ADC082S101CIMM - 8-Bit 1Msps 2-Ch SAR ADC | 8-MSOP
Référence : ADC082S101CIMM ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $2.65 | $2,65 |
| 10 | $2.42 | $24,20 |
| 100 | $2.05 | $205,00 |
| 500 | $1.78 | $890,00 |
| 1 000 | $1.49 | $1 490,00 |
| 3 000 | $1.21 | $3 630,00 |
ADC082S101CIMM Présentation
An SAR ADC (Successive Approximation Register Analog-to-Digital Converter) is a precision data-acquisition building block that converts an analog input into a digital code one bit at a time using a comparator and a binary-weighted DAC. It belongs to the medium-speed, medium-resolution converter hierarchy, sitting between flash converters (fastest, lowest resolution) and sigma-delta converters (highest resolution, slowest). SAR ADCs are widely used in industrial control, sensor signal conditioning, and embedded data acquisition because they combine deterministic latency, low latency-to-sample, low power dissipation, and small package size. The ADC082S101CIMM further targets cost-sensitive multi-channel systems by integrating a 2-input mux.
Key features include 1 Msps maximum throughput (fSCLK = 8-16 MHz), 2 single-ended analog inputs with an internal analog mux, an external SCLK-driven serial frame, an active-low CONV/TRAIL signaling convention, and a power-down mode that drops quiescent current to under 1 µA between conversions. The VSSOP-8 footprint makes it one of the smallest 2-channel SAR ADC options on the market, ideal for space-constrained portable instrumentation.
The architecture is a charge-redistribution SAR with a sample-and-hold front-end and a high-speed serial readout engine. The wide 2.7V-5.25V supply range lets the ADC082S101CIMM directly digitize 0-5V transducer signals powered from the same +5V system rail used by logic-class host MCUs, eliminating the need for level shifters.
Typical applications include portable battery-powered instrumentation, industrial process-control sensor digitizers, motor-speed and position feedback loops, handheld multimeter front-ends, optical-sensor signal chains, and consumer-electronics audio/sensor front-ends. The low quiescent current extends battery life in portable systems while the 1 Msps rate handles most closed-loop control needs.
When designing with this device, ensure the analog input drive amplifier is fast enough to settle within the acquisition window (typically 200 ns) - a low-output-impedance op-amp such as the OPA2350 is recommended. Add 0.1 µF and 10 µF decoupling capacitors close to VA and GND pins to keep SAR reference noise out of the conversion result.
Alternatives de remplacement direct pour ADC082S101CIMM — 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 ADC082S101CIMM (même facteur de forme et même empreinte) — différant par Package, Operating Temperature, Architecture, Number of Channels, Input Voltage Range.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ADC082S101CIMMX/NOPB
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ADC082S101CIMM/NOPB
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ADC082S051CIMM/NOPB
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ADC082S021CIMM
✅ Remplacement direct✓ En stock
$2.52 / unité
Voir la fiche technique →ADC081S051CISDX/NOPB
✅ Remplacement direct✓ En stock
$1.62 / unité
Voir la fiche technique →ADC082S101CIMM Valeurs maximales et caractéristiques électriques
| Résolution | 8 bit |
| Number of Channels | 2 |
| Architecture | SAR (Successive Approximation Register) |
| Sample Rate | 500 ksps to 1 Msps |
| Supply Voltage (VA) | +2.7 V to +5.25 V |
| Supply Current (typ at 3V, 1 Msps) | 1.6 mA |
| Power-Down Current (typ) | <1 µA |
| Analog Inputs | 2 single-ended (IN1, IN2) |
| Plage de tension d'entrée | 0 to VA (rail-to-rail) |
| INL (typical) | ±0.2 LSB |
| DNL (typical) | ±0.2 LSB |
| Serial Interface | SPI, QSPI, MICROWIRE, DSP-compatible |
| SCLK Frequency | 8 MHz to 16 MHz |
| Output Data Format | Straight binary |
| Température de fonctionnement | -40 °C to +85 °C (Industrial) |
| Boîtier | 8-pin VSSOP / MSOP-8 (DGK) |
| Type de montage | Surface Mount |
| Niveau MSL | 1 (unlimited floor life) |
| Statut RoHS | Compliant |
Configuration des broches de ADC082S101CIMM
| Broche 1 | VA — Analog supply (+2.7V to +5.25V), tie to pin 2 on PCB |
| Broche 2 | VA — Analog supply, must be tied to pin 1 on PCB |
| Broche 3 | IN1 — Analog input channel 1, single-ended, 0 to VA |
| Broche 4 | IN2 — Analog input channel 2, single-ended, 0 to VA |
| Broche 5 | GND — Analog and digital ground |
| Broche 6 | DOUT — Serial data output, straight binary, MSB first |
| Broche 7 | SCLK — Serial clock input, 8 MHz to 16 MHz |
| Broche 8 | CS — Chip select, active low, frames conversion |
Applications typiques
ADC082S101CIMM convient pour 6 applications: Portable Battery-Powered Instrumentation, Industrial Process Control Sensor Digitizers, Motor Speed and Position Feedback Loops, Handheld Multimeter Front-End Digitizer, Optical Sensor Signal Chains, Consumer Electronics Audio/Sensor Front-Ends.
Portable Battery-Powered Instrumentation
The ADC082S101CIMM fits portable instrumentation because it draws only 1.6 mA typical at 1 Msps / 3V and drops to under 1 µA in power-down mode between conversions per the TI datasheet. The 2 single-ended analog inputs accept rail-to-rail 0-VA signals, so sensor bridges and thermistor dividers powered from the same battery rail digitize directly without external signal conditioning. The 8-VSSOP package minimizes PCB real estate in handheld multimeters and field meters where board area is at a premium. SPI/QSPI compatibility allows direct connection to low-power MCUs like the MSP430. A typical design uses 1.6 mA * 3 V = 4.8 mW active power versus under 3 µW on transitions, enabling multi-year battery life with duty-cycled sampling.
Recommandé
Industrial Process Control Sensor Digitizers
The ADC082S101CIMM suits industrial process-control sensor digitizers because its 1 Msps throughput handles most closed-loop control update rates, while its 2-channel input mux supports redundant or differential sensor reading without external switching. Per the TI datasheet, the device operates from +2.7V to +5.25V and accepts 0-VA inputs, allowing direct connection to 4-20 mA current-loop sense resistors shunted to ground. The ±0.2 LSB INL/DNL ensure repeatable conversion for PLC-style feedback loops. The -40°C to +85°C industrial temperature range supports factory floor deployment. SPI output connects directly to industrial MCUs and PLC front-ends, while the VSSOP-8 footprint allows compact multi-channel PCB layouts.
Recommandé
Motor Speed and Position Feedback Loops
The ADC082S101CIMM fits motor-speed and position feedback loops because its 1 Msps sample rate exceeds typical 10 kHz PWM control loops by 100x, leaving conversion latency available for monitoring applications. Per the TI datasheet, the 2 single-ended inputs can read both encoder analog outputs or Hall-sensor signals from a BLDC motor driver stage, while the SAR architecture provides deterministic per-sample latency - critical for digital control loops where sigma-delta converters' variable group delay would be unacceptable. The 2.7V-5.25V supply range aligns with the +5 V rail common on motor-driver boards, and the VSSOP-8 footprint survives the high-vibration mechanical packaging near vibration-sensitive motion stages.
Recommandé
Handheld Multimeter Front-End Digitizer
The ADC082S101CIMM suits handheld multimeter front-ends because its 8-bit resolution and 1 Msps sample rate cover the dynamic range needed for voltage, current, and resistance measurement modes. Per the TI datasheet, the 0-VA rail-to-rail input accepts divider-attenuated high-voltage signals directly without external op-amp level translation, reducing BOM cost and PCB area in cost-sensitive handheld designs. The 2-channel input allows simultaneous voltage-and-current sensing for power-meter readout modes, while the SPI interface connects to the meter's display-driver MCU. The <1 µA power-down mode preserves battery life when the meter is in standby, and the VSSOP-8 footprint enables the slim form factor expected of modern handheld DMMs.
Recommandé
Optical Sensor Signal Chains
The ADC082S101CIMM fits optical-sensor signal chains because its 2-channel input allows simultaneous reading of photodiode or phototransistor pairs, while its 8-bit resolution is sufficient for ambient-light sensing, color sensing, and proximity-detection applications. Per the TI datasheet, the SAR architecture's deterministic conversion latency eliminates the group-delay variability that would otherwise distort time-of-flight proximity measurements. The 2.7V-5.25V supply range lets the ADC share the same +3.3V or +5V rail as common LED drivers and photodiode bias networks. The SPI output integrates with low-cost display-driver MCUs for smart-lighting and backlight-control applications where the cost-savings must be balanced with reasonable precision.
Recommandé
Consumer Electronics Audio/Sensor Front-Ends
The ADC082S101CIMM suits consumer audio and sensor front-ends because its small VSSOP-8 package enables compact PCB layouts in space-constrained consumer products like smart speakers, IoT sensor hubs, and connected home devices. Per the TI datasheet, the 1 Msps sample rate supports audio-bandwidth sampling for simple voice-activity detection and acoustic-event recognition, while the 2-channel input allows stereo sensing in smart-speaker form factors. The 0-VA rail-to-rail input accepts bias-shifted microphone preamp outputs directly without external signal conditioning, and the SPI interface integrates with low-cost application processors used in cost-sensitive consumer-electronics designs. The power-down mode preserves battery life in portable IoT sensor applications.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ADC082S101CIMM — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ADC082S101CIMMX/NOPB | ADC082S101CIMM/NOPB | ADC082S051CIMM/NOPB | ADC082S021CIMM | ADC081S051CISDX/NOPB |
|---|---|---|---|---|---|---|
| Package | 8-VSSOP (DGK) | 8-VSSOP (DGK) - same | 8-VSSOP (DGK) - same | 8-VSSOP (DGK) - same | 8-VSSOP (DGK) - same | 8-VSSOP (DGK) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit |
| Sample Rate | 500 ksps to 1 Msps | 500 ksps to 1 Msps | 500 ksps to 1 Msps | 200 ksps to 500 ksps | 200 ksps to 500 ksps | 500 ksps to 1 Msps |
| Number of Channels | 2 | 2 | 2 | 2 | 2 | 1 |
| Supply Voltage | +2.7V to +5.25V | +2.7V to +5.25V | +2.7V to +5.25V | +2.7V to +5.25V | +2.7V to +5.25V | +2.7V to +5.25V |
| 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 |
| RoHS Status | Compliant | Compliant | Compliant (NOPB suffix) | Compliant (NOPB suffix) | Compliant | Compliant (NOPB suffix) |
Principaux différenciateurs
- Specified across full 500 ksps to 1 Msps range, not just at one sample rate (vs Generic 8-bit SAR ADCs)
- Single +2.7V to +5.25V supply with rail-to-rail analog inputs (vs Older 5V-only 8-bit SAR ADCs)
- Industry-standard SPI/QSPI/MICROWIRE pinout with active-low CS (vs Proprietary serial interface ADCs)
Notes de conception
Decouple VA with both a 0.1 µF ceramic and a 10 µF tantalum/ceramic capacitor placed as close as possible to the VA pins (pins 1 and 2 must be tied together on the PCB). Use a star-ground topology routing analog and digital grounds back to a single point at the ADC GND pin (pin 5) to prevent digital switching noise from corrupting SAR conversion results. The internal reference of the ADC082S101CIMM draws dynamic current from VA during conversion; insufficient decoupling will appear as mid-scale or full-scale noise spikes in the conversion result.
The input acquisition window for ADC082S101CIMM is approximately 200 ns at 1 Msps per the TI datasheet. The driving op-amp or source impedance must settle to 8-bit accuracy within this window, which means the source impedance should be kept below 1 kΩ or be driven by a wideband buffer such as OPA2350. A common pitfall is using a high-impedance voltage divider directly to drive the ADC - the divider's settling time may exceed the acquisition window, producing distorted LSB codes. Always buffer high-impedance sensor signals before the ADC input.
Route SCLK and DOUT away from the analog input traces and away from the VA supply trace to minimize digital coupling into the analog signal path. Place the 0.1 µF decoupling capacitor within 3 mm of the VA pins, and use a continuous ground plane on layer 2 beneath the ADC. The 8-VSSOP (DGK) exposed thermal pad footprint should be soldered to a grounded copper pour of at least 10 mm² to provide thermal relief and a low-impedance ground return for the device substrate.
Informations de conformité
RoHS compliant per TI product page; /NAD suffix (-NOPB) explicitly designates matte-tin lead-free finish. Halogen-free status not stated in datasheet excerpt - use [DATA_NEEDED] if certification required. AEC-Q100 not qualified - this is a commercial/industrial grade ADC.
