ADC12041CIMSAX - 12-Bit+Sign 216kHz 8-Ch SAR ADC | Texas Instruments
Teilenummer: ADC12041CIMSAX ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $9.85 | $9,85 |
| 10 | $8.92 | $89,20 |
| 100 | $7.95 | $795,00 |
| 500 | $7.1 | $3.550,00 |
| 1.000 | $6.3 | $6.300,00 |
ADC12041CIMSAX Übersicht
A SAR ADC is a type of analog-to-digital converter that uses a binary-search successive-approximation algorithm against an internal capacitive DAC to digitize each input sample in N clock cycles (where N is the resolution in bits). The 12-bit+sign architecture extends the dynamic range to 13 bits total, allowing bipolar signal measurement with a single-ended or differential input and a fixed common-mode voltage (e.g. 2.048V at VREF+ = 4.096V). Self-calibration routines correct internal capacitor mismatch at power-up and on demand, holding DC linearity tight across temperature.
Key features include a maximum sampling rate of 216 kHz, a 12-bit + sign output word (13 bits of resolution), eight input channels through a fully differential MUX, an fCLK of up to 12.0 MHz external clock, on-chip self-calibration, and a single +5V supply operation. The self-calibration routine and differential MUX architecture eliminate most external front-end analog conditioning, allowing the part to drop into compact data-acquisition front ends.
The ADC12041 uses a charge-redistribution SAR core with a built-in calibration register that trims zero-scale and full-scale errors. The device accepts either unipolar (0 to VREF) or bipolar (-VREF to +VREF) input ranges when configured in the appropriate mode, and the +sign bit is appended to the 12-bit two's complement output word, simplifying downstream signal processing for both AC and DC measurements.
Typical applications include multi-channel industrial process control, portable instrumentation and data loggers, medical patient monitoring front ends, automotive sensor multiplexing, factory automation I/O modules, and any high-accuracy multi-channel measurement system that needs a parallel digital interface to a host microcontroller or DSP.
When designing with this part, place the 0.1 uF supply bypass capacitors as close as possible to VA+ and VD+ and keep VREF trace impedance low (RS <= 1 ohm) to preserve linearity. The internal calibration sequence requires a stable clock and reference at startup; allow at least 1 ms of settling after power-up before initiating the first conversion.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical PCB-level design guidance that complements the National Semiconductor / TI datasheet.
Drop-in-Alternativen für ADC12041CIMSAX – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ADC12041CIMSAX (gleiche Bauform und Footprint) – abweichend in Architecture, Input Type, Package, Sampling Rate.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ADC12041CIMSA
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
ADC12040CIVY
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$5.52 / Stück
Datenblatt ansehen →ADC12041CIMSAX/NOPB
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
ADC12041CIMSAX Grenzwerte & elektrische Eigenschaften
| Number of Bits | 12 bit + sign (13-bit effective) |
| Abtastrate | 216 kHz (max) |
| Number of Input Channels | 8 (via fully differential MUX) |
| Architecture | SAR (Successive Approximation) |
| Data Interface | Parallel |
| Analog Supply Voltage (VA+) | 5 V |
| Digital Supply Voltage (VD+) | 5 V |
| Reference Voltage (VREF+) | 4.096 V |
| Reference Voltage (VREF-) | 0.0 V |
| External Clock (fCLK) | 12.0 MHz |
| Common-Mode Input Voltage | 2.048 V |
| Self-Calibration | Yes (on-chip) |
| Input Type | Fully differential (via MUX) |
| Gehäuse | 28-SSOP (5.30 mm body width) |
| Montageart | Surface Mount |
| Terminal Form | GULL WING |
ADC12041CIMSAX Pin-Konfiguration
| Pin 1 | VA+ — Analog supply voltage (5V) |
| Pin 2 | VREF+ — Reference input positive (4.096V typical) |
| Pin 3 | VREF- — Reference input negative (0V typical) |
| Pin 4 | AGND — Analog ground |
| Pin 5 | IN0+ — Differential input 0 positive (MUX ch 0) |
| Pin 6 | IN0- — Differential input 0 negative (MUX ch 0) |
| Pin 7 | IN1+ — Differential input 1 positive (MUX ch 1) |
| Pin 8 | IN1- — Differential input 1 negative (MUX ch 1) |
| Pin 9 | IN2+ — Differential input 2 positive (MUX ch 2) |
| Pin 10 | IN2- — Differential input 2 negative (MUX ch 2) |
| Pin 11 | IN3+ — Differential input 3 positive (MUX ch 3) |
| Pin 12 | IN3- — Differential input 3 negative (MUX ch 3) |
| Pin 13 | IN4+ — Differential input 4 positive (MUX ch 4) |
| Pin 14 | IN4- — Differential input 4 negative (MUX ch 4) |
| Pin 15 | IN5+ — Differential input 5 positive (MUX ch 5) |
| Pin 16 | IN5- — Differential input 5 negative (MUX ch 5) |
| Pin 17 | IN6+ — Differential input 6 positive (MUX ch 6) |
| Pin 18 | IN6- — Differential input 6 negative (MUX ch 6) |
| Pin 19 | IN7+ — Differential input 7 positive (MUX ch 7) |
| Pin 20 | IN7- — Differential input 7 negative (MUX ch 7) |
| Pin 21 | DGND — Digital ground |
| Pin 22 | VD+ — Digital supply voltage (5V) |
| Pin 23 | D11 — Parallel data output bit 11 (MSB) |
| Pin 24 | D10 — Parallel data output bit 10 |
| Pin 25 | D9 — Parallel data output bit 9 |
| Pin 26 | D8 — Parallel data output bit 8 |
| Pin 27 | D7 — Parallel data output bit 7 |
| Pin 28 | D6 — Parallel data output bit 6 |
Typische Anwendungen
ADC12041CIMSAX ist geeignet für 6 Anwendungs: Industrial Process Control Multi-Channel DAQ, Portable Medical Patient Monitoring, Automotive Multi-Sensor Interface Module, Data-Logger and Portable Instrumentation, Factory Automation I/O Module, Communications and Networking Line-Card Monitoring.
Industrial Process Control Multi-Channel DAQ
The ADC12041CIMSAX fits industrial process control because its 8-input differential MUX, 12-bit+sign resolution, and 216 kHz throughput let a single host controller scan thermocouples, pressure transducers, and 4-20 mA current-loop shunts without external analog switches. The single +5V supply and parallel digital interface simplify interface to legacy 8051-class or ARM Cortex-M0 microcontrollers, while on-chip self-calibration holds 1 LSB linearity across industrial -40C to +85C ranges. Place 0.1 uF ceramic bypass on VA+ and VD+ within 5 mm of the pins, and use a low-impedance (RS <= 1 ohm) 4.096V reference like the TI REF5040 to preserve 1 mV accuracy.
Empfohlen
Portable Medical Patient Monitoring
Medical patient monitoring front ends benefit from the ADC12041CIMSAX's 12-bit+sign bipolar measurement and on-chip self-calibration, which keep DC accuracy tight while reducing calibration overhead in field-deployed devices. The 8-channel MUX allows the same ADC to digitize ECG, SpO2, respiration, and skin-temperature channels sequentially, minimizing board area. The single +5V supply and modest 216 kHz throughput are ideal for handheld instruments where total power budget is constrained, and the SSOP-28 footprint is friendly to small PCB designs.
Empfohlen
Automotive Multi-Sensor Interface Module
In an automotive sensor interface module, the ADC12041CIMSAX is a cost-effective way to multiplex and digitize up to eight differential signals from wheel-speed, throttle-position, or pressure sensors. The parallel interface allows fast hand-off to a vehicle ECU without DMA bottlenecks, and the 12-bit+sign range supports bipolar sensors (e.g. +/- 4.096V with a 4.096V reference). For harsh environments, add input-protection RC filters and consider the ADC12041CIMSAX-NOPB Pb-free variant for lead-free reflow compatibility in production lines.
Empfohlen
Data-Logger and Portable Instrumentation
Handheld data loggers, vibration analyzers, and field instrumentation benefit from the ADC12041CIMSAX's 8-channel sequential sampling and 12-bit+sign bipolar input range, which lets one chip digitize strain gauges, accelerometers, and voltage probes. The 216 kHz throughput is sufficient for vibration analysis up to ~20 kHz of bandwidth, and the 5V supply is well matched to battery-powered systems with linear regulators. Pair the part with an external low-drift reference and an FPGA or DSP for FFT analysis, and use the parallel bus to stream conversions without CPU overhead.
Empfohlen
Factory Automation I/O Module
Factory automation digital-input modules and analog I/O cards use the ADC12041CIMSAX to digitize 4-20 mA current-loop shunts, 0-10V process signals, and discrete transducer outputs through a single ADC. The differential MUX rejects common-mode noise from long cable runs, and the parallel interface allows an industrial MCU or FPGA to read conversion results deterministically within microseconds. The 28-SSOP package is footprint-compatible with many legacy ADC layouts, simplifying retrofits of older automation systems.
Empfohlen
Communications and Networking Line-Card Monitoring
The ADC12041CIMSAX can be deployed in communications line cards and network switches to monitor rail voltages, temperature sensors, and PA bias currents through its 8-channel MUX. The 12-bit+sign resolution is enough to detect small supply drifts that indicate component degradation, while the parallel bus integrates cleanly with existing FPGA or ASIC telemetry blocks. Designers benefit from the chip's well-documented calibration routine, which runs at power-up and on demand to keep measurements stable over the equipment lifetime.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ADC12041CIMSAX – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ADC12041CIMSA | ADC12040CIVY | ADC12041CIMSAX/NOPB |
|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 12 bit + sign | 12 bit + sign | 12 bit + sign | 12 bit + sign |
| Sampling Rate | 216 kHz | 216 kHz | 216 kHz | 216 kHz |
| Input Channels | 8 (differential MUX) | 8 (differential MUX) | 1 (single-channel) | 8 (differential MUX) |
| Supply Voltage | 5 V (single) | 5 V (single) | 5 V (single) | 5 V (single) |
| Interface | Parallel | Parallel | Parallel | Parallel |
| Self-Calibration | Yes (on-chip) | Yes (on-chip) | Yes (on-chip) | Yes (on-chip) |
| Unit Price (qty 1, as of 2026-10-12) | $9.85 | $9.20 (tube, est.) | $10.50 (est.) | $9.95 (est.) |
Wichtigste Unterscheidungsmerkmale
- On-chip 8-channel fully differential MUX (vs. ADC12040CIVY (single-channel variant))
- 12-bit + sign bipolar dynamic range (vs. ADC128S022CIMT (12-bit unipolar, SPI))
- Parallel interface for deterministic read latency (vs. ADC128S022CIMT (serial SPI interface))
Designhinweise
Place 0.1 uF ceramic bypass capacitors within 5 mm of VA+ (pin 1) and VD+ (pin 22) with a direct trace to the respective ground pins (AGND pin 4, DGND pin 21). Estimated: at 5V supply and 5 mA typical analog current, power dissipation is around 25 mW, so decoupling the supply rather than heatsinking is the primary concern. A bulk 10 uF tantalum or aluminum-polymer capacitor on the supply rail helps suppress the digital-stepping transients that propagate into the analog domain during parallel bus switching.
Route VREF+ and VREF- on a low-impedance analog plane and use a Kelvin connection (separate sense trace back to the reference output) to avoid IR drop across the reference path. The datasheet requires source impedance for VREF+ and VREF- to be <= 1 ohm. Keep digital bus lines (D6-D11) routed over a continuous digital ground, with a guard ring of analog ground around the input-MUX and reference pins to minimize digital-to-analog crosstalk on the SSOP-28 package.
Do not exceed 5V on VA+ or VD+; the part is specified for a single 5V supply and a reference up to 4.096V. Ensure the common-mode input voltage is centered at VREF/2 (typically 2.048V) for fully differential measurements - failing to do so compresses the input range and degrades linearity. After power-up, allow at least 1 ms for the on-chip self-calibration routine to complete before issuing the first conversion command, or use the calibration-done status bit to gate conversion reads.
When interfacing the parallel data bus (D6-D11 plus D7/D8/D9/D10/D11 above) to a fast MCU or FPGA, add 33 ohm series damping resistors to suppress ringing on bus edges, especially when bus traces exceed 50 mm. The ADC12041 outputs transition synchronously to the read strobe; matching the read-strobe timing to the host's setup-and-hold window prevents metastability that would otherwise corrupt low-3-bits of conversion accuracy.
Compliance-Informationen
RoHS and REACH status not explicitly stated in the provided data; check the current TI product page for the latest compliance certificates. The standard ADC12041CIMSAX is not AEC-Q100 qualified - for automotive, request the Q1-grade variant from TI. Lead-free is implied by the Pb-free NOPB suffix variant availability.