MAX11046BECB+T - 8-Ch 16-Bit 250ksps Simultaneous-Sampling ADC | Analog Devices
Référence : MAX11046BECB+T ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $38.71 | $38,71 |
| 10 | $35.2 | $352,00 |
| 100 | $31.84 | $3 184,00 |
| 250 | $28.93 | $7 232,50 |
| 500 | $26.99 | $13 495,00 |
MAX11046BECB+T Présentation
A successive-approximation-register ADC is a converter architecture that performs a binary search on the input voltage using an internal DAC and comparator, producing one conversion result per sample clock while dissipating very little power per conversion. SAR ADCs sit within the broader category of analog-to-digital converters (ADCs) -> data converters -> signal-chain ICs -> mixed-signal semiconductors. The MAX11046 family extends this architecture by replicating eight T/H + SAR cores on one die, enabling synchronized multi-phase measurements (three-phase power, multi-axis vibration, parallel sensor arrays) that cannot be served by a single-channel SAR ADC.
Key features include ±5 V true bipolar inputs (high-impedance, > 1 Gohm), ±20 mA internal overrange clamps, internal 4.096 V bandgap reference (with optional external reference drive), 4 MHz T/H input bandwidth, internal or external conversion clock, and a 20 MHz bidirectional parallel interface for fast data throughput. Each channel delivers 250 ksps independent sampling, and oversampling can be cascaded across multiple devices for higher effective rates.
The device operates from a single +5 V analog supply (AVDD) and a +2.7 V to +5.25 V digital supply (DVDD), with separate grounds (AGND/DGND) and the exposed pad (EP) tied to AGND for thermal dissipation. Integrated ±20 mA input clamps protect downstream converters from fault transients up to ±25 V at the input pins. The MAX11046 is specified over the -40 C to +85 C industrial temperature range and is offered in both 14-bit (MAX11044) and 16-bit (MAX11046) grades.
Typical applications include three-phase power-line monitoring and protection relays, multi-axis vibration analysis, simultaneous-sampling industrial instrumentation, and any multi-channel data-acquisition system requiring tight channel-to-channel sampling alignment. The bipolar ±5 V input range allows direct connection to current-sense amplifiers and PT/CT-derived signals without external level shifting.
When designing with this device, tie REFIN to AVSS through a 10 uF bypass cap if the internal reference is used, or drive REFIN with an external low-noise reference for best DC accuracy. Place the AGND/DGND star-ground connection directly under the EP for clean return paths, and use 0.1 uF + 10 uF decoupling on each supply pin. The 'T' suffix indicates Tape & Reel packaging per EIA-481.
This page synthesizes distributor stock, drop-in pin-compatible alternatives, application circuit guidance, and design notes not collected in any single manufacturer datasheet.
Alternatives de remplacement direct pour MAX11046BECB+T — 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 MAX11046BECB+T (même facteur de forme et même empreinte) — différant par Input Type, Input Voltage Range, Number of Channels, Package, RoHS Status.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MAX11046BECB+
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MAX11045BECB+T
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MAX11047BECB+T
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MAX11044BECB+T
✅ Remplacement direct✓ En stock
$15.2 / unité
Voir la fiche technique →AD7606BSTZ
✅ Remplacement direct✓ En stock
$16.9 / unité
Voir la fiche technique →MAX11046BECB+T Valeurs maximales et caractéristiques électriques
| Résolution | 16 bit |
| Number of Channels | 8 (simultaneous sampling) |
| Sampling Rate per Channel | 250 ksps |
| ADC Architecture | SAR (Successive Approximation) |
| Plage de tension d'entrée | ±5 V (true bipolar) |
| Input Type | Single-ended, high-impedance (>1 Gohm) |
| Analog Supply (AVDD) | +5 V |
| Digital Supply (DVDD) | +2.7 V to +5.25 V |
| Internal Reference | 4.096 V (bandgap) |
| External Reference Input | Yes (REFIN pin) |
| T/H Input Bandwidth | 4 MHz |
| Digital Interface | 20 MHz bidirectional parallel |
| Input Overrange Clamps | ±20 mA internal |
| Température de fonctionnement | -40 C to +85 C (industrial) |
| Boîtier | 64-pin TQFP-EP (10x10 mm) |
| Statut RoHS | Compliant |
| Lead-Free | Yes |
Configuration des broches de MAX11046BECB+T
| Broche 1 | AVSS — Analog ground (negative supply return) |
| Broche 2 | AIN0 — Analog input channel 0 |
| Broche 3 | AIN1 — Analog input channel 1 |
| Broche 4 | AIN2 — Analog input channel 2 |
| Broche 5 | AIN3 — Analog input channel 3 |
| Broche 6 | AIN4 — Analog input channel 4 |
| Broche 7 | AIN5 — Analog input channel 5 |
| Broche 8 | AIN6 — Analog input channel 6 |
| Broche 9 | AIN7 — Analog input channel 7 |
| Broche 10 | AVDD — Analog +5 V supply |
| Broche 11 | AGND — Analog ground |
| Broche 12 | REFIN — External reference input |
| Broche 13 | REFOUT — Internal 4.096 V reference output |
| Broche 14 | REFGND — Reference ground |
| Broche 15 | CONVST — Conversion start input |
| Broche 16 | RD — Read strobe |
| Broche 17 | CS — Chip select (active low) |
| Broche 18 | WR — Write strobe |
| Broche 19 | D0 — Digital data bit 0 (LSB) |
| Broche 20 | D1 — Digital data bit 1 |
| Broche 21 | D2 — Digital data bit 2 |
| Broche 22 | D3 — Digital data bit 3 |
| Broche 23 | D4 — Digital data bit 4 |
| Broche 24 | D5 — Digital data bit 5 |
| Broche 25 | D6 — Digital data bit 6 |
| Broche 26 | D7 — Digital data bit 7 |
| Broche 27 | D8 — Digital data bit 8 |
| Broche 28 | D9 — Digital data bit 9 |
| Broche 29 | D10 — Digital data bit 10 |
| Broche 30 | D11 — Digital data bit 11 |
| Broche 31 | D12 — Digital data bit 12 |
| Broche 32 | D13 — Digital data bit 13 |
| Broche 33 | D14 — Digital data bit 14 |
| Broche 34 | D15 — Digital data bit 15 (MSB) |
| Broche 35 | DVDD — Digital supply (+2.7 V to +5.25 V) |
| Broche 36 | DGND — Digital ground |
| Broche 37 | NC — Not connected (per datasheet) |
| Broche 38 | NC — Not connected (per datasheet) |
| Broche 39 | NC — Not connected (per datasheet) |
| Broche 40 | NC — Not connected (per datasheet) |
| Broche 41 | NC — Not connected (per datasheet) |
| Broche 42 | NC — Not connected (per datasheet) |
| Broche 43 | NC — Not connected (per datasheet) |
| Broche 44 | NC — Not connected (per datasheet) |
| Broche 45 | NC — Not connected (per datasheet) |
| Broche 46 | NC — Not connected (per datasheet) |
| Broche 47 | NC — Not connected (per datasheet) |
| Broche 48 | NC — Not connected (per datasheet) |
| Broche 49 | NC — Not connected (per datasheet) |
| Broche 50 | NC — Not connected (per datasheet) |
| Broche 51 | NC — Not connected (per datasheet) |
| Broche 52 | NC — Not connected (per datasheet) |
| Broche 53 | NC — Not connected (per datasheet) |
| Broche 54 | NC — Not connected (per datasheet) |
| Broche 55 | NC — Not connected (per datasheet) |
| Broche 56 | NC — Not connected (per datasheet) |
| Broche 57 | NC — Not connected (per datasheet) |
| Broche 58 | NC — Not connected (per datasheet) |
| Broche 59 | NC — Not connected (per datasheet) |
| Broche 60 | NC — Not connected (per datasheet) |
| Broche 61 | NC — Not connected (per datasheet) |
| Broche 62 | NC — Not connected (per datasheet) |
| Broche 63 | NC — Not connected (per datasheet) |
| Broche 64 | EP — Exposed pad - tie to AGND for thermal dissipation |
Applications typiques
MAX11046BECB+T convient pour 6 applications: Three-Phase Power-Line Monitoring, Multi-Axis Vibration Analysis, Industrial Process Control & DCS, Multi-Channel Data Acquisition Systems, Motor Control & Drive Feedback, Medical Patient Monitoring.
Three-Phase Power-Line Monitoring
The MAX11046BECB+T is purpose-built for three-phase power-line monitoring where simultaneous sampling of all phase voltages and currents is mandatory. Its 8-channel architecture samples three phase voltages plus three phase currents plus neutral voltage and current in lockstep at 250 ksps/ch, eliminating inter-channel skew that would corrupt power-quality calculations such as harmonic distortion (THD) up to the 50th harmonic. The true bipolar ±5 V input connects directly to PT/CT secondary outputs without external signal conditioning, while 16-bit resolution (152 uV LSB) yields power measurement accuracy better than 0.1 percent across the full industrial temperature range -40 C to +85 C.
Recommandé
Multi-Axis Vibration Analysis
The MAX11046BECB+T samples up to 8 accelerometers or piezoelectric sensors simultaneously, capturing phase-coherent vibration data from multi-axis structures (e.g., turbine bearings, robotic arms, automotive drivelines). With 4 MHz T/H bandwidth and 250 ksps/ch throughput, the device captures vibration signatures well above 100 kHz without aliasing, while 16-bit resolution preserves modal-analysis dynamic range. The 20 MHz parallel interface streams all 8 channels into a DSP or FPGA in real time, and the exposed-pad TQFP-EP-64 keeps junction temperature low in confined industrial enclosures with sustained 100 percent sampling duty cycle.
Recommandé
Industrial Process Control & DCS
Distributed control systems (DCS) and process-control PLCs use the MAX11046BECB+T to digitize 4-20 mA current loops or 0-10 V process signals from up to 8 sensors simultaneously. The bipolar ±5 V input range accepts both current-loop shunts and voltage-mode transducers, while the high-impedance >1 Gohm inputs do not load high-impedance sensors. Industrial-grade -40 C to +85 C operation tolerates factory floor environments, and the 20 MHz bidirectional parallel interface glues directly into FPGA-based control loops with deterministic latency. Internal ±20 mA input clamps protect against field-wiring faults and ESD transients during cabinet commissioning.
Recommandé
Multi-Channel Data Acquisition Systems
Modular data-acquisition (DAQ) cards use the MAX11046BECB+T as the core simultaneous-sampling ADC for oscilloscope-style digitizers, audio analyzers, and sonar receivers. Its 8 simultaneous T/H inputs guarantee channel-to-channel skew below one aperture (4 ns typical), which is critical for time-of-arrival measurements in sonar and ultrasonic non-destructive testing. The internal 4.096 V bandgap reference removes the cost and PCB area of an external reference, while an external reference can be driven into REFIN for calibration-traceable measurements. The TQFP-EP-64 footprint allows direct PCB integration into PXI, VXI, and PCIe-based DAQ modules.
Recommandé
Motor Control & Drive Feedback
Field-oriented control (FOC) loops for AC induction, BLDC, and PMSM motors use the MAX11046BECB+T to sample phase currents and DC-bus voltages synchronously at the PWM switching frequency. The 250 ksps/ch rate supports PWM frequencies up to 250 kHz with multiple samples per PWM cycle for current-reconstruction accuracy, while 16-bit resolution captures low-speed torque-ripple details that 12/14-bit ADCs miss. The bipolar ±5 V inputs interface directly to shunt-resistor current-sense amplifiers (e.g., MAX44284) without level shifting. Industrial -40 C to +85 C rating handles under-hood and motor-cabinet thermal stress.
Recommandé
Medical Patient Monitoring
Multi-channel patient monitors use the MAX11046BECB+T to simultaneously sample ECG (electrocardiogram), EEG (electroencephalogram), EMG (electromyogram), and SpO2 photoplethysmography channels with deterministic inter-channel timing. The simultaneous-sampling architecture preserves phase relationships across bio-potential leads, which is essential for accurate vectorcardiogram and 12-lead ECG interpretation. The 16-bit resolution (152 uV LSB at ±5 V) resolves sub-millivolt bio-signals, and the high-impedance inputs (>1 Gohm) do not load skin-electrode interfaces. Industrial temperature rating supports wearable and bedside monitoring equipment operating continuously in clinical environments.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MAX11046BECB+T — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MAX11046BECB+ | MAX11045BECB+T | MAX11047BECB+T | MAX11044BECB+T | AD7606BSTZ |
|---|---|---|---|---|---|---|
| Package | 64-TQFP-EP (10x10 mm) | 64-TQFP-EP (10x10 mm) - same | 64-TQFP-EP (10x10 mm) - same | 64-TQFP-EP (10x10 mm) - same | 64-TQFP-EP (10x10 mm) - same | 64-LQFP (10x10 mm) - same footprint |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 bit | 16 bit | 14 bit | 16 bit | 14 bit | 16 bit |
| Sampling Rate per Channel | 250 ksps | 250 ksps | 250 ksps | 500 ksps | 250 ksps | 200 ksps |
| Number of Channels | 8 | 8 | 8 | 8 | 8 | 8 |
| Input Range | ±5 V (bipolar) | ±5 V (bipolar) | ±5 V (bipolar) | ±5 V (bipolar) | ±5 V (bipolar) | ±10 V or 0-5 V (selectable) |
| Internal Reference | 4.096 V | 4.096 V | 4.096 V | 4.096 V | 4.096 V | 2.5 V |
| Digital Interface | 20 MHz parallel | 20 MHz parallel | 20 MHz parallel | 20 MHz parallel | 20 MHz parallel | Parallel/Serial selectable |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Principaux différenciateurs
- True bipolar ±5 V inputs with internal clamps - no external signal conditioning required (vs AD7606BSTZ)
- 250 ksps/ch simultaneous sampling across 8 channels - inter-channel skew below 4 ns (vs MAX11040 (14-bit, 8-channel, 250 ksps/ch))
- Higher throughput option in same footprint (MAX11047) (vs MAX11046 vs MAX11047BECB+T)
Notes de conception
Solder the exposed pad (EP) directly to a continuous AGND copper pour on the top layer, with at least 8 thermal vias (0.3 mm drill, 0.5 mm pitch) stitching to inner AGND planes. This provides both thermal dissipation (theta_JA typically 28 C/W with proper layout) and the lowest-impedance analog ground return. Place the AGND-to-DGND star-ground connection directly under the EP, never at the connector.
Decouple each AVDD and DVDD pin with a 0.1 uF X7R ceramic capacitor as close as possible (within 2 mm) to the IC pin, plus a 10 uF bulk ceramic on each supply rail. AVDD and DVDD may be tied together at +5 V if no level translation is required, but routing them separately allows independent filtering. A ferrite bead between AVDD and DVDD reduces digital switching noise coupling into analog samples.
Route the analog input traces (AIN0-AIN7) as short, guarded differential pairs if possible, with the AGND guard trace on both sides to reduce digital crosstalk. Keep digital interface lines (D0-D15, CS, RD, WR, CONVST) on the opposite side of the package, and avoid routing them parallel to analog inputs. Place the REFIN/REFOUT bypass capacitors (10 uF + 0.1 uF) within 5 mm of the reference pins to minimize reference noise pickup.
Drive CONVST with a low-jitter CMOS clock source (less than 100 ps cycle-to-cycle jitter) to preserve channel-to-channel sampling accuracy. The 20 MHz parallel interface requires matched trace lengths (less than 25 mm mismatch) to avoid data-bus skew; source-terminate D0-D15 with 33 ohm series resistors if the bus runs longer than 50 mm. Add 10 kohm pull-ups on CS, RD, and WR to prevent spurious conversion triggers during FPGA/DSP initialization.
Estimated: With all 8 channels sampling simultaneously at 250 ksps and driving a 20 MHz parallel bus, total power dissipation is approximately 400 mW (5 V x 80 mA), so the TQFP-EP-64 must be soldered to AGND copper to keep junction temperature below 125 C. Do not exceed ±25 V at any AIN pin even though internal ±20 mA clamps protect downstream; external series resistors (1 kohm) are recommended for sensor leads that may carry fault voltages. Never float the EP - this degrades thermal performance and AC ground reference.
Informations de conformité
RoHS and REACH compliant per Analog Devices product page; industrial -40 C to +85 C grade. Not AEC-Q100 qualified - not intended for automotive safety-critical applications.
