ADC3242IRGZ25 - Dual 14-Bit 50MSPS ADC | Texas Instruments
MPN: ADC3242IRGZ25 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.5 | $11.50 |
| 10 | $10.35 | $103.50 |
| 100 | $9.18 | $918.00 |
| 500 | $8.25 | $4,125.00 |
| 1,000 | $7.4 | $7,400.00 |
ADC3242IRGZ25 Overview
An analog-to-digital converter (ADC) is a data-conversion integrated circuit that samples a continuous-time, continuous-amplitude analog input and produces a discrete-time, discrete-amplitude digital output. Within the broader data-converter hierarchy, the ADC3242 belongs to the pipelined-ADC sub-class, which sits between precision successive-approximation (SAR) ADCs (used at low sample rates) and high-speed flash / folding ADCs (used at GHz rates). As a power-management-aware pipeline ADC, the ADC3242 delivers 14-bit resolution at sample rates up to 50 MSPS with significantly lower power than older 14-bit pipelines, placing it in the 'mid-rate precision pipeline' category used in LTE base-station observation paths, multi-carrier GSM receivers, and medical imaging AFE front-ends.
Key features of the ADC3242IRGZ25 include 70.7 dBFS SNR at 50 MSPS with a 30 MHz input, 85 dBc SFDR with a 30 MHz input, ultra-low power at approximately 71 mW per channel at 50 MSPS, an internal 1.8 V LDO for analog supply regulation, an LVDS interface for low-EMI digital output, and per-channel digital gain and offset correction. The device operates from a 1.7 V to 1.9 V AVDD and 1.7 V to 1.9 V DRVDD supply, with a -40C to +85C industrial temperature range.
Design considerations include providing adequate 1.8 V supply decoupling on each analog supply pin and routing LVDS output pairs with 100 ohm differential impedance to minimize reflections on the digital data bus. The ADC3242's internal LDO relaxes external regulator noise requirements, but a clean low-ripple source is still recommended for optimal spurious performance.
Drop-in alternatives for ADC3242IRGZ25 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ADC3242IRGZ25 (same form factor and footprint) — differing in Package, Supply Voltage, Operating Temperature Range, SFDR, SNR.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADC3223IRGZ25
✅ Drop-In✓ In Stock
$11.98 / Unit
View Datasheet →ADC3241IRGZ25
✅ Drop-In✓ In Stock
$15.2 / Unit
View Datasheet →ADC3242IRGZ25 Maximum Ratings & Electrical Characteristics
| Resolution | 14 bit |
| Number of Channels | 2 |
| Sample Rate | 50 MSPS |
| Architecture | Pipelined |
| Input Type | Differential |
| Analog Supply Voltage (AVDD) | 1.7 V to 1.9 V (1.8 V nominal) |
| Digital Supply Voltage (DRVDD) | 1.7 V to 1.9 V (1.8 V nominal) |
| Power Dissipation | 71 mW per channel at 50 MSPS (typical) |
| SNR | 70.7 dBFS at fIN = 30 MHz, fS = 50 MSPS |
| SFDR | 85 dBc at fIN = 30 MHz, fS = 50 MSPS |
| Digital Output Interface | LVDS |
| ENOB | 11.4 bit (typical, fIN = 30 MHz, fS = 50 MSPS) |
| Package | 48-pin VQFN (RGZ), 7x7 mm |
| Operating Temperature Range | -40C to +85C |
| Mounting Type | Surface Mount |
| MSL Level | 3 |
| RoHS Status | Compliant |
ADC3242IRGZ25 48-pin vqfn (rgz), 7x7 mm Pin Configuration Guide
Pin configuration for ADC3242IRGZ25 (48-pin vqfn (rgz), 7x7 mm package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for ADC3242IRGZ25.
Refer to the datasheet for full pin configuration.
Typical Applications
ADC3242IRGZ25 is suitable for 6 applications: Medical Ultrasound Receive Front-End, Communications Observation Receiver, Portable Test and Measurement Instrumentation, Multi-Carrier GSM/EDGE Base Station Receiver, Industrial Vibration Analysis DAQ, Software Defined Radio (SDR) IF Digitizer.
Medical Ultrasound Receive Front-End
The ADC3242IRGZ25's dual 14-bit channels at 50 MSPS with 70.7 dBFS SNR deliver 11.4 ENOB - exactly the dynamic range ultrasound phased-array receivers need for RF-mode imaging at 5-15 MHz IF. The per-channel power of 71 mW keeps the multi-element probe thermal envelope manageable; place one ADC3242 per two receive channels in parallel to scale to 32/64/128-element arrays. The LVDS output couples cleanly into a TI ultrasound AFE like the AFE5808A/AFE5850.
Recommended
Communications Observation Receiver
Wireless observation receivers need 12-14 bit dynamic range at IF frequencies from 30 to 200 MHz and sample rates high enough to capture multi-carrier GSM/LTE/5G NR bands. The ADC3242IRGZ25's 70.7 dBFS SNR, 85 dBc SFDR at 30 MHz input, and LVDS digital interface make it a strong fit for IF-sampling base-station and signal-intelligence receivers. Its internal analog LDO relaxes power-rail noise requirements, while the dual-channel architecture halves board area in dual-polarity antenna configurations.
Recommended
Portable Test and Measurement Instrumentation
Handheld oscilloscope, spectrum analyzer, and logic-analyzer front-ends demand 12-14 bit dynamic range at 50-100 MSPS for accurate waveform capture of baseband and lower-IF signals. The ADC3242IRGZ25's 11.4 ENOB at 30 MHz input and 71 mW per channel power fit portable battery-powered designs where size and efficiency matter. Its compact 7x7 mm VQFN footprint saves PCB area for the digital display and signal-processing sections of compact bench instruments.
Recommended
Multi-Carrier GSM/EDGE Base Station Receiver
GSM/EDGE base-station receivers must digitize the antenna mast signal at 30-65 MSPS with sufficient dynamic range to handle multi-carrier aggregated signals and blocking scenarios. The ADC3242IRGZ25's 14-bit resolution and 70.7 dBFS SNR at 30 MHz input provide comfortable margin in the presence of strong interferers. Running the LVDS interface at 50 MSPS reduces downstream buffering and simplifies timing closure into an FPGA digital down-converter.
Recommended
Industrial Vibration Analysis DAQ
Condition monitoring systems sample vibration and acoustic emissions from rotating machinery at 20-50 kHz sample rates; the ADC3242IRGZ25 provides ample headroom for 14-bit envelope and FFT analysis at 50 MSPS. Its dual channels capture two simultaneous accelerometer channels - one per axis in a triaxial sensor (third axis handled by an additional ADC3242 device or pin-compatible ADC3241 at 25 MSPS). The industrial -40C to +85C temperature range supports factory-floor deployment near motors and variable-frequency drives.
Recommended
Software Defined Radio (SDR) IF Digitizer
Modern SDR radio designs digitize the IF stage directly rather than relying on analog demodulators; this requires 12-14 bit dynamic range at 50-100 MSPS into an FPGA. The ADC3242IRGZ25's LVDS output, 70.7 dBFS SNR at 30 MHz input, and 1.8 V supply align with mid-range SDR designs targeting HF/VHF/UHF receivers and amateur-radio transceivers. The internal LDO on the analog supply eases the power-tree design and reduces external passive component count.
Recommended
Recommended Products Summary
Engineering reference data for ADC3242IRGZ25 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADC3223IRGZ25 | ADC3241IRGZ25 |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 48-VQFN (RGZ) 7x7 mm | 48-VQFN (RGZ) 7x7 mm - same | 48-VQFN (RGZ) 7x7 mm - same |
| Resolution | 14 bit | 12 bit (-2 bit) | 14 bit (same) |
| Sample Rate | 50 MSPS | 50 MSPS (same) | 25 MSPS (-50%) |
| Number of Channels | 2 | 2 (same) | 2 (same) |
| Architecture | Pipelined | Pipelined (same) | Pipelined (same) |
| Digital Interface | LVDS | LVDS (same) | LVDS (same) |
| Supply Voltage | 1.8 V AVDD / 1.8 V DRVDD | 1.8 V / 1.8 V (same) | 1.8 V / 1.8 V (same) |
Key Differentiators
- Higher 50 MSPS sample rate for the same resolution vs ADC3223 family (vs ADC3223IRGZ25)
- Twin upgrade path for both resolution and sample-rate tuning (vs ADC3241IRGZ25)
- Internal analog LDO reduces BOM and simplifies power tree (vs External LDO + non-LDO ADC topologies)
Design Notes
Estimated: total board power for the ADC3242IRGZ25 at 50 MSPS is approximately 2 x 71 mW = 142 mW for both channels combined. Provide a 1.8 V low-noise LDO (such as TPS7A4700RGWR) on both AVDD and DRVDD with 1 uF + 0.1 uF ceramic bypass caps at each ADC supply pin. A ferrite bead separating AVDD and DRVDD reduces digital switching noise coupling into the analog domain; targeting 60 dB power-supply rejection at clock-fundamental frequency.
Route the LVDS output pairs as 100 ohm differential transmission lines on the top layer over a continuous ground plane. Match pair lengths within 100 mil (2.5 mm) to avoid skew artifacts at the receiver. Place the digital LVDS section physically separated from the analog input network to avoid coupling. The 48-VQFN EP must be soldered to a minimum 4x4 mm grounded copper pad with at least 5 thermal vias for the 71 mW dissipation per channel.
Avoid using a noisy switching regulator on AVDD - even with the internal LDO, residual switching ripple above 1 MHz can degrade SFDR by 6-10 dB. Use a linear regulator downstream of the switching pre-regulator. Estimated: a 100 mVpp 10 MHz switching ripple on AVDD can degrade 85 dBc SFDR down to 70 dBc at 50 MSPS. Provide a clean CMOS clock to CLK+/-, preferring low-jitter sources such as TI's CDCE62005; clock jitter above 1 ps rms directly reduces SNR.
Compliance Information
RoHS compliant per TI product page as of 2026-10-12. Industrial temperature grade only (no automotive Q1 variant in same datasheet). 'RGZ' suffix indicates lead-free Pb-free terminal finish.
