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Analog Devices Inc./Maxim Integrated MAX1446EHJ+T
- Part No.:
- MAX1446EHJ+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-TQFP
- Datasheet:
-
MAX1446EHJ+T.pdf
- Description:
- IC ADC 10BIT PIPELINED 32TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,107
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Product details
Overview
MAX1446EHJ+T from Maxim Integrated is a 10-bit, 60Msps analog-to-digital converter with fully differential input, pipelined architecture, internal 2.048V bandgap reference, and 59.5dB SNR at 20MHz input frequency. It operates from a single 2.7V–3.6V supply, consumes 30mA in normal mode, and supports imaging and communications systems requiring high dynamic performance at low power.
For engineers reviewing the MAX1446EHJ+T datasheet, MAX1446EHJ+T pinout, MAX1446EHJ+T application, or MAX1446EHJ+T equivalent, this page delivers verified specifications, validated pin functions, confirmed use cases in ultrasound/CCD imaging and IF digitization, and two technically documented alternative ADCs for sampling-rate-flexible designs.
Technical Context
The MAX1446EHJ+T implements a 10-stage pipelined ADC architecture with digital error correction to ensure no missing codes and ±1.9LSB INL. Its track-and-hold circuit features 400MHz –3dB input bandwidth and supports both differential and single-ended analog inputs referenced to COM (VDD/2).
Conversion occurs on the falling edge of CLK; output data appears on the rising edge after 5.5 clock cycles of latency. The internal reference system allows three configurations-internal, buffered external, or unbuffered external-with REFP/REFN/COM buffered outputs and ±1% REFOUT accuracy over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - defines quantization step size and dynamic range for baseband/IF signal capture |
| Sampling Rate | 60Msps - enables Nyquist-limited digitization up to 30MHz analog bandwidth |
| SNR @ 20MHz | 59.5dB - determines minimum detectable signal level in high-frequency imaging applications |
| Input Bandwidth | 400MHz (–3dB) - supports wideband RF/IF sampling without external pre-filtering |
| Power Consumption | 30mA @ 3V - enables portable or thermally constrained imaging subsystems |
| Reference Voltage | 2.048V ±1% - provides stable full-scale range for precision offset binary output coding |
| Data Latency | 5.5 clock cycles - fixes deterministic timing budget for synchronous FPGA/DSP interface design |
Pinout & Package
MAX1446EHJ+T is housed in a 32-pin TQFP package (5mm × 5mm), rated for –40°C to +85°C operation. Pin assignments are validated per Maxim's official datasheet Rev 4 (11/08).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN- | Differential analog input pair | Accepts ±1.0V differential signal; supports single-ended via IN-→COM connection |
| CLK | Asynchronous conversion clock input | Falling-edge triggered; requires low-jitter source (<2ps RMS) to preserve 59.5dB SNR |
| PD | Power-down control | High = 5µA shutdown; wake-up time ≤520µs ensures rapid reactivation in burst-mode systems |
| OE | Output enable | Low = enables D9–D0; high = three-state (high-Z) to prevent bus contention |
| D9–D0 | Parallel offset binary outputs | CMOS-compatible; OVDD programmable from 1.7V–3.3V for flexible logic interfacing |
| REFP, REFN, COM | Reference voltage terminals | Buffered outputs defining ±(VREFP–REFN) full-scale range; bypass required per datasheet |
| REFOUT, REFIN | Internal reference I/O | REFOUT = 2.048V; REFIN accepts external reference or connects to REFOUT for scaling |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential pipeline architecture | Enables 400MHz input bandwidth and 73dB SFDR while minimizing layout sensitivity to common-mode noise |
| Digital error correction | Guarantees no missing codes and ±1.0LSB DNL across temperature, eliminating calibration in production |
| Flexible reference configuration | Supports internal, buffered external, or unbuffered external references-enabling ±10% full-scale adjustment or custom voltage ranges |
| 5.5-cycle deterministic latency | Allows precise timing alignment in real-time DSP pipelines without FIFO buffering overhead |
| Low-power shutdown mode | Reduces current to 5µA, enabling duty-cycled operation in battery-powered ultrasound handhelds |
Applications
| Ultrasound Imaging | CCD Imaging |
|---|---|
Use Scenario: Digitizing echo return signals from phased-array transducers operating at 5–15MHz center frequencies. IC Role / Device Role / Timing Role: High-speed ADC capturing baseband I/Q data with 59.5dB SNR to preserve tissue contrast resolution. Use Value: 400MHz input bandwidth eliminates need for external anti-alias filtering before digitization. | Use Scenario: Converting analog pixel outputs from high-resolution linear CCD sensors in industrial inspection cameras. IC Role / Device Role / Timing Role: Synchronizing 60Msps sampling to line-clock timing; delivering offset-binary data to FPGA image buffer. Use Value: 5.5-cycle fixed latency enables deterministic line-scan trigger alignment without software compensation. |
| Baseband & IF Digitization | Digital Set-Top Boxes |
Use Scenario: Direct sampling of 20–30MHz IF signals in cable modem upstream receivers or software-defined radio front ends. IC Role / Device Role / Timing Role: ADC with 73dB SFDR suppressing adjacent-channel interference in multi-carrier QAM systems. Use Value: Internal 2.048V reference ensures stable full-scale range across temperature, reducing DC offset drift in AGC loops. | Use Scenario: Digitizing composite video or component Y/C signals in legacy STB video processing paths. IC Role / Device Role / Timing Role: Low-power 10-bit ADC interfacing to 1.8V/3.3V video decoder ASICs via parallel bus. Use Value: OVDD programmability (1.7V–3.3V) allows direct connection to mixed-voltage SoC domains without level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1444EHJ+ | 40Msps sampling rate; identical 32-pin TQFP package and pinout | Lower throughput suitable for sub-20MHz IF or slower CCD readout | Select when system clock constraints or power budgets require reduced speed without layout change |
| MAX1448EHJ+ | 80Msps sampling rate; same footprint and interface compatibility | Higher bandwidth needed for >40MHz IF sampling or wideband SDR | Choose for future-proofing or upgraded channel capacity where thermal/power margin permits |
Compared with MAX1446EHJ+T, MAX1444EHJ+ trades 20Msps speed for lower power and relaxed clock jitter requirements, while MAX1448EHJ+ extends bandwidth at higher current draw-both retain identical reference, power, and timing architecture for drop-in evaluation.
Availability
MAX1446EHJ+T is available at Aetrix Electronics and suitable for ultrasound imaging systems, CCD-based machine vision platforms, and digital set-top box video digitization requiring stable component supply across extended industrial temperature ranges.
Supply support for MAX1446EHJ+T 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 precision analog, mixed-signal, and power management ICs for demanding industrial, medical, and communications applications.
The MAX1446 product line delivers low-power, high-SNR ADCs optimized for imaging and digital communications systems where dynamic performance and thermal efficiency are critical.
FAQ
What is the maximum analog input frequency supported by the MAX1446EHJ+T?
The MAX1446EHJ+T features a 400MHz –3dB small-signal input bandwidth and full-power bandwidth of 400MHz, allowing it to accurately digitize analog signals up to ~200MHz under undersampling conditions. At baseband, its 60Msps sampling rate supports Nyquist-limited inputs up to 30MHz. Performance metrics like SNR and SFDR are specified up to 50MHz input frequency per datasheet testing.
Does the MAX1446EHJ+T require an external reference voltage?
No-the MAX1446EHJ+T includes an internal 2.048V precision bandgap reference (±1% accuracy, 60ppm/°C TC) that sets the full-scale range. However, it supports three reference modes: internal (default), buffered external (via REFIN), or unbuffered external (REFIN = GND). External referencing is optional and used only when higher accuracy, custom full-scale range, or system-level reference sharing is required.
What is the power-down current consumption of the MAX1446EHJ+T?
In power-down mode (PD = high, OE = high), the MAX1446EHJ+T draws ≤15µA total supply current-comprising ≤4µA from VDD and ≤20µA from OVDD. This ultra-low state enables energy-efficient operation in battery-powered or duty-cycled systems such as portable ultrasound probes, where the MAX1446EHJ+T can be rapidly reactivated within 520µs.
Can the MAX1446EHJ+T interface directly with a 1.8V FPGA I/O bank?
Yes-the MAX1446EHJ+T's digital outputs (D9–D0) are CMOS-compatible and powered by OVDD, which accepts 1.7V–3.3V. When OVDD = 1.8V, VOH ≥ 1.6V and VOL ≤ 0.2V meet standard 1.8V LVCMOS thresholds. No level-shifting circuitry is required, provided the FPGA I/O bank is configured for 1.8V operation and load capacitance remains ≤15pF to maintain dynamic performance.
What does "EHJ" signify in the MAX1446EHJ+T part number?
"EHJ" denotes the package and temperature grade: E = extended industrial temperature range (–40°C to +85°C), H = 32-pin TQFP (5mm × 5mm), J = lead(Pb)-free/RoHS-compliant construction. The "+T" suffix indicates tape-and-reel packaging for automated assembly. This variant is distinct from the automotive-grade MAX1446GHJ+, which operates from –40°C to +105°C.
MAX1446EHJ+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-TQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 60M
- 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:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 32-TQFP (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1446EHJ+T FAQ
1.How can I place an order for MAX1446EHJ+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1446EHJ+T 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 MAX1446EHJ+T reliable?
The price and inventory of MAX1446EHJ+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1446EHJ+T is usually 5 days.
3.What payment methods are accepted for MAX1446EHJ+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1446EHJ+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1446EHJ+T?
MAX1446EHJ+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1446EHJ+T 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 MAX1446EHJ+T?
For technical support, including MAX1446EHJ+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1446EHJ+T requirements.
6.How does Aetrix verify that MAX1446EHJ+T is sourced from the original manufacturer or authorized distributors?
All MAX1446EHJ+T 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 MAX1446EHJ+T meets industry standards.
7.What is the process for return or replacement of MAX1446EHJ+T?
All MAX1446EHJ+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1446EHJ+T, 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 MAX1446EHJ+T part is unused and in its original packaging.
Return procedure for MAX1446EHJ+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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