MAX11627EEE/V+ - 12-Bit 300ksps 4-Ch ADC | Analog Devices
MPN: MAX11627EEE/V+ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.18 | $7.18 |
| 10 | $6.42 | $64.20 |
| 100 | $5.61 | $561.00 |
| 500 | $4.95 | $2,475.00 |
| 1,000 | $4.32 | $4,320.00 |
MAX11627EEE/V+ Overview
An SAR (Successive Approximation Register) ADC is a type of analog-to-digital converter that uses a binary search algorithm and a precision DAC to converge on the input voltage in N conversion cycles, where N equals the bit resolution. SAR ADCs sit within the broader hierarchy of data-converter ICs (ADC -> data converter -> mixed-signal IC -> semiconductor) and are favored for medium-speed, medium-resolution applications where deterministic latency, low power, and small package size matter more than the very highest sample rates. The MAX11627 family (MAX11626/MAX11627/MAX11628/MAX11629) shares a common core and differs primarily in input channel count: 4 / 4 / 8 / 12 channels respectively.
Key features of the MAX11627EEE/V+ include 300 ksps throughput, an internal 4.096V reference (eliminates external reference IC and saves BOM cost), a 16-deep FIFO that offloads host-processor interrupts, single 5V analog supply operation, low 3.5 mA supply current at full speed, and a hardware-/CSB-only shutdown mode that drops current to < 10 uA. The 16-QSOP footprint is industry-standard for multi-channel SAR ADCs, enabling drop-in placement on existing designs that already use a 16-pin QSOP ADC.
Architecturally, the MAX11627 is built on a CMOS process with a switched-capacitor SAR core, an integrated low-drift bandgap reference, a 4-input analog multiplexer with track-and-hold, and an SPI-compatible mode-0/mode-3 serial interface that supports daisy-chaining of multiple devices on a single bus. The internal FIFO decouples conversion throughput from host read latency, allowing the host to burst-read groups of samples efficiently.
Typical applications include portable industrial data loggers, multi-loop process-control analog input modules, automotive sensor interfaces, battery-cell voltage monitoring, and HVAC controller boards. The 4-channel count matches the typical "current + temperature + pressure + flow" sensor bundle for a single machine subsystem.
When designing with this device, note that the 5V analog rail (AVDD) and the 3V/5V digital rail (DVDD) are independent supplies and must be decoupled separately. The internal reference does not require an external bypass capacitor, but adding 0.1 uF + 10 uF on AVDD and 0.1 uF on DVDD is recommended to keep digital switching noise out of the SAR conversion result.
This page synthesizes distributor pricing, automotive/industrial grade comparison, drop-in QSOP-package alternatives, and practical design notes not found in the bare manufacturer datasheet.
Drop-in alternatives for MAX11627EEE/V+ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MAX11627EEE/V+ (same form factor and footprint) — differing in Resolution, Analog Supply Voltage (AVDD), Architecture, Digital Supply Voltage (DVDD), FIFO Depth.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MAX11627EEE+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX11626EEE+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX11628EEE/V+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX11627EEE/V+ Maximum Ratings & Electrical Characteristics
| Resolution | 12 bit |
| Number of Input Channels | 4 |
| Sampling Rate | 300 ksps |
| ADC Architecture | SAR (Successive Approximation) |
| Input Type | Single-Ended, pseudo-differential (software-configurable) |
| Data Interface | SPI-compatible serial (mode 0 / mode 3) |
| Internal Reference Voltage | 4.096 V |
| Analog Supply Voltage (AVDD) | 4.75 V to 5.25 V (5 V typ) |
| Digital Supply Voltage (DVDD) | 2.7 V to 5.25 V |
| Supply Current (Full Speed) | 3.5 mA typ |
| Shutdown Current | < 10 uA |
| FIFO Depth | 16 conversions |
| Operating Temperature Range | -40 to +85 C (V grade, automotive screened) |
| Package | 16-pin QSOP |
| RoHS Status | Compliant |
| MSL Level | 1 |
| Sample Rate Latency | Deterministic, single-cycle SAR |
MAX11627EEE/V+ Pin Configuration
| Pin 1 | AIN0 — Analog input channel 0 |
| Pin 2 | AIN1 — Analog input channel 1 |
| Pin 3 | AIN2 — Analog input channel 2 |
| Pin 4 | AIN3 — Analog input channel 3 |
| Pin 5 | AGND — Analog ground |
| Pin 6 | AVDD — Analog supply (4.75 V to 5.25 V) |
| Pin 7 | REF — Reference voltage I/O (internal 4.096 V or external drive) |
| Pin 8 | DVDD — Digital supply (2.7 V to 5.25 V) |
| Pin 9 | DGND — Digital ground |
| Pin 10 | DOUT — Serial data output (SPI MISO) |
| Pin 11 | SCLK — Serial clock input |
| Pin 12 | CSB — Active-low chip select / shutdown control |
| Pin 13 | DIN — Serial data input (SPI MOSI) |
| Pin 14 | SSTRB — Serial-strobe output (conversion-complete flag) |
| Pin 15 | NC — Not connected (per datasheet) |
| Pin 16 | NC — Not connected (per datasheet) |
Typical Applications
MAX11627EEE/V+ is suitable for 6 applications: Multi-Channel Industrial Data Logger, Process Control Analog Input Module, Automotive Sensor Interface Board, Battery Cell Voltage Monitor, HVAC Controller Board, Portable Patient Monitor (Non-Critical Care).
Multi-Channel Industrial Data Logger
The MAX11627EEE/V+ suits 4-channel industrial data loggers because its 12-bit 300 ksps SAR core delivers deterministic single-cycle latency for synchronized sampling of thermocouple, pressure, and flow signals. Its integrated 4.096 V reference halves BOM cost by eliminating an external reference IC, while the 16-deep FIFO buffers up to four full channel sweeps before the host must service an interrupt. The /V automotive-grade temperature screening also makes it suitable for outdoor enclosures where -40 to +85 C operation is required.
Recommended
Process Control Analog Input Module
Process control analog input modules (PLC / DCS I/O cards) commonly need 4 to 8 isolated analog inputs sampled at 100 to 300 ksps aggregate rates - a sweet spot for the MAX11627EEE/V+. The 4:1 input multiplexer can be software-cycled to scan four 4-20 mA or 0-10 V transducer outputs through external signal conditioning. The QSOP-16 footprint fits standard 24 mm-wide PLC I/O card pitches, and the SPI interface connects directly to an MCU or FPGA without glue logic.
Recommended
Automotive Sensor Interface Board
The MAX11627EEE/V+ is well-matched to in-cabin and under-hood automotive sensor interface boards where -40 to +85 C automotive screening and 12-bit resolution over 4 channels are required. Inputs can connect to throttle position, pedal position, MAP, and coolant temperature sensors after signal conditioning. The integrated reference simplifies the BOM, the FIFO reduces MCU interrupt load during multi-channel scans, and the QSOP-16 package withstands automotive vibration profiles with proper board staking.
Recommended
Battery Cell Voltage Monitor
Lithium-ion battery management systems stack 4 to 16 cells and require isolated, synchronized voltage measurements. The MAX11627EEE/V+ can scan up to 4 series-stacked cells per chip through external resistor dividers, providing 12-bit resolution (1 mV LSB at 4.096 V reference) sufficient for cell-balancing decisions. The shutdown mode (< 10 uA) is critical for low-quiescent BMS sleep modes, and the SPI interface daisy-chains multiple MAX11627 devices to monitor higher cell counts.
Recommended
HVAC Controller Board
Residential and commercial HVAC controllers monitor 4 to 6 analog inputs: return-air temperature, supply-air temperature, outdoor temperature, humidity (via analog sensor), and static pressure. The MAX11627EEE/V+ provides exactly 4 single-ended inputs at 12-bit resolution, enough for the core temperature triad plus one pressure sensor, with the FIFO allowing the host MCU to read a complete scan in a single SPI burst. The QSOP-16 small footprint leaves board area for relays and triac drivers.
Recommended
Portable Patient Monitor (Non-Critical Care)
Portable patient monitors for non-critical-care telemetry (fitness, sleep, wearable vital-sign tracking) often need 4 analog inputs: heart rate (PPG), respiration (chest strap), skin temperature, and motion (single-axis accelerometer). The MAX11627EEE/V+ delivers 12-bit resolution at 300 ksps which is well above the bandwidth needed for these signals, with the FIFO buffering multi-channel sweeps during motion artifacts. The automotive +1 V temperature screening and QSOP-16 small footprint fit wearable form factors.
Recommended
Recommended Products Summary
Engineering reference data for MAX11627EEE/V+ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MAX11627EEE+ | MAX11626EEE+ | MAX11628EEE/V+ | MAX11629EEE+ | MAX1149BCAP+ |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 16-QSOP | 16-QSOP - same | 16-QSOP - same | 16-QSOP - same | 24-QSOP - different | 20-SSOP - different |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Sampling Rate | 300 ksps | 300 ksps | 300 ksps | 300 ksps | 300 ksps | 140 ksps |
| Input Channels | 4 | 4 | 4 | 8 | 12 | 9 |
| Internal Reference | 4.096 V | 4.096 V | 4.096 V | 4.096 V | 4.096 V | 4.096 V |
| FIFO Depth | 16 conversions | 16 conversions | None (single-result register) | 16 conversions | 16 conversions | None |
| Temperature Grade | Automotive (-40 to +85 C, /V screening) | Industrial (-40 to +85 C) | Industrial (-40 to +85 C) | Automotive (-40 to +85 C, /V screening) | Industrial (-40 to +85 C) | Industrial (-40 to +85 C) |
Key Differentiators
- Integrated 4.096 V reference eliminates external reference IC (vs MAX11626EEE+)
- Automotive-grade /V temperature screening (vs MAX11627EEE+)
- Lower pin-count, lower cost 4-channel option vs 8- or 12-channel family members (vs MAX11628EEE/V+)
Design Notes
The MAX11627EEE/V+ requires independent analog (AVDD, 5 V nominal) and digital (DVDD, 2.7 V to 5.25 V) supplies. Place a 10 uF tantalum plus 0.1 uF ceramic bypass capacitor as close as physically possible to the AVDD and REF pins, and a separate 0.1 uF ceramic on DVDD. The AVDD/DVDD ground returns should join at a single point near the IC to avoid digital switching currents coupling into the analog reference via ground bounce. Estimated: total quiescent power at full 300 ksps is approximately 17.5 mW from AVDD plus a few mW from DVDD at 3.3 V.
Keep analog input traces short and routed over a continuous analog ground plane to minimize capacitive coupling of digital switching noise. Avoid routing digital SPI signals (SCLK, DIN, DOUT, CSB) directly above or below the analog input traces or REF pin - cross only at right angles if layer changes are unavoidable. Place the input RC anti-alias filter (typically 100 ohm + 1 nF for 300 ksps) within 5 mm of each AIN pin to attenuate out-of-band noise before the SAR sampling capacitor.
Do not leave unused analog input pins floating - tie them to AGND or AVDD/2 to prevent the input multiplexer from sampling an undefined voltage and producing erratic LSB codes. When using the internal reference, do not load the REF pin with low-impedance circuitry - the internal reference has limited drive capability and external loading degrades linearity. For ratiometric measurements, switch the setup register to external-reference mode and drive REF from the excitation source to cancel excitation drift.
Compliance Information
RoHS and REACH compliant per Analog Devices product page. The /V+ suffix indicates automotive-grade temperature screening but is not an explicit AEC-Q100 qualification; consult the datasheet for specific automotive compliance documentation. Halogen-free per JEDEC JS709A.
