AT42QT1040-MMHR vs AT42QT2120-MMHR 对比
详细并排对比 AT42QT1040-MMHR 出自 Microchip Technology 和 AT42QT2120-MMHR 出自 Microchip Technology。对比关键规格、电气参数、封装、生命周期状态、价格和供货情况，以确定最适合您设计需求的元器件。
Microchip Technology
AT42QT2120-MMHR - 12-Channel QTouchADC Touch Controller | Microchip
AT42QT2120-MMHR ✓ 量产中规格对比
| 参数 | AT42QT1040-MMHR | AT42QT2120-MMHR |
|---|---|---|
| 品牌 | Microchip Technology | Microchip Technology |
| 分类 | Touch Sensors | Touch Sensors |
| 生命周期状态 | 有效 | 有效 |
| 库存状态 | 有库存 | 有库存 |
| 单价（USD） | $0.68 | $1.85 |
| Number of Touch Keys | 1 to 4 (individually configurable) | — |
| Sensor Technology | QTouch charge-transfer (burst mode) | — |
| Supply Voltage (VDD) | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| 电源电流 | [DATA_NEEDED: quiescent current in uA] | — |
| 输出类型 | Parallel discrete outputs (1 per key) | — |
| 输出数量 | 4 (one per active key) | — |
| Communication Interface | GPIO (no I2C/SPI required) | I2C / SMBus-compatible |
| Self-Calibration Time | ~100 ms after power-up | — |
| Recalibration | Automatic on stuck-key / drift detection | — |
| 工作温度范围 | -40 C to +85 C | -40 C to +125 C (MM suffix: extended industrial) |
| 封装 | 20-pin VQFN (3x3 mm) | 20-pin VQFN (3x3 mm), exposed pad (MM package) |
| 安装类型 | Surface Mount | Surface Mount |
| MSL 等级 | [DATA_NEEDED: MSL rating] | — |
| RoHS 状态 | Compliant | Compliant |
| Lead-Free / Halogen-Free | Yes (per Microchip product page) | — |
| Product Type | — | Capacitive Touch Controller |
| Number of Touch Channels | — | 12 (configurable) |
| Touch Sensing Algorithm | — | QTouchADC (self-capacitance, patent pending) |
| Configurable Touch Patterns | — | Buttons, sliders, wheels |
| Drift Compensation | — | On-chip, slew-rate limited reference adjustment |
| Simultaneous Key Arbitration | — | Integrated (AKS-like) |
| Proximity Sensing | — | Yes, via self-capacitance |
| MSL (Moisture Sensitivity Level) | — | MSL3 / 260 C peak reflow (per Microchip MM package profile) |
| Reel Orientation | — | R (suffix to mirror standard reel carrier sheet direction) |