consumption | Power Consumption | Power Consumption | Power Consumption |
| V DD =1.8V; T A =25°C Active mode (3) | 210 | 300 | μA | |||
| I DD | Supply Current (2) | V DD =1.8V; T A =25°C Idle mode (4) | 35 | 60 | μA | |
| V DD =1.8V; T A =25°C Sleep mode (5) | 0.7 | 5 | μA | |||
| Digital pins | Digital pins | Digital pins | Digital pins | Digital pins | Digital pins | Digital pins |
| V IH | SCL,SDA input high voltage | 1.26 | V | |||
| V IL | SCL,SDA input low voltage | 0.54 | V | |||
| V OL | INT, SDA output low voltage | 6mA sink current | 0.4 | V | ||
| C I | Input pin capacitance | 10 | pF | |||
| I leak | Leakage current into SCL,SDA,INT pins | -5 | 5 | μA | ||
| GPIO | GPIO | GPIO | GPIO | GPIO | GPIO | GPIO |
| C LOAD | Maximum capacitive load GPIO | 20 | pF |
AS7341 Absolute Maximum Ratings
Stresses beyond those listed under 'Absolute Maximum Ratings' may cause permanent damage to the device. These are stress ratings only. Functional operation of the device at these or any other conditions beyond those indicated under 'Operating Conditions' is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. All voltages with respect to GND/PGND. Device parameters are guaranteed at VDD=1.8V and TA=25°C unless otherwise noted.
Figure 5 Absolute Maximum Ratings of AS7341
| Symbol | Parameter | Min | Max | Unit | Comments |
|---|---|---|---|---|---|
| Electrical Parameters | Electrical Parameters | ||||
| V DD / V GND | Supply Voltage to Ground | -0.3 | 2.2 | V | Applicable for pin VDD |
| V ANA_MAX | Analog Pins | -0.3 | 3.6 | V | Applicable for pin LDR |
| V DIG_MAX | Digital Pins | -0.3 | 3.6 | V | Applicable for pins SCL,SDA and INT |
| I SCR | Input Current (latch-up immunity) | ± 100 | mA | JEDEC JESD78D Nov 2011 | |
| I O | Output Terminal Current | -1 | 20 | mA | |
| Electrostatic Discharge | Electrostatic Discharge | ||||
| ESD HBM | Electrostatic Discharge HBM | ± 2000 | V | JS-001-2014 | |
| ESD CDM | Electrostatic Discharge CDM | ± 500 | V | JEDEC JESD22-C101F | |
| Temperature Ranges and Storage Conditions | Temperature Ranges and Storage Conditions | ||||
| T A | Operating Ambient Temperature | -30 | 85 | °C | |
| T STRG | Storage Temperature Range | -40 | 85 | °C | |
| T BODY | Package Body Temperature | 260 | °C | IPC/JEDEC J-STD-020 (1) | |
| RH NC | Relative Humidity (non- condensing) | 5 | 85 | % | |
| MSL | Moisture Sensitivity Level | 3 | Maximum floor life time of 168h |
Figure 5 Absolute Maximum Ratings of AS7341
AS7341 Typical Application
Figure 92 shows an example how AS7341 can be utilized to interface to an external InGaAs photodiode. GPIO2 is mapped to an internal ADC.
AS7341 Package Information
- (1) All dimensions are in millimeters. Angles in degrees.
- (2) Dimensioning and tolerance conform to ASME Y14.5M-1994.
- (3) This package contains no lead (Pb).
- (4) This drawing is subject to change without notice.
Variants on the same datasheet
These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.
| Part Number | Manufacturer | Package |
|---|---|---|
| AS7341-DLGM | ams-OSRAM | OLGA-8 |
| AS7341-DLGT | ams-OSRAM | OLGA-8 |
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