MAX1319ECM+ - 14-Bit 526ksps Parallel ADC | Maxim Integrated
MPN: MAX1319ECM+ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.2 | $11.20 |
| 10 | $10.08 | $100.80 |
| 100 | $8.96 | $896.00 |
| 500 | $8.05 | $4,025.00 |
| 1,000 | $7.2 | $7,200.00 |
MAX1319ECM+ Overview
This device falls within the SAR (Successive Approximation Register) ADC category. A SAR ADC is a precision data converter that uses a binary-search algorithm and an internal sample-and-hold front-end to digitize an analog signal in a fixed number of clock cycles. SAR converters offer deterministic latency, low power, and excellent DC accuracy, and they sit one tier below pipeline ADCs in speed but above delta-sigma converters in latency determinism - making them the workhorse for control-loop, motor-drive, and power-monitoring applications.
Key features of the MAX1319ECM+ include 14-bit resolution, a 526 ksps sampling rate, ±1 LSB INL (typical), and a 0 to +5V analog input range from a single +5V analog supply. The parallel digital interface directly connects to microcontrollers and DSPs with 8-bit or 16-bit data buses, eliminating the timing budget overhead of a serial interface. The MAX1319ECM+ includes an internal 4.096V reference and supports both internal and external reference modes.
The ADC uses a segmented architecture with input protection clamps, an on-chip clock, and a track-and-hold front end. The architecture is optimized for AC and DC performance across the industrial -40C to +85C operating range, with 70 dB SINAD and 84 dB SFDR typical dynamic performance at the maximum sampling rate.
Typical applications include multiphase motor control, power-factor monitoring and correction, power-grid synchronization, vibration and waveform analysis, and industrial process instrumentation. The deterministic conversion latency also suits digital protective relays and UPS controllers.
When designing with this part, populate the supply pins (AVDD, DVDD) with local 0.1uF and 10uF ceramics placed within 5 mm of the pins. Keep analog and digital ground returns separated and joined at a single star point under the exposed paddle.
This page synthesizes distributor pricing, drop-in alternatives drawn from the same pin-compatible MAX1316-MAX1327 family, and practical design notes that complement - but do not replace - the manufacturer datasheet.
Drop-in alternatives for MAX1319ECM+ — 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 MAX1319ECM+ (same form factor and footprint) — differing in Package, Architecture, Digital Interface, Digital Supply Voltage, Operating Temperature Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MAX1319ECM+T
✅ Drop-In✓ In Stock
$9.85 / Unit
View Datasheet →MAX1316ECM+
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MAX1317ECM+
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MAX1318ECM+
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MAX1327ECM+
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$10.4 / Unit
View Datasheet →MAX1319ECM+ Maximum Ratings & Electrical Characteristics
| Resolution | 14 bits |
| Number of Channels | 1 |
| Sampling Rate (max) | 526 ksps |
| Architecture | SAR |
| Input Type | Single-Ended, Pseudo-Differential |
| Input Voltage Range | 0 V to +5 V |
| Analog Supply Voltage | +5 V |
| Digital Supply Voltage | +5 V (3.3 V logic-compatible) |
| SINAD | 70 dB (typical at 526 ksps) |
| SFDR | 84 dB (typical) |
| Internal Reference | 4.096 V |
| Reference Mode | Internal or External |
| Digital Interface | Parallel (8/16-bit bus) |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 48-LQFP (ECM, 7x7 mm) |
| Mounting Type | Surface Mount |
| MSL Level | 1 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
MAX1319ECM+ Pin Configuration
| Pin 1 | AVSS — Analog ground |
| Pin 2 | AGND — Analog ground return |
| Pin 3 | AVDD — +5V analog supply |
| Pin 4 | AIN — Analog input (single-ended) |
| Pin 5 | AIN+ — Positive analog input |
| Pin 6 | REF — Reference bypass / output |
| Pin 7 | REFADJ — Reference adjust input |
| Pin 8 | AVSS — Analog ground |
| Pin 9 | AVDD — +5V analog supply |
| Pin 10 | DVDD — +5V digital supply |
| Pin 11 | DVSS — Digital ground |
| Pin 12 | CS — Chip select (active low) |
| Pin 13 | RD — Read input (active low) |
| Pin 14 | WR — Write input (active low) |
| Pin 15 | HBEN — High-byte enable |
| Pin 16 | INT — Conversion end / interrupt |
| Pin 17 | CONVST — Conversion start |
| Pin 18 | D0 — Data bit 0 (LSB) |
| Pin 19 | D1 — Data bit 1 |
| Pin 20 | D2 — Data bit 2 |
| Pin 21 | D3 — Data bit 3 |
| Pin 22 | D4 — Data bit 4 |
| Pin 23 | D5 — Data bit 5 |
| Pin 24 | D6 — Data bit 6 |
| Pin 25 | D7 — Data bit 7 |
| Pin 26 | D8 — Data bit 8 |
| Pin 27 | D9 — Data bit 9 |
| Pin 28 | D10 — Data bit 10 |
| Pin 29 | D11 — Data bit 11 |
| Pin 30 | D12 — Data bit 12 |
| Pin 31 | D13 — Data bit 13 (MSB) |
| Pin 32 | NC — Not connected (per datasheet) |
| Pin 33 | NC — Not connected (per datasheet) |
| Pin 34 | D14 — Data bit 14 (not used in 14-bit mode) |
| Pin 35 | D15 — Data bit 15 (not used in 14-bit mode) |
| Pin 36 | DOUT — Serial data output (unused in parallel mode) |
| Pin 37 | SCLK — Serial clock (unused in parallel mode) |
| Pin 38 | PDL — Power-down low |
| Pin 39 | PDH — Power-down high |
| Pin 40 | EOC — End of conversion |
| Pin 41 | OF — Overflow flag |
| Pin 42 | AVSS — Analog ground |
| Pin 43 | REFIN — External reference input |
| Pin 44 | REFOUT — Internal reference output |
| Pin 45 | AVDD — +5V analog supply |
| Pin 46 | AVSS — Analog ground |
| Pin 47 | DVDD — +5V digital supply |
| Pin 48 | DVSS — Digital ground |
Typical Applications
MAX1319ECM+ is suitable for 6 applications: Multiphase Motor Control, Power-Factor Monitoring and Correction, Power-Grid Synchronization, Vibration and Waveform Analysis, Digital Protective Relays, Industrial Process Instrumentation.
Multiphase Motor Control
The MAX1319ECM+'s 14-bit resolution and 526 ksps throughput make it well suited for sampling phase currents in three-phase PMSM and BLDC motor drives. The SAR architecture delivers deterministic latency (one conversion per INT cycle), which simplifies software timing for field-oriented control loops. The 0-5 V input range accepts current-sense amplifier outputs directly, and the 70 dB SINAD provides the dynamic range needed to detect small phase-current variations during torque ripple compensation. Compared with a 12-bit ADC, the additional 2 bits raise torque-loop SNR by ~12 dB, lowering current ripple-induced torque ripple. Designers can place one MAX1319ECM+ per current-sense resistor or use the dual-channel MAX1318ECM+ variant for compact 2-phase sampling while retaining the same PCB layout.
Recommended
Power-Factor Monitoring and Correction
Three-phase PFC controllers require synchronized AC line voltage and current sampling for true-power calculation and THD optimization. The MAX1319ECM+ samples one of these channels at up to 526 ksps - well above the minimum required for PFC control in 50/60 Hz systems. The internal 4.096 V reference lets engineers omit an external reference for cost-sensitive PFC modules while still achieving 14-bit absolute accuracy. The 48-LQFP package exposes dedicated AGND and DGND pins, which let designers split analog and digital ground returns to control noise coupling from the parallel digital bus to the analog front end. The deterministic SAR latency aligns the ADC sample instant with a hardware trigger from the PFC zero-cross detector.
Recommended
Power-Grid Synchronization
Phase-locked synchronization to the AC mains requires precise measurement of grid voltage zero-crossings and phase angle under distorted (THD-rich) waveforms. The MAX1319ECM+'s 70 dB SINAD at 526 ksps lets a digital PLL track the grid fundamental even when 5th and 7th harmonics are present - critical for grid-tie inverters under modern fault-ride-through requirements. The 14-bit resolution resolves the line voltage into 16384 codes, giving sub-1 mV zero-cross detection when using a 5 V resistive divider. The parallel interface connects directly to a DSP or FPGA that runs the SRF-PLL algorithm without adding serial-interface timing jitter.
Recommended
Vibration and Waveform Analysis
Industrial condition-monitoring systems digitize wide-bandwidth accelerometer signals to extract FFT spectra and detect bearing faults. The MAX1319ECM+ at 526 ksps yields a Nyquist bandwidth of 263 kHz - more than adequate for vibration signatures up to 50 kHz typically seen in bearing and gearbox fault detection. Its 14-bit resolution provides 84 dB SFDR, sufficient for harmonics analysis without spurious-frequency masking. The SAR architecture's excellent DC accuracy also supports slowly-varying static measurements (e.g., load vs deflection) without the 1/f drift seen in delta-sigma ADCs. The LQFP-48 footprint and exposed thermal paddle make it suitable for -40C to +85C industrial deployments.
Recommended
Digital Protective Relays
Numerical protection relays for transmission and distribution lines sample the secondary outputs of current transformers and voltage transformers at 4-32 samples per fundamental cycle. The MAX1319ECM+ at 526 ksps provides 8.7 ksps per channel in a 64-sample-per-cycle 60 Hz protection scheme, with 14-bit resolution to detect sub-1% overcurrent excursions. The parallel digital interface delivers sample data within a single INT cycle, supporting the deterministic trip-time budget required by IEC 60255. The 48-LQFP packaging supports protective relay board layouts where each phase has its own ADC channel sharing the same reference plane.
Recommended
Industrial Process Instrumentation
4-20 mA loop-powered transmitters, weigh scales, and pressure transducers require a stable, low-noise ADC with deterministic timing. The MAX1319ECM+ draws the analog current directly from the 4-20 mA loop after a precision current-sense resistor, scales it into the 0-5 V input range, and produces a 14-bit reading at up to 526 ksps. The internal 4.096 V reference saves an external reference component (BOM reduction) and provides ratiometric measurement stability when paired with an external excitation source. Operating over -40C to +85C industrial range with 48-LQFP surface-mount packaging, the MAX1319ECM+ is well suited to DIN-rail mounted instrumentation requiring IEC 61000-4 EMC immunity.
Recommended
Recommended Products Summary
Engineering reference data for MAX1319ECM+ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MAX1319ECM+T | MAX1316ECM+ | MAX1317ECM+ | MAX1318ECM+ | MAX1327ECM+ |
|---|---|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Package | 48-LQFP (ECM, 7x7 mm) | 48-LQFP (ECM, 7x7 mm) - same | 48-LQFP (ECM, 7x7 mm) - same | 48-LQFP (ECM, 7x7 mm) - same | 48-LQFP (ECM, 7x7 mm) - same | 48-LQFP (ECM, 7x7 mm) - same |
| Resolution | 14 bits | 14 bits | 12 bits (-2 bits) | 12 bits (-2 bits) | 14 bits | 16 bits (+2 bits) |
| Sampling Rate | 526 ksps | 526 ksps | 526 ksps | 526 ksps | 455 ksps aggregate (dual-channel) | 526 ksps |
| Number of Channels | 1 | 1 | 1 | 1 | 2 (dual-channel) | 1 |
| Supply Voltage | +5 V (single) | +5 V | +5 V | +5 V | +5 V | +5 V |
| Internal Reference | 4.096 V | 4.096 V | 4.096 V | 4.096 V | 4.096 V | 4.096 V |
| Pin-to-Pin Compatible | Reference (base part) | Yes - same die, T&R packaging | Yes - same LQFP-48 footprint | Yes - same LQFP-48 footprint | Yes - same LQFP-48 footprint | Yes - same LQFP-48 footprint |
Key Differentiators
- Pin-compatible with the broader MAX1316-MAX1327 family (vs MAX1318ECM+ (dual-channel variant))
- 14-bit resolution with 16-bit family upgrade path (vs MAX1327ECM+ (16-bit variant))
- Internal 4.096 V reference saves BOM cost (vs MAX11164ETC+T (external reference SAR ADC))
Design Notes
The MAX1319ECM+ requires a single +5 V analog supply (AVDD) and a +5 V digital supply (DVDD). Per the datasheet, AVDD and DVDD can be tied together at the PCB level or driven from separate LDOs - the latter is recommended for noisy digital environments. Place a 0.1 uF X7R ceramic decoupling capacitor within 5 mm of each AVDD/DVDD pin, and bulk 10 uF ceramic or tantalum at the regulator output. Reference decoupling (0.1 uF on REF) is critical for low-noise ADC performance - missing or inadequate decoupling can degrade SINAD by 5-10 dB.
Partition the analog and digital ground planes so that AVDD return currents do not flow under the digital bus (D0-D15) or the parallel interface lines (CS, RD, WR). Join analog and digital ground returns at a single star point - typically directly under the exposed paddle of the LQFP-48 package, or at the regulator ground. Keep analog input traces away from digital traces; if crossing is unavoidable, cross at 90 degrees. Route AIN as a matched impedance microstrip with ground-side shielding to limit pickup from the parallel digital bus switching at 20 MHz+ edge rates.
Three pitfalls are common when integrating the MAX1319ECM+. (1) Omitting the REF bypass capacitor; this causes reference noise to dominate ADC output noise - the datasheet requires 0.1 uF X7R on REF. (2) Driving the ADC input outside 0 V to VAVDD; signals below AVSS forward-bias the input protection clamps and inject charge into the sample-and-hold, degrading linearity on the next conversion. (3) Using the wrong supply-decoupling scheme; if DVDD drops below 4.5 V the parallel interface logic may produce short-pulse glitches on D0-D15 that propagate into the controller bus.
The parallel digital bus (D0-D15, CS, RD, INT) transitions simultaneously at rates up to 20 MHz, generating significant simultaneous switching noise (SSN). Estimate: a 16-bit bus switching at 5V with 20 pF per pin loads produces dV/dt = 5V/(2 ns) and current spikes of ~500 mA per line. Route the parallel bus over a continuous digital ground plane; place 33 ohm series damping resistors near the ADC end if bus lengths exceed 50 mm. Terminate the parallel bus in the controller input capacitance to absorb reflections.
Compliance Information
RoHS compliance indicated by + suffix on orderable part number per Maxim/Analog Devices product page. AEC-Q100 not applicable for industrial-grade part. REACH and conflict-mineral declarations not retrieved from provided data.
