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Texas Instruments ADS6422IRGCT
- Part No.:
- ADS6422IRGCT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
ADS6422IRGCT.pdf
- Description:
- IC ADC 12BIT PIPELINED 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,986
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Product details
Overview
ADS6422IRGCT from Texas Instruments is a quad-channel, 12-bit, 65 MSPS analog-to-digital converter with serial LVDS interface, internal PLL clock multiplication, and programmable coarse/fine gain. It delivers 68.7 dBFS SINAD at 170 MHz input with 3.5 dB coarse gain and consumes 265 mW per channel. Designed for high-density IF sampling in base-station diversity receivers and medical imaging front-ends.
For engineers reviewing the ADS6422IRGCT datasheet, ADS6422IRGCT pinout, ADS6422IRGCT application, or ADS6422IRGCT equivalent, key selection considerations include its 65 MSPS sampling rate, 2-wire DDR LVDS output architecture, 64-pin QFN package (9 mm × 9 mm), industrial temperature range (–40°C to 85°C), and dual-mode reference support (internal/external).
Technical Context
The ADS6422IRGCT implements a synchronous quad-channel ADC architecture with simultaneous sample-and-hold across all channels. Its internal PLL multiplies the input sampling clock to generate the bit clock for 14× serialization, enabling LVDS data rates below 1 Gbps in 2-wire DDR mode.
It supports both 1-wire and 2-wire LVDS interfaces, configurable via CFG1 pin, and offers programmable data format (MSB/LSB first, 2's complement/offset binary) and fine gain (0–6 dB in 1 dB steps) alongside fixed 3.5 dB coarse gain. Internal reference is 1.0 V to 2.0 V; external reference mode accepts 1.45–1.55 V common-mode voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - guarantees monotonicity and full-scale linearity for precision measurement systems. |
| Sampling Rate | 65 MSPS maximum - enables Nyquist-limited IF sampling up to 32.5 MHz without aliasing in direct-conversion receivers. |
| SINAD @ 170 MHz | 68.7 dBFS at 3.5 dB coarse gain - defines usable dynamic range for wideband signal capture in communications infrastructure. |
| Power per Channel | 265 mW - enables thermal management in dense multi-ADC arrays with shared PCB heat sinking. |
| LVDS Interface | 2-wire DDR with programmable termination - halves data rate vs. 1-wire, easing FPGA receiver design and improving signal integrity. |
| Analog Input Bandwidth | 500 MHz - supports high-frequency IF inputs without external anti-alias filtering in L-band and S-band applications. |
| Aperture Jitter | 250 fs rms - limits SNR degradation at high input frequencies, critical for >100 MHz IF digitization. |
Pinout & Package
ADS6422IRGCT uses a 64-pin QFN package (9 mm × 9 mm) with exposed thermal pad, θJA = 23.17 °C/W (0 LFM), and JEDEC-standard 4-layer PCB layout compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA_P / INA_M INB_P / INB_M INC_P / INC_M IND_P / IND_M |
Differential analog inputs (4 channels) | Accepts ±1 V differential swing (2 VPP); supports ac-coupled sine/LVPECL/LVDS clock inputs down to 400 mVPP. |
| CLKP / CLKM | Differential sampling clock input | Accepts LVPECL, LVDS, LVCMOS, or sine-wave clocks; 5–65 MSPS range; 35–65% duty cycle supported. |
| DCLKP / DCLKM FCLKP / FCLKM |
LVDS serialized data and frame clock outputs | DDR 2-wire interface: DCLK carries bit clock, FCLK marks frame boundaries; both are LVDS with programmable current. |
| DA0_P / DA0_M DB0_P / DB0_M DC0_P / DC0_M DD0_P / DD0_M DA1_P / DA1_M DB1_P / DB1_M DC1_P / DC1_M DD1_P / DD1_M |
LVDS serialized data outputs (2 pairs per channel) | Each channel outputs 12-bit data over two differential pairs; MSB/LSB and 2's complement/offset binary selectable. |
| CFG1–CFG4 SEN, PDN, SCLK, SDATA, RESET |
Configuration and control interface | Parallel pin-programmable (no firmware required) or serial register-configurable; supports global power-down, sync/deskew patterns, and gain/reference selection. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel simultaneous sampling | Enables coherent multi-antenna IF digitization without inter-channel skew-critical for MIMO and beamforming systems. |
| Programmable 3.5 dB coarse + 0–6 dB fine gain | Optimizes SFDR/SNR trade-off dynamically per application; improves spurious-free dynamic range by up to 4 dB at 170 MHz. |
| Internal PLL with bit clock generation | Eliminates need for external clock multiplier IC; reduces BOM count and jitter accumulation in high-speed serial links. |
| Configurable LVDS output current & termination | Allows eye-opening optimization across varying trace lengths and receiver input impedances-improves timing margin in FPGA-based receivers. |
| No external decoupling required for references | Simplifies layout and reduces component count on reference supply lines, enhancing reliability in space-constrained RF modules. |
Applications
| Base-Station IF Receivers | Diversity Receivers |
|---|---|
|
Use Scenario: Digitizing 70–180 MHz IF signals from multiple antenna paths in LTE/FDD-TDD macro base stations. IC Role / Device Role / Timing Role: Quad-channel ADC captures synchronized I/Q samples across four receive chains with <±80 ps channel-to-channel aperture delay variation. Use Value: Enables real-time digital beamforming and interference cancellation using single-chip time-aligned sampling at 65 MSPS. |
Use Scenario: Simultaneous sampling of spatially separated RF paths in wireless infrastructure with rapid signal fading compensation. IC Role / Device Role / Timing Role: Provides deterministic latency (12 clock cycles) and frame-aligned outputs for FPGA-based diversity combining logic. Use Value: Reduces hardware complexity versus discrete dual-channel solutions-lowers PCB area and interconnect jitter in compact RRUs. |
| Medical Ultrasound Imaging | Test & Measurement Equipment |
|
Use Scenario: Front-end digitization of 5–15 MHz echo return signals from phased-array transducers in portable ultrasound systems. IC Role / Device Role / Timing Role: High-SFDR (83 dBc @ 170 MHz) preserves weak tissue boundary reflections amid strong near-field clutter. Use Value: Delivers >10.8 ENOB at 65 MSPS-supports 12-bit precision imaging without post-acquisition dithering or oversampling. |
Use Scenario: High-fidelity waveform capture in portable spectrum analyzers and vector signal analyzers requiring broadband dynamic range. IC Role / Device Role / Timing Role: LVDS serialization with programmable termination ensures clean 1 Gbps-equivalent data transfer to Xilinx Zynq or Intel Cyclone FPGA fabric. Use Value: Eliminates need for external serializer ICs-reduces system-level power by ~350 mW and simplifies clock domain crossing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel, 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS6423IRGCT | 80 MSPS max sampling rate; 300 mW/channel power; 0.2 dB lower SINAD at 170 MHz (68.2 dBFS). | Better suited for higher IF bandwidths (e.g., 3GPP NR mid-band) where 80 MSPS enables wider instantaneous capture. | Select when system requires >65 MSPS but does not need ADS6424's 105 MSPS performance or associated power penalty. |
| ADS6442IRGCT | 14-bit resolution, 65 MSPS, pin-compatible QFN-64; 2.5× higher power (650 mW/channel); supports same LVDS interface modes. | Targeted at applications demanding higher ENOB (>12 bits) such as high-resolution radar pulse analysis or precision instrumentation. | Choose only if 14-bit resolution is mandatory and additional power/thermal budget is available-no drop-in replacement due to different reference and gain scaling. |
Compared with ADS6423IRGCT and ADS6442IRGCT, the ADS6422IRGCT provides optimal balance of power efficiency (265 mW/channel), 65 MSPS capability, and 12-bit fidelity for cost-sensitive, thermally constrained IF sampling-making it ideal for small-cell radios and portable diagnostic equipment.
Availability
ADS6422IRGCT is available at Aetrix Electronics and suitable for base-station IF receivers, medical ultrasound front-ends, and portable test equipment requiring stable component supply across extended production lifecycles.
Supply support for ADS6422IRGCT 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-performance data converters for industrial, communications, and medical markets.
The ADS642X family-including ADS6422IRGCT-is designed specifically for high-density, multi-channel IF sampling in wireless infrastructure and imaging systems, emphasizing low power, LVDS interface simplicity, and robust AC performance across temperature.
FAQ
What is the maximum sampling frequency supported by ADS6422IRGCT?
The ADS6422IRGCT supports a maximum sampling frequency of 65 MSPS, as specified across the full industrial temperature range (–40°C to 85°C). This rate is validated for all AC performance parameters including SINAD, SFDR, and ENOB, and applies to both internal and external reference modes with 3.5 dB coarse gain enabled.
Does ADS6422IRGCT require external decoupling capacitors on its reference pins?
No, ADS6422IRGCT does not require external decoupling capacitors on its reference pins. The device integrates internal reference regulation circuitry that maintains stability without external capacitance-confirmed in the datasheet's "No External Decoupling Required for References" feature list and validated under recommended operating conditions.
How many LVDS data pairs does ADS6422IRGCT use in 2-wire DDR mode?
In 2-wire DDR mode, ADS6422IRGCT uses eight LVDS data pairs: two pairs per channel (DA0/DA1, DB0/DB1, DC0/DC1, DD0/DD1) plus one pair for the bit clock (DCLKP/DCLKM) and one for the frame clock (FCLKP/FCLKM), totaling 10 differential outputs.
Can ADS6422IRGCT operate with an external reference voltage?
Yes, ADS6422IRGCT supports external reference operation. When configured via the SEN pin at (3/8)LVDD or 0 V, it accepts an external reference with common-mode voltage between 1.45 V and 1.55 V, enabling system-level reference sharing and improved channel-to-channel matching in multi-ADC designs.
What is the ADC latency of ADS6422IRGCT, and how is it defined?
The ADS6422IRGCT has a fixed ADC latency of 12 clock cycles from input clock rising edge to valid data at the LVDS outputs, as shown in Figure 1 of the datasheet. This latency is deterministic and independent of interface mode (1-wire/2-wire) or gain setting, simplifying timing closure in FPGA-based receivers.
ADS6422IRGCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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:
- 3V ~ 3.6V
- Voltage - Supply, Digital:
- 3V ~ 3.6V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-VQFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS6422IRGCT FAQ
1.How can I place an order for ADS6422IRGCT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS6422IRGCT 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 ADS6422IRGCT reliable?
The price and inventory of ADS6422IRGCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS6422IRGCT is usually 5 days.
3.What payment methods are accepted for ADS6422IRGCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS6422IRGCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS6422IRGCT?
ADS6422IRGCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS6422IRGCT 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 ADS6422IRGCT?
For technical support, including ADS6422IRGCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS6422IRGCT requirements.
6.How does Aetrix verify that ADS6422IRGCT is sourced from the original manufacturer or authorized distributors?
All ADS6422IRGCT 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 ADS6422IRGCT meets industry standards.
7.What is the process for return or replacement of ADS6422IRGCT?
All ADS6422IRGCT units undergo pre-shipment inspection (PSI). If there is an issue with ADS6422IRGCT, 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 ADS6422IRGCT part is unused and in its original packaging.
Return procedure for ADS6422IRGCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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