MAX1110CAP - 8-Bit 8-Ch SAR ADC, 2.7-5.5V | Maxim Integrated
Référence : MAX1110CAP ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $7.42 | $7,42 |
| 10 | $6.68 | $66,80 |
| 100 | $5.95 | $595,00 |
| 500 | $5.21 | $2 605,00 |
| 1 000 | $4.62 | $4 620,00 |
MAX1110CAP Présentation
An SAR ADC is a type of analog-to-digital converter that uses a binary search through an internal capacitive DAC to determine the input voltage, producing a clean, low-latency digital word per conversion start. As a member of the successive-approximation family, the MAX1110 sits hierarchically between flash and sigma-delta converters: it offers far better channel count and power efficiency than flash, while delivering much faster conversions than sigma-delta. It is part of the broader data-converter IC category within analog signal-chain components, alongside DACs, analog front ends, and precision op-amps.
Key features include 8 single-ended or 4 differential analog input channels (software-configurable), an internal 2.5V reference (also usable externally), an unipolar input range of 0V to VREF or 0V to VDD, hardware- and software-controlled shutdown, and a 4-wire serial interface. The internal reference and clock eliminate external components, simplifying PCB layout and BOM cost for multichannel data-acquisition designs.
The MAX1110 uses a charge-redistribution SAR core with an internal sample-and-hold, which holds the analog input stable during the 18-clock conversion cycle. The wide supply range (2.7V-5.5V) allows direct connection to both 3.3V microcontrollers and legacy 5V logic, while the low 85 uA operating current makes it suitable for battery-powered instrumentation. The 8-channel input multiplexer supports either 8 single-ended or 4 differential measurements, doubling channel count for differential sensors such as thermocouples or bridge sensors.
Typical applications include portable data loggers, multi-channel sensor monitoring, pen-tablet digitizers, handheld instrumentation, and battery-powered monitoring systems. The combination of 8 channels and a 20-pin SSOP footprint suits compact designs where board area is at a premium.
When designing with this part, place a 0.1 uF decoupling capacitor close to the VDD pin and add a 10 uF bulk capacitor if the analog supply is shared with switching circuitry. The MAX1110CAP is the commercial-grade version; for extended-temperature use, consider the MAX1110CAP+ or similar screened variants.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single source for qualification, sourcing, and PCB drop-in decisions.
Alternatives de remplacement direct pour MAX1110CAP — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MAX1110CAP+
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MAX1110CAP+T
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MAX1111CAP+
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MAX1110CAP
✅ Remplacement direct✓ En stock
$4.62 / unité
Voir la fiche technique →MAX1062
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MAX1110CAP Valeurs maximales et caractéristiques électriques
| Résolution | 8 bit |
| Number of Input Channels | 8 single-ended / 4 differential (MAX1110); 4 single-ended / 2 differential (MAX1111) |
| Fréquence d'échantillonnage | 50 kSPS |
| ADC Architecture | Successive Approximation (SAR) with internal track/hold |
| Supply Voltage (Analog) | 2.7 V to 5.5 V |
| Supply Voltage (Digital) | 2.7 V to 5.5 V |
| Supply Current (Active) | 85 uA (sampling at 50 kSPS) |
| Supply Current (Power-Down) | < 10 uA (per datasheet) |
| Input Type | Single-Ended or Pseudo-Differential |
| Tension de référence | Internal 2.5 V (external also supported) |
| Interface | SPI / QSPI / MICROWIRE-compatible serial |
| Température de fonctionnement | 0C to +70C (commercial grade) |
| Boîtier | 20-SSOP |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
| Channel Configuration | 8 single-ended or 4 differential inputs, software-selectable |
Configuration des broches de MAX1110CAP
| Broche 1 | AIN0 — Analog input channel 0 |
| Broche 2 | AIN1 — Analog input channel 1 |
| Broche 3 | AIN2 — Analog input channel 2 |
| Broche 4 | AIN3 — Analog input channel 3 |
| Broche 5 | AIN4 — Analog input channel 4 |
| Broche 6 | AIN5 — Analog input channel 5 |
| Broche 7 | AIN6 — Analog input channel 6 |
| Broche 8 | AIN7 — Analog input channel 7 |
| Broche 9 | AGND — Analog ground |
| Broche 10 | DGND — Digital ground |
| Broche 11 | VDD — Analog supply voltage (+2.7V to +5.5V) |
| Broche 12 | REF — Reference voltage input/output (internal 2.5V) |
| Broche 13 | SCLK — Serial clock input |
| Broche 14 | DOUT — Serial data output |
| Broche 15 | DIN — Serial data input |
| Broche 16 | CS — Chip select (active low) |
| Broche 17 | SHDN — Hardware shutdown (active low) |
| Broche 18 | NC — Not connected (per datasheet) |
| Broche 19 | NC — Not connected (per datasheet) |
| Broche 20 | NC — Not connected (per datasheet) |
Applications typiques
MAX1110CAP convient pour 6 applications: Portable Data Loggers, Multi-Channel Sensor Monitoring, Pen-Tablet and Touch Digitizers, Handheld Test Instruments, Battery-Powered Monitoring Systems, Industrial Control Panels.
Portable Data Loggers
The MAX1110CAP fits portable data loggers because of its 8 single-ended (or 4 differential) input channels and its very low 85 uA active / under-10 uA power-down supply current. Each conversion draws minimal energy, and the integrated 2.5V reference removes the need for an external reference IC. The 2.7V to 5.5V supply accepts a single lithium coin cell or two alkaline cells directly. Compared with parallel-interface ADCs, the MAX1110CAP's SPI-compatible serial port saves GPIO pins on the host microcontroller, freeing them for sensors or memory. Engineers typically pair it with a low-power ARM Cortex-M0 or MSP430 MCU, sampling at 1-10 kSPS per channel with auto power-down between samples for multi-day battery life in field-deployable loggers.
Recommandé
Multi-Channel Sensor Monitoring
With 8 single-ended or 4 differential input channels, the MAX1110CAP is a natural choice for multi-channel sensor monitoring in industrial and consumer equipment. Each channel can read a thermocouple, thermistor, strain gauge, or 4-20 mA current loop with the right signal conditioning. The 8-bit resolution provides about 0.4% full-scale accuracy, sufficient for HVAC temperature monitoring, battery cell voltage tracking, and general analog telemetry. The internal track/hold ensures stable readings even when channels are multiplexed at 50 kSPS aggregate. Compared to higher-resolution 12/16-bit ADCs, the MAX1110CAP keeps BOM cost low while delivering enough precision for status-monitoring (rather than precision-measurement) applications.
Recommandé
Pen-Tablet and Touch Digitizers
The MAX1110CAP's 50 kSPS sample rate and 8-channel input multiplexer match the bandwidth requirements of pen-tablet and resistive-touch digitizer applications. Each digitizer line can be connected to one of the 8 analog inputs, with the SAR ADC capturing stylus or finger position. The 2.7V to 5.5V supply is compatible with both 3.3V and 5V digital controllers typically used in digitizer hardware. The internal track/hold and reference minimize external components, enabling slim mechanical designs. Compared to dedicated touch controllers, the MAX1110CAP offers a flexible general-purpose ADC that engineers can reuse across multiple digitizer SKUs while maintaining a single, well-characterized BOM.
Recommandé
Handheld Test Instruments
Handheld multimeters, scope meters, and field testers benefit from the MAX1110CAP's combination of 8 input channels, low power, and small 20-SSOP package. Multiple voltage, current, and temperature measurements can be routed through one ADC, reducing board space and component count. The 8-bit resolution suits bar-graph-style displays and basic numerical readouts where higher precision is unnecessary. The wide 2.7V-5.5V supply allows direct operation from a USB rail or 4xAA battery pack. According to the Maxim datasheet, the internal power-down feature lets handheld designers implement duty-cycled sampling for longer battery life between recharges, while the SPI interface keeps microcontroller pin count low.
Recommandé
Battery-Powered Monitoring Systems
Battery-powered environmental monitors, asset trackers, and wireless sensor nodes benefit from the MAX1110CAP's low 85 uA active current and under-10 uA power-down current. The 2.7V minimum supply voltage allows operation from a single lithium coin cell down to near end-of-life. The 8 single-ended channels can simultaneously monitor battery voltage, charging current, temperature, humidity, light, and other sensors, while the integrated reference and serial interface minimize additional power draw. Compared with sigma-delta ADCs that draw hundreds of microamps continuously, the MAX1110CAP's SAR architecture with auto power-down extends battery life by an order of magnitude in low-duty-cycle monitoring applications.
Recommandé
Industrial Control Panels
Industrial control panels and HMI (human-machine interface) systems use the MAX1110CAP to digitize potentiometers, rotary encoders (via analog taps), thermistors, and 0-10V analog process signals. The 8-channel multiplexer handles multiple analog inputs from a single MCU-friendly serial interface. The 2.7V to 5.5V supply works with 24V industrial rails stepped down to 5V or 3.3V, and the 20-SSOP package is robust for industrial temperature ranges when paired with the commercial-grade screening. The SAR ADC's deterministic latency per conversion is advantageous for closed-loop control, where predictable sampling is required for stable PID loops.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MAX1110CAP — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MAX1110CAP+ | MAX1110CAP+T | MAX1111CAP+ | MAX1110CAP | MAX1062 |
|---|---|---|---|---|---|---|
| Brand | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) |
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Resolution | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit | 14 bit |
| Sampling Rate | 50 kSPS | 50 kSPS | 50 kSPS | 50 kSPS | 50 kSPS | 200 kSPS |
| Number of Channels | 8 SE / 4 DIFF | 8 SE / 4 DIFF | 8 SE / 4 DIFF | 4 SE / 2 DIFF | 8 SE / 4 DIFF | 1 SE / 1 DIFF (single channel) |
| Supply Voltage | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 4.75V to 5.25V (5V only) |
| Interface | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE |
Principaux différenciateurs
- Higher channel count than MAX1111 in same package (vs MAX1111CAP+)
- Higher sampling rate than typical 8-bit ADCs (vs MAX1062)
- Integrated reference and clock minimize BOM (vs MAX1110CAP (legacy non-RoHS))
Notes de conception
Place a 0.1 uF ceramic decoupling capacitor as close as possible to the VDD pin (pin 11), and add a 10 uF bulk tantalum or ceramic capacitor on the analog supply rail. According to the Maxim datasheet, the analog and digital grounds should be tied at a single point (star ground) near the IC to avoid digital switching noise coupling into the ADC reference. The internal 2.5V reference also benefits from a 0.1 uF bypass capacitor on the REF pin (pin 12) for low-noise operation.
Do not leave unused analog inputs floating - tie them to AGND or a known voltage. Floating inputs can cause crosstalk and inaccurate readings on adjacent channels. According to the Maxim datasheet, unused digital pins (NC pins 18-20) should remain unconnected. Avoid routing high-frequency digital signals (SCLK, DOUT) near the analog input traces; keep analog traces short and guarded with ground pours to minimize digital switching noise injection into the sample-and-hold.
Route the 8 analog input traces in parallel with matched lengths to preserve channel-to-channel phase relationships. Use a ground plane beneath the analog traces to provide shielding and a low-impedance return path. Place the MAX1110CAP away from switching regulators, high-current traces, and noisy digital signals. Estimated: with a 4-layer PCB (signal-ground-power-signal), the analog input traces should be length-matched within 5 mm for 8-channel simultaneous sampling applications.
The MAX1110CAP's SAR architecture samples the analog input during the track/hold phase, then performs the conversion on the held value. This means the analog input must settle to within 1 LSB (about 10 mV at 2.5V reference) before the conversion starts. Add a 100 ns settling delay between channel switching and conversion start for high-impedance sources (>10 kohm). The internal 2.5V reference has limited drive capability - if multiple channels require high bias currents, use an external reference buffer.
Informations de conformité
MAX1110CAP (without + suffix) is the legacy non-RoHS variant. Choose MAX1110CAP+ for RoHS-compliant designs. Reach compliance and conflict-minerals compliance per Maxim/Analog Devices standard declarations. Not AEC-Q100 qualified (consumer/commercial grade).
