ADS6124IRHB25 - 12-Bit 105MSPS Low-Power ADC | Texas Instruments
MPN: ADS6124IRHB25 ✓ פעילADS6124IRHB25 סקירה
An ADC (analog-to-digital converter) is a semiconductor device that converts continuous analog signals into discrete digital codes, serving as the bridge between real-world analog phenomena (sensor outputs, RF signals, audio) and digital signal processing. Within the broader taxonomy, the ADS6124 is a successive-approximation/pipelined ADC, the dominant architecture for medium-to-high-speed data acquisition. Pipelined ADCs use a multi-stage architecture with sub-ADCs and DACs to achieve high sample rates at moderate resolution, balancing speed and accuracy through a tradeoff between latency and resolution.
Key features of the ADS6124IRHB25 include 12-bit resolution, 105 MSPS maximum sampling rate, LVDS/CMOS selectable digital interface, low power architecture, internal reference, and an industrial temperature range of -40C to +85C. The part comes in a compact 32-VQFN exposed-pad package that provides improved thermal performance for the sustained operation required at full sample rate.
Typical applications include communications base-station receivers, test and measurement equipment, medical imaging front-ends, multi-channel data acquisition systems, and radar signal processing. The wide input bandwidth and LVDS output option make it well-suited for IF sampling and high-density channel card designs.
When designing with this ADC, pay close attention to the analog input network: a transformer or differential driver is normally used to drive the analog inputs to maximize SFDR. Decoupling the AVDD and DRVDD rails with low-ESR ceramic capacitors placed close to the package improves noise immunity, and the exposed pad must be soldered to a sufficiently large PCB ground pour for thermal dissipation.
חלופות תחליף ישיר עבור ADS6124IRHB25 — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם ADS6124IRHB25 (אותו גורם צורה וטביעת רגל) — שונים ב Package, RoHS Status, Analog Supply Voltage, Output Interface, Digital Supply Voltage.
ADS6125IRHBR
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
ADS6123IRHBR
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ADS6122IRHBR
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ADS6124IRHBR
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
ADS6124IRHB25 דירוגים מרביים ומאפיינים חשמליים
| רזולוציה | 12 bits |
| Number of Inputs | 1 |
| קצב דגימה | 105 MSPS |
| Converter Architecture | Pipelined |
| Output Interface | DDR LVDS or Parallel CMOS (selectable) |
| Digital Supply Voltage (DRVDD) | 1.8 V to 3.3 V |
| Analog Supply Voltage (AVDD) | 3.3 V (typical) |
| Input Type | Differential |
| Reference Type | Internal (external reference mode supported) |
| טמפרטורת פעולה | -40C to +85C |
| מארז | 32-VQFN (5x5 mm) with exposed pad |
| סוג הרכבה | Surface Mount |
| סטטוס RoHS | Compliant |
תצורת פינים של ADS6124IRHB25
| פין 1 | AVDD — Analog supply (3.3 V typical) |
| פין 2 | GND — Analog ground |
| פין 3 | INP — Differential analog input positive |
| פין 4 | INN — Differential analog input negative |
| פין 5 | VCM — Common-mode voltage output |
| פין 6 | REFT — Reference decoupling top |
| פין 7 | REFB — Reference decoupling bottom |
| פין 8 | GND — Ground |
| פין 9 | RESET — Reset / power-down control |
| פין 10 | SCLK — Serial interface clock |
| פין 11 | SEN — Serial interface enable |
| פין 12 | SDATA — Serial interface data |
| פין 13 | CLK — Sample clock input |
| פין 14 | CLKB — Complementary sample clock input |
| פין 15 | GND — Ground |
| פין 16 | DRVDD — Digital output supply |
| פין 17 | DRVSS — Digital output ground |
| פין 18 | D0 — Data output bit D0 |
| פין 19 | D1 — Data output bit D1 |
| פין 20 | D2 — Data output bit D2 |
| פין 21 | D3 — Data output bit D3 |
| פין 22 | D4 — Data output bit D4 |
| פין 23 | D5 — Data output bit D5 |
| פין 24 | D6 — Data output bit D6 |
| פין 25 | D7 — Data output bit D7 |
| פין 26 | D8 — Data output bit D8 |
| פין 27 | D9 — Data output bit D9 |
| פין 28 | D10 — Data output bit D10 |
| פין 29 | D11 — Data output bit D11 |
| פין 30 | MODE — Output mode / format select |
| פין 31 | OE — Output enable (active high) |
| פין 32 | AGND/EP — Exposed thermal pad - ground |
יישומים טיפוסיים
ADS6124IRHB25 מתאים עבור 6 יישוםs: Communications Base-Station Receiver IF Sampling, Test and Measurement Instrumentation Digitizer, Medical Ultrasound Imaging Front-End, Radar and Lidar Signal Processing, Industrial Multi-Channel Data Acquisition, Software-Defined Radio (SDR) Wideband Front-End.
Communications Base-Station Receiver IF Sampling
The ADS6124IRHB25 is well suited to communications base-station receivers that perform direct IF sampling of intermediate-frequency signals up to about 50 MHz. With 12-bit resolution and 105 MSPS sampling, the converter preserves ample dynamic range for demodulation while DDR LVDS output pairs minimize routing congestion between ADC and FPGA. Designers place a balun or differential driver at the analog input to maximize SFDR, which is critical for adjacent-channel rejection. Compared to a dual-channel converter the single-channel 32-VQFN footprint enables dense multi-channel receiver cards where PCB real-estate is at a premium.
מומלץ
Test and Measurement Instrumentation Digitizer
Test-and-measurement digitizers benefit from the ADS6124IRHB25 combination of 12 bits, 105 MSPS, and the ability to select CMOS or DDR LVDS outputs at power-up. An FPGA downstream captures either CMOS-wide parallel buses or the more compact DDR LVDS pairs to fit a multi-channel digitizer on a single board. The exposed thermal pad of the 32-VQFN aids sustained operation at full sample rate without exceeding the 85C industrial junction limit. Designers size external anti-alias filters against the 105 MHz Nyquist, and decoupling on AVDD / DRVDD with low-ESR 100 nF and 10 uF ceramics is essential for preserving SNR.
מומלץ
Medical Ultrasound Imaging Front-End
In medical ultrasound beamformers, the ADS6124IRHB25 is used as the per-channel digitizer after the TGC/LNA stage, where its 12-bit resolution and 105 MSPS sampling rate are sufficient for capturing returning echoes at IF frequencies up to 40 MHz. The DDR LVDS output minimizes the FPGA pin count per channel, which is critical in dense 64- and 128-channel beamformer boards. The internal voltage reference reduces per-channel board area and simplifies calibration across arrays. Power dissipation at 105 MSPS is well within the thermal envelope of the 32-VQFN package when the exposed pad is properly soldered to a continuous ground pour.
מומלץ
Radar and Lidar Signal Processing
Radar pulse receivers and lidar detection front-ends can leverage the ADS6124IRHB25 to digitize intermediate-frequency echo signals at 105 MSPS with 12 bits of resolution. The pipelined core provides constant aperture delay which preserves phase alignment across channels - critical for coherent beamforming in phased-array radar. The DDR LVDS interface allows the data stream to be captured cleanly into an FPGA even at the maximum sample rate, and the single-channel 32-VQFN footprint supports dense multi-element antenna arrays. For applications below 80 MSPS, designers often use the ADS6123IRHBR as a more cost-effective drop-in alternative.
מומלץ
Industrial Multi-Channel Data Acquisition
Industrial data-acquisition systems (DAQ) often use multiple ADS6124IRHB25 parts in parallel to increase channel density because the single-channel 32-VQFN (5x5 mm) footprint preserves board area for downstream signal conditioning. The 105 MSPS sample rate enables high-bandwidth vibration, ultrasonic, or strain-gauge capture, and the selectable DDR LVDS / CMOS output lets the designer interface to either an FPGA or a high-performance MCU. Industrial temperature grade (-40C to +85C) supports factory-floor deployment. Proper PCB layout - including a continuous ground pour on the exposed pad and locally decoupled analog/digital supplies - is mandatory to keep SNR within spec.
מומלץ
Software-Defined Radio (SDR) Wideband Front-End
Software-defined radio (SDR) wideband front-ends require wide RF input bandwidth and fast sample rates to capture multiple simultaneous bands. The ADS6124IRHB25's pipelined ADC architecture and 105 MSPS sample rate support HF/VHF digitizer cards used in SDR platforms. An analog anti-alias filter precedes the converter and limits out-of-band noise to within the 12-bit quantizer noise floor, after which the digital stream is captured by an FPGA in DDR LVDS mode for real-time DSP. For SDR platforms targeting higher instantaneous bandwidth (up to ~62 MHz Nyquist), upgrading to the ADS6125IRHBR (125 MSPS, same package) is a board-level drop-in upgrade.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור ADS6124IRHB25 — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | ADS6125IRHBR | ADS6123IRHBR | ADS6122IRHBR | ADS6124IRHBR |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 32-VQFN (5x5) | 32-VQFN (5x5) - same | 32-VQFN (5x5) - same | 32-VQFN (5x5) - same | 32-VQFN (5x5) - same |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits |
| Max Sampling Rate | 105 MSPS | 125 MSPS (+19%) | 80 MSPS (-24%) | 65 MSPS (-38%) | 105 MSPS (same) |
| Number of Inputs | 1 | 1 | 1 | 1 | 1 |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
| Output Interface | DDR LVDS / Parallel CMOS | DDR LVDS / Parallel CMOS | DDR LVDS / Parallel CMOS | DDR LVDS / Parallel CMOS | DDR LVDS / Parallel CMOS |
| Internal Reference | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
מבדילים עיקריים
- 105 MSPS sweet spot between 80 and 125 MSPS grades (לעומתADS6123IRHBR (80 MSPS) and ADS6125IRHBR (125 MSPS))
- DDR LVDS output minimizes FPGA pin count per channel (לעומתADS6122IRHBR (parallel CMOS only))
- Pin-compatible across the ADS612x family (לעומתADS6124IRHBR (same die, alternate supplier code))
הערות תכנון
Place the analog input balun or differential driver as close to the INP/INN pins as possible; keep the two input traces length-matched within 1 mm to preserve SFDR. Split AVDD and DRVDD supplies at the PCB level and decouple each with a 10 uF bulk plus a 100 nF X7R ceramic placed within 3 mm of the supply pin. Route DDR LVDS output pairs with 100-ohm differential impedance and keep length matching within 0.13 mm across each pair.
The 32-VQFN exposed pad MUST be soldered to a continuous ground pour that covers at least 4 square cm of top-layer copper and connects via 25-30 thermal vias (0.2 mm drill, 0.4 mm pitch) to the inner/ground planes. Without this the junction temperature will rise sharply under sustained operation at 105 MSPS, potentially exceeding the 85C ambient rating.
Drive the CLK/CLKB sample-clock input with a low-jitter differential source such as a dedicated clock synthesizer or jitter cleaner; jitter above 0.5 ps rms directly degrades SNR as SNR = 6.02*N + 1.76 + 10*log10(Fs/2*pi*Fin^2) - jitter. For 12-bit performance at 100 MHz IF input, target jitter below 0.3 ps rms to maintain Spurious-Free Dynamic Range headroom.
Do not connect the VCM pin directly to anything other than a DC blocking capacitor to the analog input network - tying VCM to INP/INN will shift bias and reduce linearity. Also ensure RESET is driven to a valid logic level at power-up; leaving it floating can place the device in an undefined state. The MODE pin configuration (CMOS vs DDR LVDS) is latched only at power-up; toggling MODE during operation has no effect.
מידע על תאימות
RoHS compliant per TI product information. Not AEC-Q100 qualified (commercial/industrial grade, not automotive). Halogen-free status should be confirmed via TI Material Declaration.
