BLE112-A-V1 - Bluetooth 4.0 BLE Module w/ Chip Antenna | Silicon Labs
Référence : BLE112-A-V1 ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $26.06 | $26,06 |
| 10 | $23.45 | $234,50 |
| 100 | $20.85 | $2 085,00 |
| 500 | $18.77 | $9 385,00 |
| 1 000 | $16.89 | $16 890,00 |
BLE112-A-V1 Présentation
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.
Alternatives de remplacement direct pour BLE112-A-V1 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec BLE112-A-V1 (même facteur de forme et même empreinte) — différant par Serial Interfaces, Mounting Type, Antenna Type, RoHS Status, Supply Voltage Range.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
BLE113-A-M256K
✅ Remplacement direct✓ En stock
$1.55 / unité
Voir la fiche technique →BLE121LR-A-M256K
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
BM70BLES1FC2-0002AA
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
BLE112-A-V1 Spécifications (publiées par le fabricant)
| Standard | Bluetooth v4.0 (Low Energy, single mode) |
| Frequency | 2.4 GHz ISM band |
| Device Class | Class 2 (~10 m) |
| Antenna | Integrated chip antenna |
| Tension d'alimentation | 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 |
| Type de montage | Surface Mount (castellated pads) |
| Firmware / Software | Bluegiga BLE stack v1.0 software |
| Statut RoHS | Compliant |
Interfaces et connecteurs du BLE112-A-V1
Le BLE112-A-V1 expose les interfaces et connecteurs suivants tels que publiés par le fabricant : Alimentation. Le brochage de l'embase d'extension, la numérotation des broches des connecteurs et les limites électriques sont définis dans la documentation du fabricant.
| Alimentation | 2.0 V to 3.6 V |
Consultez la documentation du fabricant pour le brochage complet du connecteur d'extension et la numérotation des broches du connecteur.
Caractéristiques de puissance et thermiques
| Alimentation | 2.0 V to 3.6 V |
Paramètres d'alimentation et thermiques pour BLE112-A-V1 tels que publiés par le fabricant.
Applications typiques
BLE112-A-V1 convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour BLE112-A-V1 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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) |
Principaux différenciateurs
- Truly host-less operation with on-module application flash (vs BM70BLES1FC2-0002AA)
- Lowest-power coin-cell operation (vs BLE121LR-A-M256K)
- Larger memory option in family successor (vs BLE113-A-M256K)
Notes de conception
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.
Informations de conformité
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.
