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Analog Devices Inc./Maxim Integrated MAX1122EGK+TD
- Part No.:
- MAX1122EGK+TD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
MAX1122EGK+TD.pdf
- Description:
- IC ADC 10BIT PIPELINED 68QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,434
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Product details
Overview
MAX1122EGK+TD from Maxim Integrated is a 10-bit, 170Msps analog-to-digital converter optimized for high dynamic performance at IF frequencies up to 500MHz. It operates on a single 1.8V supply, consumes 460mW at full rate, achieves 57.5dB SNR at 10MHz and 72dBc SFDR at 100MHz, and targets digital predistortion receivers in cellular base-station transceivers.
For engineers reviewing the MAX1122EGK+TD datasheet, MAX1122EGK+TD pinout, MAX1122EGK+TD application, or MAX1122EGK+TD equivalent, this page delivers verified specifications, LVDS output timing behavior, industrial-temperature QFN-68EP package details, and validated alternative ADCs for wideband RF sampling systems.
Technical Context
The MAX1122EGK+TD employs a fully differential pipelined architecture with on-chip track-and-hold and internal 1.23V bandgap reference. Its clock management circuit includes a duty-cycle equalizer and selectable divide-by-2 function (via CLKDIV), enabling use of up to 340MHz differential LVDS clock inputs while reducing phase noise sensitivity.
Digital outputs are LVDS-compatible across all 10 data bits (D0P/N–D9P/N), plus ORP/ORN out-of-range flags and DCLKP/DCLKN synchronized clock outputs. Output format (two's complement or offset binary) is selected via the T/B control input, and analog input supports AC- or DC-coupled differential operation with 1.25VP-P full-scale range centered at 1.4V common-mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - defines quantization step size and theoretical SNR ceiling (~62dB) |
| Max Sampling Rate | 170Msps - supports Nyquist-limited signal capture up to 85MHz baseband or IF-sampling of multi-hundred-MHz bands |
| SNR @ 10MHz | 57.5dB - enables >9 effective bits (ENOB ≈ 9.2) for high-fidelity digitization in narrowband receivers |
| SFDR @ 100MHz | 72dBc - suppresses spurious tones critical for adjacent-channel interference rejection in LTE/WCDMA systems |
| Power Dissipation | 460mW at 170Msps - balances performance and thermal load in dense RF front-end layouts |
| Analog Input BW | 600MHz full-power bandwidth - preserves signal integrity for wide instantaneous bandwidth applications |
| Supply Voltage | Single 1.8V (AVCC/OVCC) - simplifies power delivery and reduces noise coupling vs. dual-supply ADCs |
Pinout & Package
MAX1122EGK+TD is housed in a 68-pin QFN with exposed pad (EP), specified for -40°C to +85°C operation. The exposed pad must be soldered to AGND for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INP / INN | Differential analog input pair | Accepts 1.25VP-P swing centered at 1.4V common-mode; self-biased via internal 2.2kΩ resistors |
| CLKP / CLKN | Differential LVDS clock inputs | Support 200–500mVP-P drive; internally biased to 1.2V; enable jitter-insensitive sampling at up to 340MHz input |
| D0P/N–D9P/N | LVDS parallel data outputs (10-bit) | Deliver sampled data in user-selectable two's complement or offset binary; require 100Ω differential termination |
| ORP / ORN | Out-of-range flag outputs | Assert high/low when input exceeds ±0.3125V differential swing relative to 1.4V common-mode |
| DCLKP / DCLKN | LVDS clock output pair | Provide synchronized latch clock with 2.1ns delay from CLKP/CLKN; used to capture data in external logic |
| CLKDIV | LVCMOS clock divider control | Pulldown-enabled input: low = divide-by-2 output update rate; high = 1:1 update rate |
| T/B | Output format select | Pulldown-enabled input: low = two's complement; high = offset binary |
| REFIO / REFADJ | Reference I/O and adjustment | REFIO outputs 1.23V internal reference; REFADJ sets full-scale range via external resistor to AGND or REFIO |
Key Features
| Feature | Design Value |
|---|---|
| On-chip track-and-hold + internal reference | Eliminates need for external sample-hold amplifier and precision reference IC, reducing BOM count and layout area |
| Selectable divide-by-2 clock divider | Enables use of lower-jitter clock sources by halving required input frequency, improving system-level SFDR |
| LVDS digital outputs with DCLK | Provides noise-immune, high-speed data transfer compatible with FPGA/ASIC deserializers without level-shifting |
| Full-scale range adjust via REFADJ | Allows fine-tuning of input sensitivity using a single external resistor, supporting gain calibration in production test |
| Out-of-range detection (ORP/ORN) | Flags clipping events in real time, enabling automatic gain control (AGC) loop response in closed-loop RF systems |
Applications
| Cellular Base-Station Digital Predistortion | Cable Head-End Spectrum Monitoring |
|---|---|
Use Scenario: Capturing wideband feedback signals from power amplifier output to correct nonlinear distortion in real time. IC Role / Device Role / Timing Role: High-speed ADC digitizing 100–300MHz IF signals with minimal added noise or spurs to preserve correction accuracy. Use Value: 72dBc SFDR at 100MHz ensures clean error signal acquisition, directly improving ACLR by >3dB in DPD loops. |
Use Scenario: Real-time spectral analysis of DOCSIS upstream channels across 5–85MHz band in head-end receivers. IC Role / Device Role / Timing Role: Wideband sampling ADC feeding FFT engine in FPGA-based spectrum analyzer with 600MHz analog bandwidth. Use Value: 600MHz full-power bandwidth captures entire upstream band without anti-aliasing filter complexity. |
| Radar Antenna Array Digitization | Communications Test Equipment IF Capture |
Use Scenario: Simultaneous digitization of multiple receive channels in phased-array radar front ends operating at L/S-band IFs. IC Role / Device Role / Timing Role: Low-latency, deterministic 170Msps ADC with 9-cycle pipeline delay for coherent channel synchronization. Use Value: 57.5dB SNR at 10MHz and flat response to 500MHz support high-resolution pulse-Doppler processing. |
Use Scenario: Capturing modulated IF waveforms (e.g., 70MHz QAM) in vector signal analyzers for EVM and constellation analysis. IC Role / Device Role / Timing Role: High-linearity ADC providing reference-grade digitization for metrology-grade test equipment calibration. Use Value: ±0.4LSB typical INL and 57.1dB SNR at 100MHz ensure <0.5% measurement uncertainty in amplitude and phase. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1123EGK+ | 210Msps max rate; identical 10-bit resolution, QFN-68EP package, and LVDS interface | Required where >170Msps sampling is needed for wider instantaneous bandwidth or higher IF frequencies | Select when system demands ≥200Msps with no change to PCB layout or driver design |
| MAX1124EGK+ | 250Msps max rate; same pinout and architecture but optimized for highest speed, not lowest power | Suitable for next-generation 5G mmWave test equipment requiring >200MHz real-time bandwidth | Choose for maximum sampling throughput where 460mW power budget allows |
Compared with MAX1122EGK+TD, MAX1123EGK+ offers 23% higher sampling rate with identical interface and layout compatibility, while MAX1124EGK+ extends speed to 250Msps at increased power-both retain the same LVDS output structure and out-of-range monitoring capability for seamless upgrade paths.
Availability
MAX1122EGK+TD is available at Aetrix Electronics and suitable for cellular infrastructure, cable access equipment, and radar subsystems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX1122EGK+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 RF, power, and precision conversion.
The MAX1122EGK+TD belongs to Maxim's high-speed ADC product line, engineered specifically for wideband communications systems requiring excellent SFDR and SNR at IF frequencies up to 500MHz.
FAQ
What is the absolute maximum clock input frequency supported by MAX1122EGK+TD?
The MAX1122EGK+TD accepts differential LVDS clock inputs up to 340MHz when the CLKDIV pin is set low to engage the on-chip divide-by-2 circuit. This allows the use of high-frequency, low-phase-noise clock sources while maintaining optimal aperture jitter performance. At CLKDIV = high, the maximum clock frequency is 170MHz.
Does MAX1122EGK+TD require external reference components?
No-MAX1122EGK+TD integrates a 1.23V bandgap reference and reference-scaling amplifier. With REFADJ tied to AGND via a 1kΩ resistor, the internal reference is active and requires only a 0.1µF capacitor on REFIO to AGND. External references are optional and only needed for custom full-scale range tuning.
How is the output data format selected on MAX1122EGK+TD?
The T/B pin controls output format: logic low selects two's complement, and logic high selects offset binary. The pin has an internal pulldown resistor, so leaving it unconnected defaults to two's complement mode. No external pull-up is required unless offset binary is needed.
What is the latency of MAX1122EGK+TD from sampling edge to valid data output?
The MAX1122EGK+TD has a fixed pipeline latency of nine clock cycles. Data sampled on the rising edge of CLKP appears valid on the rising edge of DCLKP after nine full clock periods. This deterministic latency enables precise timing alignment in FPGA-based digital downconverters and real-time signal processors.
Can MAX1122EGK+TD operate with single-ended analog inputs?
Yes-though differential input is recommended for optimal performance, the MAX1122EGK+TD supports single-ended analog input by AC-coupling the signal to INP and terminating INN to the 1.4V common-mode voltage via a 2.2kΩ resistor. SNR and SFDR will degrade by ~3–5dB compared to differential drive.
MAX1122EGK+TD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 68-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 170M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- LVDS - 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:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 68-QFN (10x10)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1122EGK+TD FAQ
1.How can I place an order for MAX1122EGK+TD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1122EGK+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 MAX1122EGK+TD reliable?
The price and inventory of MAX1122EGK+TD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1122EGK+TD is usually 5 days.
3.What payment methods are accepted for MAX1122EGK+TD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1122EGK+TD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1122EGK+TD?
MAX1122EGK+TD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1122EGK+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 MAX1122EGK+TD?
For technical support, including MAX1122EGK+TD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1122EGK+TD requirements.
6.How does Aetrix verify that MAX1122EGK+TD is sourced from the original manufacturer or authorized distributors?
All MAX1122EGK+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 MAX1122EGK+TD meets industry standards.
7.What is the process for return or replacement of MAX1122EGK+TD?
All MAX1122EGK+TD units undergo pre-shipment inspection (PSI). If there is an issue with MAX1122EGK+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 MAX1122EGK+TD part is unused and in its original packaging.
Return procedure for MAX1122EGK+TD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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