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Analog Devices Inc./Maxim Integrated MAX1127EGK
- Part No.:
- MAX1127EGK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
MAX1127EGK.pdf
- Description:
- QUAD 12-BIT ADC, SERIAL LVDS OUT
- Quantity:
- Payment:
- Shipping:
Inventory:3,820
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Product details
Overview
MAX1127EGK from Maxim Integrated is a quad, 12-bit, 65Msps analog-to-digital converter with fully differential inputs, pipelined architecture, and digital error correction. It operates from a 1.7V–1.9V single supply, delivers 69.6dB SNR at 19.3MHz input frequency, and consumes 563mW total power. It serves as the front-end digitizer in ultrasound imaging systems requiring high channel isolation and low power per channel.
For engineers reviewing the MAX1127EGK datasheet, MAX1127EGK pinout, MAX1127EGK application, or MAX1127EGK equivalent, this page provides verified technical context, LVDS/SLVS output timing constraints, channel-specific power-down control, internal/external reference configuration, and validated alternative ADCs for multichannel medical and communications signal acquisition.
Technical Context
The MAX1127EGK implements a 12-bit pipelined ADC architecture with four independent, synchronized channels, each featuring switched-capacitor sampling and digital error correction to maintain linearity across temperature and supply variation. Its on-chip PLL generates the high-speed LVDS serial clock (CLKOUTP/N) from a single-ended CMOS input (CLK), supporting wide-duty-cycle tolerance (20%–80%).
It uses separate power domains-AVDD (analog core), OVDD (LVDS/SLVS output drivers), and CVDD (clock buffer)-to isolate noise-sensitive sections. The internal 1.24V bandgap reference is selectable via REFADJ, and the common-mode output (CMOUT) stabilizes at 0.76V for differential input biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - supports precise amplitude quantization for medical waveform fidelity and spectral analysis. |
| Sampling Rate | 65Msps maximum - enables Nyquist-limited digitization of signals up to 32.5MHz baseband bandwidth. |
| SNR @ 19.3MHz | 69.6dB - ensures >11.3 effective bits (ENOB) for high-fidelity RF/IF sampling in PET and ultrasound. |
| Channel Isolation | -87dB - prevents crosstalk between adjacent channels in multichannel beamforming arrays. |
| Power Consumption | 563mW at full operation; 675µA in shutdown - enables thermal management in compact portable imaging devices. |
| Differential Input Range | ±1.4VP-P - accommodates standard transformer-coupled or balun-driven sensor interfaces without external gain. |
| Reference Option | Internal 1.24V ±100ppm/°C or external - allows calibration-grade accuracy or system-level voltage scaling. |
Pinout & Package
MAX1127EGK is housed in a 68-pin QFN package (10mm × 10mm × 0.9mm) with exposed paddle (EP), rated for -40°C to +85°C operation. The exposed paddle must be externally connected to GND for thermal and electrical performance compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (pins 1,4,7,11,14,17,22,24,65,68) | Ground reference | Multiple dedicated ground pins minimize impedance and reduce switching noise coupling into analog inputs. |
| IN0P/IN0N–IN3P/IN3N (pins 2–3,5–6,12–13,15–16) | Fully differential analog inputs | Four independent input pairs support simultaneous sampling with matched phase/gain (<±1°/<±0.1dB). |
| CLK (pin 23) | Single-ended CMOS clock input | Accepts 4–65MHz clock with ±30% duty cycle tolerance; eliminates need for external clock conditioning. |
| OUT0P/OUT0N–OUT3P/OUT3N (pins 47–48,50–51,38–39,35–36) | LVDS/SLVS serial data outputs | Each channel outputs 12-bit LSB-first serialized data over differential pairs, compatible with FPGA SERDES receivers. |
| CLKOUTP/CLKOUTN (pins 44–45) | LVDS/SLVS serial clock output | Self-aligned clock derived from internal PLL-eliminates skew between data and clock paths in backplane routing. |
| PD0–PD3 & PDALL (pins 53–57) | Per-channel and global power-down controls | Independent channel gating enables dynamic power scaling in time-division multiplexed acquisition systems. |
| REFIO/REFADJ (pins 66–67) | Reference I/O and mode select | REFADJ = GND enables internal 1.24V reference; REFADJ = AVDD selects external reference for system-level calibration. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel synchronization | Simultaneous sampling across all four channels with <±1° phase matching-critical for coherent beamforming in ultrasound transducer arrays. |
| Self-aligning LVDS interface | On-chip PLL generates CLKOUT aligned to data edges, removing inter-pair skew and simplifying PCB layout for FR-4 backplanes up to 30 inches. |
| Flexible reference architecture | Internal 1.24V ±100ppm/°C reference or external reference input-supports both cost-sensitive and metrology-grade system designs. |
| Ultra-low idle power | 675µA global shutdown current-enables rapid wake-up in battery-powered portable diagnostic equipment without reference re-stabilization delay. |
| Test mode support | LVDSTEST pin enables deterministic 12-bit test pattern (000010111101) for signal integrity validation without analog stimulus. |
Applications
| Ultrasound Imaging Systems | PET Detector Modules |
|---|---|
Use Scenario: Digitizing echo return signals from phased-array transducers operating at 2–15MHz center frequencies. IC Role / Device Role / Timing Role: Front-end ADC capturing time-aligned RF samples across 4 parallel receive channels with sub-nanosecond aperture jitter. Use Value: 69.6dB SNR and -87dB channel isolation preserve weak echo amplitude resolution and suppress cross-talk artifacts in B-mode image reconstruction. |
Use Scenario: Converting scintillation pulse amplitudes from photomultiplier tube (PMT) or SiPM arrays in positron emission tomography detectors. IC Role / Device Role / Timing Role: High-speed, low-noise digitizer for energy and timing measurements in coincidence detection circuits. Use Value: 92dBc SFDR at 19.3MHz enables accurate pulse height discrimination and reduces false coincidence errors in time-of-flight PET. |
| Multichannel Communications Receivers | High-Speed Instrumentation Digitizers |
Use Scenario: Sampling IF outputs from quadrature demodulators in wideband software-defined radio (SDR) front ends. IC Role / Device Role / Timing Role: Synchronized quad ADC providing I/Q data streams for real-time digital downconversion and channel bonding. Use Value: Independent PD0–PD3 control allows dynamic channel activation during frequency-hopping or MIMO antenna switching without interrupting active channels. |
Use Scenario: Capturing transient waveforms in automated test equipment (ATE) and oscilloscope front ends requiring >60dB dynamic range. IC Role / Device Role / Timing Role: Precision digitizer with calibrated DC accuracy (±0.4LSB INL) and stable reference for measurement traceability. Use Value: Internal 1.24V reference with ±1% gain error and ±100ppm/°C drift supports uncalibrated lab-grade measurements over industrial temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad, 12-bit, high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1126EGK | Pin-compatible 40Msps version; lower power (320mW), reduced SNR (68.2dB @ 10MHz), same QFN-68 package. | Suitable for cost-optimized or lower-bandwidth ultrasound systems where 65Msps oversampling is not required. | Select when sampling rate headroom is unnecessary and thermal budget is tighter. |
| AD9222BSTZ-65 | Quad 12-bit 65Msps ADC with CMOS parallel outputs; no integrated PLL or LVDS serialization; requires external clock distribution and data capture logic. | Better suited for FPGA-based systems with parallel bus interfaces and custom clock tree design. | Choose when board space permits wider traces and system architecture favors parallel data capture over serialized LVDS. |
Compared with MAX1126EGK, the MAX1127EGK delivers higher sampling throughput and improved dynamic range for demanding imaging applications; compared with AD9222BSTZ-65, it integrates serialization and clock generation-reducing FPGA I/O count and PCB routing complexity-but requires LVDS-capable receiver logic.
Availability
MAX1127EGK is available at Aetrix Electronics and suitable for ultrasound imaging systems, PET detector modules, and multichannel communications receivers requiring stable component supply, long-term lifecycle support, and guaranteed extended temperature (-40°C to +85°C) performance.
Supply support for MAX1127EGK 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, medical, and communications applications.
The MAX1127EGK belongs to Maxim's high-performance data acquisition product line, engineered specifically for multichannel, low-power, high-dynamic-range digitization in portable and fixed medical imaging equipment.
FAQ
What is the maximum sampling rate supported by the MAX1127EGK?
The MAX1127EGK supports a maximum conversion rate of 65Msps, as confirmed in its Electrical Characteristics table under "Maximum Conversion Rate (fSMAX)". This rate is achievable across all four channels simultaneously with full 12-bit resolution and specified dynamic performance (e.g., 69.6dB SNR at 19.3MHz input). The minimum rate is 4Msps, enabling flexible clocking for variable-bandwidth applications. The MAX1127EGK maintains latency of 6.5 clock cycles across this entire range.
Does the MAX1127EGK require an external reference, or does it include an internal one?
The MAX1127EGK includes an internal 1.24V precision bandgap reference, configurable via the REFADJ pin: connect REFADJ to GND to enable internal mode (VREFIO = 1.24V ±100ppm/°C); connect REFADJ to AVDD to disable the internal reference and accept an external reference at REFIO. The MAX1127EGK supports both configurations without hardware change-enabling design reuse across calibration-grade and cost-optimized systems.
How does the MAX1127EGK handle clock duty cycle variations?
The MAX1127EGK incorporates an internal duty-cycle equalizer on its CLK input, accepting duty cycles from 20% to 80% without performance degradation. This is verified in the Electrical Characteristics table ("Clock Duty-Cycle Tolerance: ±30%") and confirmed in typical operating plots (e.g., MAX1127 toc20–toc23), where SNR, SINAD, and SFDR remain stable across 30%–70% duty cycle. This eliminates the need for external clock conditioning circuitry in noisy or variable-frequency clock environments.
What output formats does the MAX1127EGK support, and how are they selected?
The MAX1127EGK supports two output data formats: two's complement (default) and straight binary. Format selection is controlled by the T/B pin (pin 63): drive T/B low for two's complement; drive T/B high for binary. Both formats are delivered LSB-first over the LVDS/SLVS serial interface. The output format choice affects digital signal processing chain alignment-two's complement simplifies signed arithmetic in FPGA-based beamformers, while binary eases integration with legacy unsigned-processing firmware.
Can individual channels of the MAX1127EGK be powered down independently?
Yes-the MAX1127EGK provides per-channel power-down control via PD0, PD1, PD2, and PD3 (pins 53–56), allowing selective deactivation of any channel while others remain operational. Each PDx pin drives the associated channel into low-power state (reducing AVDD current to ~23mA per active channel vs. ~82mA with one active). Global shutdown is enabled via PDALL (pin 57), which powers down all channels and the internal reference, drawing only 300µA. This capability is essential for dynamic power management in time-multiplexed acquisition systems.
MAX1127EGK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 68-VFQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 65M
- Number of Inputs:
- 4
- Input Type:
- Differential
- Data Interface:
- LVDS - Serial
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 4
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 68-QFN (10x10)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1127EGK FAQ
1.How can I place an order for MAX1127EGK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1127EGK 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 MAX1127EGK reliable?
The price and inventory of MAX1127EGK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1127EGK is usually 5 days.
3.What payment methods are accepted for MAX1127EGK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1127EGK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1127EGK?
MAX1127EGK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1127EGK 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 MAX1127EGK?
For technical support, including MAX1127EGK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1127EGK requirements.
6.How does Aetrix verify that MAX1127EGK is sourced from the original manufacturer or authorized distributors?
All MAX1127EGK 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 MAX1127EGK meets industry standards.
7.What is the process for return or replacement of MAX1127EGK?
All MAX1127EGK units undergo pre-shipment inspection (PSI). If there is an issue with MAX1127EGK, 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 MAX1127EGK part is unused and in its original packaging.
Return procedure for MAX1127EGK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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