BLE112-A-V1 - Bluetooth 4.0 BLE Module w/ Chip Antenna | Silicon Labs
MPN： BLE112-A-V1 ✗ 停產BLE112-A-V1 概覽
A Bluetooth low energy (BLE) module is a type of short-range RF transceiver module in the wireless connectivity family: module -> Bluetooth Low Energy transceiver -> 2.4GHz ISM-band radio -> RF & wireless component. Single-mode BLE devices (Bluetooth Smart) communicate only with BLE-capable devices, offering the lowest possible power consumption compared to dual-mode parts.
Key features include full Bluetooth v4.0 single-mode compliance, an integrated chip antenna that eliminates RF layout work, flexible hardware interfaces (SPI and UART) for connecting sensors, user interfaces, or displays directly to the module, and an integrated 8051-based MCU with 18 interrupt sources across six interrupt groups running the Bluegiga (now Silicon Labs) Bluetooth stack.
Technically, the module builds on the CC2540 system-on-chip, which combines a 2.4GHz RF transceiver with an industry-standard enhanced 8051 MCU. The Bluegiga firmware implements the complete BLE stack and profiles such as GATT, GAP, and vendor-specific profiles, exposing a simple serial interface for host-less designs. Receiver sensitivity is specified at -85dBm at 0.1% BER, adequate for Class 2 (~10 m line-of-sight) links typical of sensor and accessory designs.
Typical applications include battery-powered sensor nodes, fitness and medical accessories, proximity tags, and cable-replacement serial links (UART bridges), where coin-cell life measured in months or years is a hard requirement.
Design consideration: keep a keep-out area under the chip antenna free of copper and adjacent RF-absorbing materials, and budget the 2.0V-3.6V supply range so a 3V coin cell remains usable near end of discharge.
This page synthesizes distributor pricing, lifecycle status, family replacement options, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 BLE112-A-V1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： BLE112-A-V1 （相同外形與佔位） — 差異在於 Serial Interfaces, Mounting Type, Antenna Type, RoHS Status, Supply Voltage Range.
BLE113-A-M256K
✅ 直接替換聯絡詢價
查看資料表 →BLE121LR-A-M256K
✅ 直接替換📋 參考替代品（不在目錄中）
BM70BLES1FC2-0002AA
✅ 直接替換📋 參考替代品（不在目錄中）
BLE112-A-V1 規格（製造商公布）
| Standard | Bluetooth v4.0 (Low Energy, single mode) |
| Frequency | 2.4 GHz ISM band |
| Device Class | Class 2 (~10 m) |
| Antenna | Integrated chip antenna |
| 供應電壓 | 2.0 V to 3.6 V |
| Sleep Current (lowest power mode) | 400 nA |
| RX Sensitivity | -85 dBm |
| Serial Interfaces | SPI, UART |
| Based on IC | TI CC2540 (integrated) |
| Interrupt Sources | 18 (6 groups) |
| Wake-up Time | A few hundred microseconds |
| Battery Support | 3V coin cell / 2x AAA |
| 安裝類型 | Surface Mount (castellated pads) |
| Firmware / Software | Bluegiga BLE stack v1.0 software |
| RoHS 狀態 | Compliant |
BLE112-A-V1 介面與連接器
BLE112-A-V1 依製造商公布提供以下介面與連接器：功率輸入。擴充排針腳位、連接器腳位編號與電氣限制均定義於製造商文件中。
| 功率輸入 | 2.0 V to 3.6 V |
請參閱 製造商文件 以取得完整的擴充排針腳位定義與連接器腳位編號。
功率與熱特性
| 功率輸入 | 2.0 V to 3.6 V |
BLE112-A-V1 由製造商公布的功率輸入與熱參數。
典型應用
BLE112-A-V1 適用於 6 應用s: Battery-Powered BLE Sensor Nodes, Fitness and Health Accessories, Proximity Tags and Beacons, UART Cable-Replacement / Serial Bridge, Consumer Electronics Remote Controls and Dongles, Industrial Retrofit Telemetry.
Battery-Powered BLE Sensor Nodes
The BLE112-A-V1 is purpose-built for low-power sensors: its 2.0V-3.6V supply range accepts a 3V coin cell or two AAA cells without a regulator, and 400nA sleep current with wake-up in a few hundred microseconds enables multi-year battery life in duty-cycled designs. The on-module CC2540 MCU with 18 interrupt sources runs sensor-sampling firmware locally, while SPI and UART interfaces connect sensor ICs directly to the module. Placing the sample-then-advertise workload on the module's integrated chip antenna removes RF layout risk. The design trade-off is the -85 dBm sensitivity, which limits range to roughly 10 m line-of-sight - adequate for in-room sensors, insufficient for across-building telemetry.
推薦
Fitness and Health Accessories
Wearable and health accessories benefit directly from the BLE112-A-V1's coin-cell operation: at 400nA sleep and sub-millisecond wake, a heart-rate strap or activity tag can run for months per CR2032 cell. The Bluetooth 4.0 single-mode stack ships with GATT-based profiles used by fitness peripherals, and the integrated chip antenna avoids tuning a PCB antenna inside a plastic or textile enclosure where detuning is common. The module's 2.0-3.6V range matches single Li-MnO2 cell supplies. Design consideration: position the module so the antenna region is unobstructed by the battery and metal hardware, since coin cells near the antenna degrade radiated performance.
推薦
Proximity Tags and Beacons
Proximity tags and iBeacon-style beacons are advertising-only workloads, which is the BLE112-A-V1's most power-efficient operating regime: the module sleeps at 400nA between advertising events and wakes in a few hundred microseconds, so a 3V coin cell lasts far longer than with dual-mode radios. The integrated MCU and application flash host the beacon payload and configuration logic directly, and the UART console supports field configuration. Range is bounded by the -85 dBm sensitivity Class 2 radio (~10 m), which is typically the intended detection radius for proximity use cases; for larger coverage choose the BLE121LR-A-M256K long-range variant instead.
推薦
UART Cable-Replacement / Serial Bridge
The BLE112-A-V1's UART interface and Bluegiga serial-profile firmware let it act as a transparent serial-over-BLE bridge, replacing short RS-232 cables in point-of-sale, industrial, and instrumentation links. Because the module hosts the full BLE stack and profiles on-chip, the legacy device needs no protocol changes - its TX/RX lines connect to the module's UART. Note from Silicon Labs community experience: BLE112 throughput can become a bottleneck at higher baud rates (e.g. 38400 baud continuous streaming over SPP-like profiles) because BLE 4.0 air-rate and connection intervals limit sustained throughput; batch data and throttle the serial side accordingly.
推薦
Consumer Electronics Remote Controls and Dongles
Remote controls and USB dongle accessories use the BLE112-A-V1 as a self-contained Bluetooth Smart endpoint: the CC2540-based MCU scans button matrices or rotary encoders via GPIO/interrupts (18 interrupt sources across six groups), builds reports, and transmits them over the BLE stack without an external host MCU. Sleep current of 400nA preserves shelf life in battery-remoted products, and the integrated chip antenna simplifies consumer plastic-enclosure designs. Class 2 range (~10 m) matches typical living-room or conference-room topologies. Design tip: keep the module's antenna edge facing the enclosure's plastic window and away from the battery compartment for consistent radiated performance.
推薦
Industrial Retrofit Telemetry
Legacy industrial equipment gains BLE connectivity by bolting a BLE112-A-V1 module to existing sensor or controller UART/SPI buses: the module's own MCU collects readings, packets them into GATT characteristics, and serves them to phones or gateways - no redesign of the host system. The 2.0-3.6V supply is easily derived from industrial 3.3V rails via an LDO, and 400nA sleep suits battery-loggers. Constraints to plan for: the -85 dBm sensitivity limits range to ~10 m in metal-rich environments, so either mount the module's antenna outside the cabinet or step up to the BLE121LR-A-M256K / BGM-series successors with better link budgets for plant-wide coverage.
推薦
推薦產品摘要
工程參考資料，適用於 BLE112-A-V1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | BLE113-A-M256K | BLE121LR-A-M256K | BM70BLES1FC2-0002AA |
|---|---|---|---|---|
| Brand | Silicon Labs (Bluegiga) | Silicon Labs (Bluegiga) | Silicon Labs (Bluegiga) | Microchip Technology |
| Package | Castellated SMD module, integrated chip antenna | Castellated SMD module (smaller footprint) | Castellated SMD module, chip antenna | Castellated SMD module, chip antenna (Microchip footprint) |
| Bluetooth Version | Bluetooth 4.0 single mode | Bluetooth 4.1 single mode | Bluetooth 4.0 single mode (long range) | Bluetooth 5.0 low energy |
| Supply Voltage | 2.0 V - 3.6 V | 2.0 V - 3.6 V | 2.0 V - 3.6 V | 2.3 V - 3.6 V |
| Interfaces | SPI, UART | SPI, UART, more peripherals | SPI, UART | UART |
| Lifecycle Status | Legacy / EOL (PCN 2112141153 family) | EOL / replacement PCN issued | EOL / replacement PCN issued | Active (recommended for new designs) |
主要差異化特點
- Truly host-less operation with on-module application flash (對比BM70BLES1FC2-0002AA)
- Lowest-power coin-cell operation (對比BLE121LR-A-M256K)
- Larger memory option in family successor (對比BLE113-A-M256K)
設計說明
The integrated chip antenna requires a copper and component keep-out on the host PCB below and around the module's antenna end. Do not pour ground plane under the antenna region, and keep the module's antenna edge overhanging the board edge or facing plastic, not metal. Coins cells and shields placed near the antenna will detune it and cut radiated range below the ~10 m Class 2 expectation. Verify compliance and range testing in the final enclosure, not on a bare bench board.
The 2.0V-3.6V range allows direct 3V coin-cell or 2x AAA operation, but coin-cell internal resistance rises sharply near end of discharge during radio TX bursts. Add a bulk capacitor (e.g. 10uF+) close to the module supply pin to buffer transmit current spikes and prevent brown-out resets. Do not exceed 3.6V absolute supply; a 3.3V LDO is acceptable but wastes headroom in pure battery designs.
BLE 4.0 throughput is limited by air rate and connection intervals: field reports on the Silicon Labs community note the BLE112 struggles with continuous SPP-style streaming at 38400 baud. Do not assume transparent UART throughput equals the serial baud rate - batch data, use flow control, or move to a newer module (BGM-series, BLE 5.0) for sustained data links. Also verify GATT payload chunking (20-byte MTU in BLE 4.0) in your protocol design.
合規資訊
RoHS compliance listed by distributors. Regulatory certification details (FCC/CE/IC module approvals) are in the BLE112 datasheet but were not in the verified data provided; consult the datasheet before product certification.
