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Analog Devices Inc./Maxim Integrated MAX1422ECM+TD
- Part No.:
- MAX1422ECM+TD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
MAX1422ECM+TD.pdf
- Description:
- IC ADC 12BIT PIPELINED 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,096
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Product details
Overview
MAX1422ECM+TD from Maxim Integrated is a 12-bit, 20Msps, 3.3V analog-to-digital converter with fully differential pipelined architecture, internal 2.048V bandgap reference, 67dB SNR at 5MHz input, and 400MHz small-signal input bandwidth-designed for medical ultrasound imaging and IF digitization where low power (137mW) and high dynamic performance are critical.
For engineers reviewing the MAX1422ECM+TD datasheet, MAX1422ECM+TD pinout, MAX1422ECM+TD application, or MAX1422ECM+TD equivalent, this page delivers verified technical context, real-world timing behavior, package-validated pin functions, and two confirmed alternative ADCs for imaging and communications signal chains requiring stable 12-bit sampling at ≤20Msps.
Technical Context
The MAX1422ECM+TD implements a 12-stage, fully differential pipelined ADC architecture with digital error correction to ensure no missing codes and ±0.5 LSB DNL across -40°C to +85°C. Each stage contributes 1-bit resolution, and total latency is fixed at seven clock cycles with sampling on the rising edge of CLK.
Its wideband track-and-hold amplifier supports both differential and single-ended analog inputs, with common-mode level set by CML (AVDD/2 = 1.65V) and full-scale range defined by VREFP–REFN = 1.024V (±5%). Reference operation includes internal, buffered external, and unbuffered external modes-each with distinct biasing and bypassing requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output levels for precision amplitude quantization in baseband digitization. |
| Sampling Rate | 20Msps - supports Nyquist-limited input frequencies up to 10MHz; validated at fCLK = 20MHz with 50% duty cycle. |
| SNR | 67dB (typ) at fIN = 5MHz - enables >10.5 ENOB for clean signal reconstruction in CCD pixel processing. |
| Input Bandwidth | 400MHz (-3dB, small-signal) - allows faithful capture of fast-rising transients in radar pulse digitization. |
| Power Dissipation | 137mW (typ) at 20Msps - achieves low thermal load in space-constrained medical imaging modules. |
| Reference Voltage | Internal 2.048V bandgap - sets full-scale range to ±1.024V differentially; temperature coefficient ±100ppm/°C. |
| Operating Temp | -40°C to +85°C - qualified for extended industrial environments including portable diagnostic equipment. |
Pinout & Package
MAX1422ECM+TD is housed in a 7mm × 7mm × 1.4mm, 48-pin TQFP package with exposed paddle (thermal pad), optimized for high-density PCB layouts in signal acquisition systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INP / INN | Differential analog input pair | Accepts ±1.024V differential signal; 400MHz bandwidth enables direct RF/IF sampling without external amplification. |
| CLK / CLK | Differential clock inputs | Sample triggered on rising CLK edge; supports single-ended drive (CLK only) with CLK bypassed to AGND via 0.1µF. |
| D0–D11 | Parallel CMOS-compatible outputs | Offset binary format, 12-bit bus; three-state controlled by OE; 7-cycle pipeline latency from sample to valid data. |
| REFP / REFN / CML | Reference I/O terminals | Set full-scale range: REFP = CML + 0.512V, REFN = CML – 0.512V; CML = AVDD/2 = 1.65V in internal reference mode. |
| PD | Shutdown control | Logic-high entry into shutdown mode draws only 20µA total supply current-critical for power-gated imaging subsystems. |
| OE | Output enable | Logic-high places D0–D11 in high-impedance state; allows shared bus interfacing without external buffers. |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential pipelined architecture | 12-stage design with digital error correction ensures monotonicity and ±0.5 LSB DNL over full temperature range. |
| Flexible reference configuration | Supports internal (2.048V), buffered external, or unbuffered external reference-enabling calibration and range adaptation. |
| Low-jitter aperture timing | 2ps typical aperture jitter limits SNR degradation per 20·log₁₀(π·fIN·tAJ)-critical for >5MHz input fidelity. |
| Two-tier power-down | Reference shutdown reduces IAVDD by 2mA; full shutdown draws only 20µA-ideal for burst-mode acquisition. |
| Wideband T/H amplifier | 400MHz small-signal and 150MHz large-signal bandwidth allow direct digitization of IF signals up to 70MHz. |
Applications
| Medical Ultrasound Imaging | CCD Pixel Processing |
|---|---|
Use Scenario: Digitizing echo return signals from phased-array transducers operating at 2–15MHz center frequencies. IC Role / Device Role / Timing Role: Primary ADC capturing time-of-flight data with <2ps aperture jitter to preserve axial resolution. Use Value: 67dB SNR and 74dBc SFDR maintain contrast-to-noise ratio in B-mode image reconstruction. |
Use Scenario: High-speed readout of linear or area CCD sensors in industrial inspection cameras. IC Role / Device Role / Timing Role: Synchronized 20Msps sampling aligned to pixel clock; offset binary output simplifies FPGA interface logic. Use Value: 12-bit resolution and ±2 LSB INL ensure accurate grayscale linearity across 4096 intensity levels. |
| Data Acquisition Systems | Radar IF Digitization |
Use Scenario: Portable multichannel DAQ for vibration analysis and spectral monitoring in predictive maintenance gear. IC Role / Device Role / Timing Role: Low-power ADC enabling battery-operated operation; PD pin enables sleep between trigger events. Use Value: 137mW consumption at 20Msps extends runtime vs. comparable 12-bit converters consuming >200mW. |
Use Scenario: Digitizing 70–150MHz IF outputs from superheterodyne radar receivers before DSP downconversion. IC Role / Device Role / Timing Role: Wideband T/H captures transient pulses with minimal droop; differential input rejects common-mode noise from RF front-end. Use Value: 400MHz input bandwidth and -77dBc two-tone IMD support clean digitization of adjacent channel interference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, 20Msps ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1421ECM+ | 40Msps sampling rate, identical pinout and reference architecture; higher power (210mW typ). | Required when system clock exceeds 20MHz or IF bandwidth >10MHz demands oversampling. | Select MAX1421ECM+ only if sustained >20Msps throughput is mandatory; verify thermal margin due to +73mW dissipation increase. |
| ADS8325IPFBT | SAR architecture (not pipelined); 250kSPS max, 16-bit resolution, SPI interface, no internal reference. | Suitable for low-speed precision sensor readout-not for real-time imaging or IF sampling. | Choose ADS8325IPFBT only for DC-coupled, low-bandwidth applications where resolution >12-bit and serial interface are priorities. |
Compared with MAX1422ECM+TD, MAX1421ECM+ offers double the speed at cost of higher power and thermal load, while ADS8325IPFBT trades speed and parallel interface for precision and simplicity-making MAX1422ECM+TD the optimal balance for 20Msps imaging and communications digitization.
Availability
MAX1422ECM+TD is available at Aetrix Electronics and suitable for medical ultrasound imaging, CCD pixel processing, radar IF digitization, data acquisition, and IF/baseband digitization requiring stable component supply across extended industrial temperature ranges.
Supply support for MAX1422ECM+TD includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs high-performance analog and mixed-signal ICs for demanding signal-chain applications, with emphasis on precision, speed, and power efficiency.
The MAX1422ECM+TD belongs to Maxim's high-speed precision ADC product line, engineered specifically for low-power, wideband digitization in medical imaging, test equipment, and communications infrastructure.
FAQ
What is the guaranteed operating temperature range for MAX1422ECM+TD?
The MAX1422ECM+TD is specified for continuous operation from -40°C to +85°C, meeting extended industrial requirements. This rating is validated per the Absolute Maximum Ratings table and Electrical Characteristics test conditions, with all key parameters-including SNR, INL, and SFDR-guaranteed across the full range.
Does MAX1422ECM+TD require external decoupling capacitors, and if so, what values?
Yes, MAX1422ECM+TD requires specific decoupling: AVDD and DVDD each need a 10µF + 1µF + 0.1µF + 1nF parallel network to their respective ground planes; REFP, REFN, REFIN, and CML each require 0.22µF || 1nF to AGND. These values are mandated in the "Grounding, Bypassing and Board Layout" section to maintain 67dB SNR and prevent digital switching noise coupling.
Can MAX1422ECM+TD operate with a single-ended analog input?
Yes, MAX1422ECM+TD supports single-ended inputs on INP with INN tied to CML (1.65V), though differential drive is preferred. The datasheet confirms this configuration in the "Analog Input and Reference Configuration" section and notes that differential mode improves SFDR and suppresses even-order harmonics-especially above 5MHz.
What is the pipeline latency of MAX1422ECM+TD, and how does it affect system timing?
The MAX1422ECM+TD has a fixed pipeline latency of seven clock cycles from sample initiation (rising CLK edge) to valid D0–D11 output. This deterministic delay is critical for time-sensitive applications like ultrasound beamforming, where synchronization between transmit pulses and digitized echoes must be precisely managed in FPGA or ASIC logic.
How does the internal reference of MAX1422ECM+TD behave under varying supply voltage?
The internal 2.048V bandgap reference of MAX1422ECM+TD exhibits ±100ppm/°C temperature drift and maintains stability across AVDD = 3.138V to 3.465V, as shown in Typical Operating Characteristic plot toc23. PSRR is ±1mV/V, meaning a ±5% AVDD change induces <±0.016V shift in VREFIN-well within the ±5% full-scale tolerance.
MAX1422ECM+TD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 48-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 20M
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 3.138V ~ 3.465V
- Voltage - Supply, Digital:
- 2.7V ~ 3.63V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1422ECM+TD FAQ
1.How can I place an order for MAX1422ECM+TD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1422ECM+TD on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX1422ECM+TD reliable?
The price and inventory of MAX1422ECM+TD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1422ECM+TD is usually 5 days.
3.What payment methods are accepted for MAX1422ECM+TD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1422ECM+TD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1422ECM+TD?
MAX1422ECM+TD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1422ECM+TD order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX1422ECM+TD?
For technical support, including MAX1422ECM+TD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1422ECM+TD requirements.
6.How does Aetrix verify that MAX1422ECM+TD is sourced from the original manufacturer or authorized distributors?
All MAX1422ECM+TD products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX1422ECM+TD meets industry standards.
7.What is the process for return or replacement of MAX1422ECM+TD?
All MAX1422ECM+TD units undergo pre-shipment inspection (PSI). If there is an issue with MAX1422ECM+TD, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX1422ECM+TD part is unused and in its original packaging.
Return procedure for MAX1422ECM+TD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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