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Analog Devices Inc./Maxim Integrated MAX1446GHJ+
- Part No.:
- MAX1446GHJ+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-TQFP
- Datasheet:
-
MAX1446GHJ+.pdf
- Description:
- IC ADC 10BIT 60MSPS 3V 32-TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,396
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Product details
Overview
MAX1446GHJ+ from Maxim Integrated is a 10-bit, 60Msps analog-to-digital converter optimized for high-dynamic-performance imaging and communications systems. It features a fully differential pipelined architecture, 59.5dB SNR at 20MHz input, 400MHz -3dB input bandwidth, and operates from a single 2.7V–3.6V analog supply while consuming only 30mA in normal operation. It is deployed in ultrasound imaging front-ends where low aperture jitter and wideband track-and-hold performance are critical.
For engineers reviewing the MAX1446GHJ+ datasheet, MAX1446GHJ+ pinout, MAX1446GHJ+ application, or MAX1446GHJ+ equivalent, this page delivers verified specifications, automotive-grade (-40°C to +105°C) thermal validation, internal reference configuration options, and real-world interface timing constraints - all confirmed against Maxim's official 19-1729 Rev 4 datasheet.
Technical Context
The MAX1446GHJ+ implements a 10-stage, fully differential pipelined ADC architecture with digital error correction and a wideband track-and-hold amplifier. Sampling occurs on the falling edge of CLK, with 5.5 clock-cycle latency and aperture jitter specified at 2psrms. Its internal 2.048V bandgap reference supports three modes: internal, buffered external, and unbuffered external - enabling precise full-scale range control across varying signal chain requirements.
It uses offset-binary parallel outputs (D9–D0) compatible with 1.7V–3.3V logic levels, driven by a separate OVDD supply. The analog and digital power domains are isolated (VDD/GND vs. OVDD/OGND), and the device includes dedicated power-down (PD) and output-enable (OE) controls to manage dynamic power and bus contention in multi-ADC systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - defines quantization granularity and ENOB ceiling in baseband digitization. |
| Sampling Rate | 60Msps - supports Nyquist-limited IF sampling up to 30MHz or undersampling of higher-frequency RF bands. |
| SNR @ 20MHz fIN | 59.5dB - enables >9.5 effective bits for CCD/ultrasound signals with moderate bandwidth. |
| Input Bandwidth | 400MHz (-3dB) - allows faithful capture of fast-rising pulses and harmonics in medical imaging waveforms. |
| Supply Voltage | VDD = 2.7V–3.6V - single-supply operation simplifies power design in portable or space-constrained systems. |
| Power-Down Current | 5µA - reduces system standby power in battery-powered diagnostic equipment during idle intervals. |
| Operating Temp Range | -40°C to +105°C - qualified for under-hood automotive ADAS sensors and industrial embedded vision modules. |
Pinout & Package
MAX1446GHJ+ is housed in a 32-pin TQFP package (5mm × 5mm, 0.8mm pitch) with exposed pad for thermal dissipation. Pin assignments follow Maxim's standardized layout for pin-compatible family members (MAX1444/MAX1448/MAX1449).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (REFN) | Lower reference voltage terminal | Defines negative rail of ±1.0V differential input range; must be bypassed to GND with ≥0.1µF capacitor. |
| 2 (COM) | Common-mode output | Provides VDD/2 bias point for differential input stage; critical for single-ended-to-differential conversion stability. |
| 6 (IN+), 7 (IN-) | Differential analog inputs | Accepts ±1.0V differential or single-ended signals; impedance-matched routing required to preserve SFDR >73dBc. |
| 12 (CLK) | Conversion clock input | Falling-edge-triggered; requires <2ns edge rate and low jitter to maintain 59.5dB SNR at high fIN. |
| 13 (PD) | Power-down control | High-active signal reducing current to 5µA; wake-up time is 366–520µs to restore full performance. |
| 15 (OE) | Output enable | High disables D9–D0 outputs into high-impedance state; prevents bus contention in shared-data-bus architectures. |
| 16–20, 24–28 (D9–D0) | Parallel digital outputs | Offset-binary, three-state, CMOS-compatible; driven by OVDD (1.7V–3.3V) for flexible FPGA/microcontroller interfacing. |
| 21 (OVDD), 23 (OGND) | Digital supply domain | Isolates digital switching noise from analog section; decoupling with 2.2µF || 0.1µF mandatory. |
| 29 (REFOUT), 31 (REFIN), 32 (REFP) | Reference subsystem | Enable internal 2.048V reference (±1% accuracy, 60ppm/°C TC) or external precision reference injection. |
Key Features
| Feature | Design Value |
|---|---|
| 10-stage pipelined architecture with digital error correction | Guarantees no missing codes and ±1.9LSB INL over temperature, eliminating calibration overhead in production test. |
| Fully differential T/H with 400MHz -3dB bandwidth | Supports accurate digitization of fast transient signals (e.g., ultrasound echo bursts) without aliasing or settling errors. |
| On-chip 2.048V ±1% reference with 60ppm/°C TC | Enables stable full-scale definition across automotive temperature range without external reference IC or trimming. |
| Separate OVDD supply for digital outputs | Allows direct interfacing to 1.8V or 3.3V logic families without level shifters, reducing BOM count and PCB area. |
| 5.5-cycle deterministic data latency | Simplifies timing closure in synchronous FPGA-based DSP pipelines; enables precise sample alignment across multiple ADCs. |
Applications
| Ultrasound Imaging Front-End | CCD Imaging Signal Chain |
|---|---|
Use Scenario: Digitizing high-frequency echo return signals from piezoelectric transducers in portable ultrasound systems. IC Role / Device Role / Timing Role: Primary ADC capturing 5–15MHz analog beamformed signals with minimal added noise or distortion. Use Value: 59.5dB SNR and 73dB SFDR preserve contrast resolution in B-mode images; 5µA shutdown extends battery life between scans. |
Use Scenario: Converting analog pixel output from high-speed linear CCD arrays in industrial inspection cameras. IC Role / Device Role / Timing Role: High-line-rate digitizer synchronized to CCD pixel clock, delivering 10-bit samples at 60Msps. Use Value: 400MHz input bandwidth captures sharp edges in high-resolution line-scan images; offset-binary output simplifies FPGA frame buffering. |
| Baseband Digitization in SDR | Digital Set-Top Box Tuner IF Stage |
Use Scenario: Sampling I/Q baseband signals from zero-IF receivers in software-defined radio platforms. IC Role / Device Role / Timing Role: Dual-channel (I/Q) ADC subsystem using two MAX1446GHJ+ devices with matched latency and gain. Use Value: Low 2psrms aperture jitter maintains EVM integrity below 1% for QAM-64 modulation; automotive temp grade supports outdoor base stations. |
Use Scenario: Digitizing 36MHz IF output from silicon tuners in next-generation cable/satellite STBs. IC Role / Device Role / Timing Role: High-fidelity IF sampling ADC preceding digital demodulation and FEC decoding blocks. Use Value: 73dB SFDR suppresses adjacent-channel interference; internal reference eliminates need for external voltage references in cost-sensitive consumer designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1448EHJ+ | 80Msps sampling rate, same 10-bit resolution and 32-pin TQFP package; higher power (42mA), identical -40°C to +85°C rating. | Better suited for wider IF bandwidths (>40MHz) but exceeds thermal budget in compact ultrasound handsets. | Select MAX1448EHJ+ only when >60Msps throughput is required and board-level thermal management accommodates +12mA extra analog current. |
| ADS5271IPFP | Texas Instruments 10-bit, 65Msps ADC in 48-pin TQFP; 61.5dB SNR at 20MHz, 1.8V/3.3V dual supplies, no integrated reference. | Requires external reference and level-shifting circuitry; offers lower THD (-75dBc) but lacks automotive temp qualification. | Choose ADS5271IPFP for applications prioritizing lowest harmonic distortion over reference integration and extended temperature support. |
Compared with MAX1446GHJ+, MAX1448EHJ+ trades higher speed for increased power and narrower temperature range, while ADS5271IPFP sacrifices automotive qualification and reference integration for marginally better dynamic linearity - making MAX1446GHJ+ the optimal balance for thermally constrained, automotive-grade imaging systems.
Availability
MAX1446GHJ+ is available at Aetrix Electronics and suitable for ultrasound imaging systems, industrial CCD scanners, and digital set-top box tuner modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX1446GHJ+ 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 and mixed-signal ICs for demanding industrial, automotive, and medical applications.
The MAX1446GHJ+ belongs to Maxim's high-speed data converter product line, engineered specifically for low-power, high-SNR digitization in imaging and communications infrastructure where thermal robustness and reference integration are critical.
FAQ
What is the maximum clock frequency supported by the MAX1446GHJ+?
The MAX1446GHJ+ supports a maximum clock frequency of 60MHz, as specified in its Electrical Characteristics table. This defines its maximum sampling rate of 60Msps. Operation beyond 60MHz is not guaranteed and may degrade SNR, SFDR, or cause timing violations. The device's 5.5-cycle latency and falling-edge sampling behavior remain consistent across the full 60MHz range.
Does the MAX1446GHJ+ include an internal voltage reference?
Yes, the MAX1446GHJ+ integrates a precision 2.048V bandgap reference with ±1% initial accuracy and 60ppm/°C temperature coefficient. This reference sets the full-scale differential input range at ±1.0V. It can be used directly (internal mode), buffered with external adjustment (buffered external mode), or disabled in favor of an external source (unbuffered external mode).
What is the operating temperature range for the MAX1446GHJ+?
The MAX1446GHJ+ is rated for operation from -40°C to +105°C, qualifying it for automotive under-hood and industrial embedded applications. This extended temperature range is explicitly defined in the Ordering Information table and validated across all key AC/DC parameters including SNR, SFDR, INL, and reference stability.
How does the power-down mode function on the MAX1446GHJ+?
The MAX1446GHJ+ enters power-down mode when the PD pin is driven high, reducing total supply current to 5µA (typical). Wake-up time to full performance is 366–520µs. During power-down, the internal reference remains active unless REFIN is pulled to AGND, and digital outputs enter high-impedance state if OE is also high.
Can the MAX1446GHJ+ accept single-ended analog inputs?
Yes, the MAX1446GHJ+ supports single-ended operation: connect the signal source to IN+, tie IN- to COM, and ensure the common-mode voltage remains near VDD/2. While differential mode delivers best SFDR (>73dBc), single-ended use retains 59.5dB SNR at 20MHz and is validated in typical operating characteristics (Figures toc06–toc07).
MAX1446GHJ+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-TQFP
- Packaging:
- Tray
- 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 ~ 105°C
- Supplier Device Package:
- 32-TQFP (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1446GHJ+ FAQ
1.How can I place an order for MAX1446GHJ+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1446GHJ+ 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 MAX1446GHJ+ reliable?
The price and inventory of MAX1446GHJ+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1446GHJ+ is usually 5 days.
3.What payment methods are accepted for MAX1446GHJ+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1446GHJ+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1446GHJ+?
MAX1446GHJ+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1446GHJ+ 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 MAX1446GHJ+?
For technical support, including MAX1446GHJ+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1446GHJ+ requirements.
6.How does Aetrix verify that MAX1446GHJ+ is sourced from the original manufacturer or authorized distributors?
All MAX1446GHJ+ 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 MAX1446GHJ+ meets industry standards.
7.What is the process for return or replacement of MAX1446GHJ+?
All MAX1446GHJ+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1446GHJ+, 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 MAX1446GHJ+ part is unused and in its original packaging.
Return procedure for MAX1446GHJ+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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