MAX1169CCUD+ - 16-Bit 58.6ksps SAR ADC, I2C, 14-TSSOP | Maxim Integrated
Teilenummer: MAX1169CCUD+ ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $10.2 | $10,20 |
| 10 | $9.05 | $90,50 |
| 100 | $7.65 | $765,00 |
| 500 | $6.45 | $3.225,00 |
| 1.000 | $5.55 | $5.550,00 |
MAX1169CCUD+ Übersicht
A SAR ADC is a successive-approximation-register analog-to-digital converter, a subtype of data converter that performs a binary search against the analog input using an internal DAC and comparator to resolve each bit in N clock cycles for N-bit resolution. SAR ADCs sit under the broader hierarchy of analog-to-digital converter -> data converter -> signal chain IC -> mixed-signal semiconductor. The MAX1169's 16-bit SAR architecture delivers zero-latency single-shot conversion, deterministic latency, and excellent DC accuracy, making it the preferred topology for multiplexed data acquisition, sensor readouts, and instrumentation front ends where the absence of pipeline delay simplifies firmware timing.
Key features of the MAX1169CCUD+ include a true-differential analog input pair, an integrated +4.096V reference (also externally overridable), 8 analog input channels via an on-chip analog multiplexer, automatic hardware power-down that drops the supply current to a few microamps between conversions, an external clock option for applications requiring deterministic sampling, and a wide +2.7V to +5.25V analog supply range that simplifies interfacing with both 3.3V and 5V microcontrollers. The internal reference provides a stable conversion scale without the cost and board area of an external precision reference.
The device architecture combines a capacitive-charge-distribution DAC, a high-gain comparator, and a successive-approximation register clocked by either the internal 4 MHz oscillator or an external clock. The I2C interface includes a 7-bit slave address and supports standard read/write, sequential read, and write/read combined transactions for efficient register programming and data retrieval. Power consumption at 58.6 ksps is approximately 1.2 mW from a 5V supply, falling to under 10 µW in the automatic power-down state.
Typical applications include portable and battery-powered data loggers, 4 mA to 20 mA industrial sensor front ends, loop-powered transmitters, medical instrumentation front ends, weigh scales, panel meters, and any precision monitoring application requiring 16-bit resolution at modest sampling rates. The wide supply range and integrated reference simplify power-tree design in space-constrained modules.
When designing with the MAX1169CCUD+, ensure that the analog and digital grounds are tied at a single star point to avoid ground-loop noise coupling into the reference, use a 0.1 µF ceramic bypass capacitor as close as possible to the AVDD pin, and oversample and average in firmware if you need ENOB beyond the 16-bit headline resolution. The device is part of the pin-compatible MAX1167/MAX1169 family, allowing migration to lower-cost 12-bit variants if 16-bit resolution is not required.
This page synthesizes real-time distributor pricing, drop-in pin-compatible alternatives, and application-level design considerations that are not consolidated on the manufacturer datasheet, providing an information-gain layer for engineers selecting or replacing the MAX1169CCUD+ in precision data-acquisition designs.
Drop-in-Alternativen für MAX1169CCUD+ – 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 MAX1169CCUD+ (gleiche Bauform und Footprint) – abweichend in Resolution, Analog Supply Voltage, Architecture, Operating Temperature Range.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
MAX1169CEUD+
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MAX1169BEUD+
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MAX1069AEUD+
✅ Drop-In✓ Auf Lager
$4.2 / Stück
Datenblatt ansehen →MAX1167CEUD+
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MAX1169CCUD+ Grenzwerte & elektrische Eigenschaften
| Auflösung | 16 bits |
| Architecture | SAR (Successive Approximation Register) |
| Number of Inputs | 1 (single-ended) / 8 via internal MUX |
| Sample Rate (Max) | 58.6 ksps |
| Analog Input Range | 0 V to VREF (single-ended) / ±VREF (differential) |
| Internal Reference Voltage | +4.096 V |
| Internal Clock Frequency | 4 MHz (typ) |
| Analog Supply Voltage (AVDD) | +2.7 V to +5.25 V |
| Digital Supply Voltage (DVDD) | +2.7 V to +5.25 V |
| Digital Interface | I2C-compatible 2-wire, Fast-mode and High-Speed mode |
| Betriebstemperaturbereich | 0 °C to +70 °C (commercial) |
| Gehäuse | 14-pin TSSOP |
| Montageart | Surface Mount |
| RoHS-Status | Compliant |
| Lead-Free | Yes |
| AEC-Q100 Automotive | Not qualified |
MAX1169CCUD+ Pin-Konfiguration
| Pin 1 | AIN0 — Analog input channel 0 |
| Pin 2 | AIN1 — Analog input channel 1 |
| Pin 3 | AIN2/AIN+ — Analog input channel 2 / positive differential input |
| Pin 4 | AIN3/AIN- — Analog input channel 3 / negative differential input |
| Pin 5 | REF — Internal +4.096 V reference / external reference input |
| Pin 6 | AGND — Analog ground |
| Pin 7 | AVDD — Analog supply voltage (+2.7 V to +5.25 V) |
| Pin 8 | DVDD — Digital supply voltage (+2.7 V to +5.25 V) |
| Pin 9 | DGND — Digital ground |
| Pin 10 | SCL — I2C serial clock input |
| Pin 11 | SDA — I2C serial data I/O |
| Pin 12 | ADD0 — I2C slave address select bit 0 |
| Pin 13 | ADD1 — I2C slave address select bit 1 |
| Pin 14 | CNVST — Conversion start / external clock input |
Typische Anwendungen
MAX1169CCUD+ ist geeignet für 6 Anwendungs: Portable Industrial Data Loggers, 4 mA to 20 mA Loop-Powered Sensor Transmitters, Medical Instrumentation Front Ends, Weigh Scales and Precision Panel Meters, Battery-Powered Environmental Sensor Hubs, Programmable Logic Controller (PLC) Analog Input Modules.
Portable Industrial Data Loggers
The MAX1169CCUD+ is a strong fit for portable 4-channel to 8-channel battery-powered data loggers because its automatic power-down drops supply current to under 10 µW between conversions, while 16-bit resolution gives 0.5 mV LSB on a 4.096 V full-scale reference for accurate thermistor, strain-gauge, or process-voltage readouts. Place the IC near the sensor with a 0.1 µF AVDD bypass and route AVDD from a quiet LDO (not the switching node) to keep converter noise below the 16-bit floor. Compared to integrating ADCs the zero-latency SAR conversion lets the MCU trigger a burst of samples synchronously with a logging event without timing-jitter penalties.
Empfohlen
4 mA to 20 mA Loop-Powered Sensor Transmitters
For 4 mA to 20 mA smart-loop transmitters the MAX1169CCUD+ integrates an internal 4.096 V reference, eliminating the external precision reference that would otherwise compete with the 3.6 mA budget headroom after subtracting the loop current. Its wide 2.7 V to 5.25 V supply tolerance allows direct operation from the loop's rectified and regulated supply rail, while the I2C interface lets a companion Cortex-M0 drive the ADC over just two wires, freeing GPIOs for HART modem or display drive. The 58.6 ksps sample rate is comfortably over-specified for process-variable bandwidths under 100 Hz, leaving plenty of margin for oversampling and decimation.
Empfohlen
Medical Instrumentation Front Ends
In medical instrumentation such as bedside patient monitors, infusion pumps, and pulse-oximeter boards, the MAX1169CCUD+ provides the 16-bit ENOB and ±VREF true-differential input needed to resolve microvolt-level bioelectric signals after front-end amplification. The internal 4.096 V reference is sufficient for clinical-grade accuracy when paired with a precision instrumentation amplifier; an external low-noise reference can also be driven onto the REF pin for the most demanding diagnostic channels. The 14-TSSOP package is small enough to fit beside the analog front end without forcing a four-layer board, and the I2C interface reduces MCU pin count to two GPIO lines.
Empfohlen
Weigh Scales and Precision Panel Meters
Weigh scales and bench-top panel meters rely on the MAX1169CCUD+ to digitize load-cell bridge outputs with the noise-free resolution required for 0.01 % FS accuracy at 16 bits. The differential input pair directly accepts the bridge's ±mV/V output, while the integrated 4.096 V reference defines the excitation scale for the bridge driver. The 58.6 ksps throughput is more than adequate for mechanical settling times in static weighing, and the I2C interface simplifies isolation barriers since two optocouplers carry the full data exchange between the sensing side and the display MCU. Compared with 24-bit delta-sigma ADCs the MAX1169 trades a few bits of effective resolution for much lower power and a smaller TSSOP footprint.
Empfohlen
Battery-Powered Environmental Sensor Hubs
Environmental sensor hubs combining temperature, humidity, gas, and airflow sensors use the MAX1169CCUD+ to digitize multiple analog transducer outputs with a single low-power SAR converter. The 8-channel internal multiplexer scans all sensors sequentially while the I2C interface lets a small Cortex-M0+ poll conversion-complete flags and put the ADC into automatic power-down between samples for sub-100 µA average current. The integrated 4.096 V reference eliminates per-channel calibration drift and the 14-TSSOP package is well-matched to small sensor-node boards. Unlike delta-sigma parts the SAR topology avoids input-current transients that can disturb high-impedance electrochemical gas sensors.
Empfohlen
Programmable Logic Controller (PLC) Analog Input Modules
PLC analog-input modules use the MAX1169CCUD+ to digitize 4 mA to 20 mA, 0 V to 10 V, and thermocouple signals at 16-bit resolution across 4 to 8 channels per module. The wide 2.7 V to 5.25 V supply and integrated reference simplify the PLC's isolated analog front-end design, while the I2C interface allows up to two MAX1169 devices per I2C bus for 16-channel modules. The 58.6 ksps aggregate throughput is well-matched to PLC scan times of 1 ms to 10 ms, and the TSSOP-14 footprint drops into standard PLC analog-module layouts. The commercial 0°C to +70°C grade suits control-cabinet environments but not outdoor enclosures; pair with the industrial-grade MAX1168 family for outdoor PLCs.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für MAX1169CCUD+ – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | MAX1169CEUD+ | MAX1169BEUD+ | MAX1069AEUD+ | MAX1167CEUD+ |
|---|---|---|---|---|---|
| Brand | Analog Devices (Maxim Integrated) | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 14-TSSOP | 14-TSSOP (same) | 14-TSSOP (same) | 14-TSSOP (same) | 14-TSSOP (same) |
| Resolution | 16 bits | 16 bits | 16 bits | 14 bits | 12 bits |
| Sample Rate | 58.6 ksps | 58.6 ksps | 58.6 ksps | 58.6 ksps | 58.6 ksps |
| Internal Reference | +4.096 V | +4.096 V | +4.096 V | +4.096 V | +4.096 V |
| Interface | I2C (Fast/HS-mode) | I2C (Fast/HS-mode) | I2C (Fast/HS-mode) | I2C (Fast/HS-mode) | I2C (Fast/HS-mode) |
| Supply Voltage | +2.7 V to +5.25 V | +2.7 V to +5.25 V | +2.7 V to +5.25 V | +2.7 V to +5.25 V | +2.7 V to +5.25 V |
Wichtigste Unterscheidungsmerkmale
- Integrated +4.096 V reference (vs. MAX1167CEUD+)
- True 16-bit ENOB with differential input (vs. MAX1069AEUD+)
- Low-power automatic power-down (vs. MAX1168CEE+)
Designhinweise
Power the AVDD pin from a low-noise LDO rather than the switching converter rail; the MAX1169's internal +4.096 V reference derives from AVDD and any ripple couples directly into the conversion result. Add a 10 µF tantalum in parallel with a 0.1 µF ceramic bypass within 5 mm of the AVDD pin and tie AGND and DGND together at a single star point beneath the IC.
Route the analog input traces as differential pairs and guard them with AGND traces to reject coupled digital switching noise from the I2C bus. Keep the SCL and SDA traces short and series-terminate if the bus length exceeds 50 mm in noisy backplane designs; per Maxim layout guidelines the 14-TSSOP thermal pad (if present) should be soldered to a copper pour tied to AGND for mechanical and thermal stability.
The MAX1169's SAR architecture draws instantaneous charge from the input at the start of each conversion; if the source impedance exceeds 1 kΩ, add a 10 nF to 100 nF ceramic capacitor directly at the AIN pin to absorb the charge kick and avoid gain error. For high-impedance sensors like thermocouples or pH probes use a unity-gain buffer (such as the MAX4238) between the sensor and the AIN pin to prevent settling-time-induced conversion errors.
Do not leave the REF pin floating if you intend to use an external reference; connect it to a low-impedance source or to AGND if unused. When using the internal reference the REF pin should be decoupled with a 10 µF tantalum plus 0.1 µF ceramic per Maxim's datasheet reference design. Watch out for the trailing '+' in the part number: MAX1169CCUD+ is lead-free RoHS-compliant while MAX1169CCUD (no plus) is the older non-RoHS variant still occasionally found in legacy inventory.
Compliance-Informationen
RoHS compliant and lead-free per the '+' suffix in the MPN. AEC-Q100 not qualified; for automotive applications contact Analog Devices about the MAX1168 automotive-grade variant. Halogen-free status and conflict-minerals declaration should be confirmed via the manufacturer's compliance certificate.
