Digital ambient light sensor and proximity module AMS TMD27723WA with optical crosstalk compensation
Product Overview
The TMD2772/TMD2772WA family of devices offers a digital ambient light sensing (ALS) and a complete proximity detection system with integrated digital interface logic in a compact 8-pin surface mount module. These devices are register-set and pin-compatible with the TMD2771 family, featuring enhanced ALS and proximity detection capabilities, including a reduced-gain mode for extended sunlight operation and improved signal-to-noise performance for proximity detection. They are available with 25 (TMD2772) and 50 (TMD2772WA) fields of view. The ALS utilizes ams' patented dual-diode technology for human-eye-like light response, while the proximity system includes a factory-trimmed IR LED driver to eliminate end-equipment calibration needs. A proximity offset register allows compensation for optical crosstalk, and a saturation indicator bit prevents false readings.
Product Attributes
- Brand: ams
- Product Type: Digital ALS and Proximity Module
- Certifications: JEDEC JESD78D, JEDEC JESD22-C101F, JS-001-2014
Technical Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions |
| Supply Voltage | VDD | 2.2 | 3 | 3.6 | V | |
| Operating Free-Air Temperature | TA | -30 | 85 | C | (1) | |
| LED Supply Voltage on LEDA input | VLEDA | 2.5 | 4.8 | V | TA between 0-70 C | |
| LED Supply Voltage on LEDA input | VLEDA | 2.5 | 4.4 | V | TA outside of 0-70 C | |
| Supply current (Active, LDR pulse off) | IDD | 195 | 250 | A | ||
| Supply current (Wait state) | IDD | 90 | A | |||
| Supply current (Sleep state, no IC activity) | IDD | 2.2 | A | |||
| Input high voltage (SCL, SDA) | VIH | 0.7 VDD | V | TMD27721, TMD27725, TMD27721WA | ||
| Input high voltage (SCL, SDA) | VIH | 1.25 | V | TMD27723, TMD27727, TMD27723WA | ||
| Input low voltage (SCL, SDA) | VIL | 0.3 VDD | V | TMD27721, TMD27725, TMD27721WA | ||
| Input low voltage (SCL, SDA) | VIL | 0.54 | V | TMD27723, TMD27727, TMD27723WA | ||
| Dark ADC count value (CH0) | 0 | 1 | 5 | counts | Ee = 0, AGAIN = 120, ATIME = 0xDB (100ms) | |
| Dark ADC count value (CH1) | 0 | 1 | 5 | counts | Ee = 0, AGAIN = 120, ATIME = 0xDB (100ms) | |
| ADC Integration time step size | 2.58 | 2.73 | 2.9 | ms | ATIME = 0xFF | |
| ADC counts per step | 0 | 1023 | counts | ATIME = 0xFF | ||
| ADC count value | 0 | 65535 | counts | ATIME = 0xC0 | ||
| ADC count value (TMD2772, 25, p = 625 nm) | CH0 | 4000 | 5000 | 6000 | counts | Ee = 46.8 W/cm2 |
| ADC count value (TMD2772, 25, p = 850 nm) | CH0 | 4000 | 5000 | 6000 | counts | Ee = 61.7 W/cm2 |
| ADC count value (TMD2772WA, 50, p = 625 nm) | CH0 | 4000 | 5000 | 6000 | counts | Ee = 129.5 W/cm2 |
| ADC count value (TMD2772WA, 50, p = 850 nm) | CH0 | 4000 | 5000 | 6000 | counts | Ee = 181.2 W/cm2 |
| ADC count value ratio: CH1/CH0 (p = 625 nm) | 0.152 | 0.19 | 0.228 | |||
| ADC count value ratio: CH1/CH0 (p = 850 nm) | 0.43 | 0.58 | 0.73 | |||
| Irradiance responsivity (TMD2772, 25, p = 625 nm) | CH0 | 107.2 | counts /(W/ cm2) | |||
| Irradiance responsivity (TMD2772, 25, p = 850 nm) | CH0 | 81.5 | counts /(W/ cm2) | |||
| Irradiance responsivity (TMD2772WA, 50, p = 625 nm) | CH0 | 38.6 | counts /(W/ cm2) | |||
| Irradiance responsivity (TMD2772WA, 50, p = 850 nm) | CH0 | 27.6 | counts /(W/ cm2) | |||
| Gain scaling, relative to 1 gain setting (AGAIN = 8) | 7.2 | 8.0 | 8.8 | x | AGL = 0 | |
| Gain scaling, relative to 1 gain setting (AGAIN = 16) | 14.4 | 16.0 | 17.6 | x | AGL = 0 |
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