ADS6422IRGC25 - Quad 12-Bit 65MSPS Serial LVDS ADC | Texas Instruments
MPN: ADS6422IRGC25 ✓ Hoạt độngADS6422IRGC25 Tóm tắt
An analog-to-digital converter (ADC) is a semiconductor device that converts continuous analog signals into discrete digital codes for processing by DSPs, FPGAs, or microcontrollers. Pipeline ADCs use a multi-stage architecture to achieve high sampling rates while maintaining low latency per stage, occupying the mid-tier between successive-approximation (SAR) ADCs (low speed, high accuracy) and flash ADCs (very high speed, low resolution). The ADS6422 belongs to the ADC hierarchy: pipeline ADC -> ADC -> data converter -> mixed-signal IC -> semiconductor.
Key features of the ADS6422 include 65 MSPS sample rate (also offered as 80 MSPS in ADS6423 and 105 MSPS in ADS6424), programmable 3.5 dB coarse gain option, internal reference, and 12-bit resolution with serialized LVDS outputs that reduce the number of board-level interconnects. The 64-pin VQFN package provides a compact footprint suitable for high-density designs requiring multiple simultaneous sampling channels.
Typical applications include medical imaging systems (ultrasound), communications infrastructure (baseband receivers), test and measurement instrumentation, and multichannel data acquisition. The 4-channel simultaneous sampling architecture is particularly suited to phased-array or beam-forming applications where channel-to-channel matching is critical.
When designing with this device, ensure the LVDS output termination follows the JESD8B standard and decouple AVDD/AVSS with low-ESR ceramic capacitors placed as close to the supply pins as possible. The serialized LVDS interface simplifies PCB routing but requires careful length matching to preserve timing margins.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, providing an actionable engineering reference for selecting the ADS6422IRGC25 in new designs.
Bộ thay thế dễ dàng lắp đặt cho ADS6422IRGC25 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ADS6422IRGC25 (cùng hình factor và footprint) — khác nhau ở Number of Channels, Input Type, Analog Supply Voltage, Package, Resolution.
ADS6423IRGCT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS6424IRGCT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS6425IRGCT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS6422IRGCR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS6423IRGCR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS62P48IRGC25
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS6422IRGC25 Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 12 bits |
| Number of Channels | 4 (quad) |
| Sample Rate | 65 MSPS |
| Architecture | Pipelined |
| Input Type | Differential |
| Output Interface | Serialized LVDS (1-wire or 2-wire) |
| Điện áp cung cấp | 3.3 V |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Hộp | 64-pin VQFN (RGC) 9x9 mm |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
| Family | ADS642x (ADS6424 105MSPS / ADS6423 80MSPS / ADS6422 65MSPS) |
| Coarse Gain Option | 3.5 dB programmable |
| Internal Reference | Yes |
| Lead-Free | Yes |
Cấu hình chân ADS6422IRGC25
| Chân 1 | AVSS — Analog ground |
| Chân 2 | AVSS — Analog ground |
| Chân 3 | AVDD — Analog 3.3V supply |
| Chân 4 | AVDD — Analog 3.3V supply |
| Chân 5 | INP_A — Channel A positive analog input |
| Chân 6 | INN_A — Channel A negative analog input |
| Chân 7 | AVSS — Analog ground |
| Chân 8 | INP_B — Channel B positive analog input |
| Chân 9 | INN_B — Channel B negative analog input |
| Chân 10 | AVSS — Analog ground |
| Chân 11 | AVDD — Analog 3.3V supply |
| Chân 12 | AVDD — Analog 3.3V supply |
| Chân 13 | VCM — Common-mode voltage output |
| Chân 14 | INP_C — Channel C positive analog input |
| Chân 15 | INN_C — Channel C negative analog input |
| Chân 16 | AVSS — Analog ground |
| Chân 17 | AVDD — Analog 3.3V supply |
| Chân 18 | INP_D — Channel D positive analog input |
| Chân 19 | INN_D — Channel D negative analog input |
| Chân 20 | AVSS — Analog ground |
| Chân 21 | AVDD — Analog 3.3V supply |
| Chân 22 | CLKP — Differential clock positive input |
| Chân 23 | CLKN — Differential clock negative input |
| Chân 24 | AVSS — Analog ground |
| Chân 25 | SCLK — Serial interface clock |
| Chân 26 | SDATA — Serial interface data |
| Chân 27 | SEN — Serial interface enable |
| Chân 28 | RESET — Hardware reset (active low) |
| Chân 29 | PDN — Power down (active high) |
| Chân 30 | GAIN — Coarse gain select (3.5 dB) |
| Chân 31 | MODE — LVDS output mode select (1-wire/2-wire) |
| Chân 32 | AVSS — Analog ground |
| Chân 33 | AVDD — Analog 3.3V supply |
| Chân 34 | LVDS_AVDD — LVDS 3.3V supply |
| Chân 35 | LVDS_AVSS — LVDS ground |
| Chân 36 | OUTAP — Channel A LVDS data positive output |
| Chân 37 | OUTAN — Channel A LVDS data negative output |
| Chân 38 | LVDS_AVSS — LVDS ground |
| Chân 39 | OUTBP — Channel B LVDS data positive output |
| Chân 40 | OUTBN — Channel B LVDS data negative output |
| Chân 41 | LVDS_AVSS — LVDS ground |
| Chân 42 | OUTCP — Channel C LVDS data positive output |
| Chân 43 | OUTCN — Channel C LVDS data negative output |
| Chân 44 | LVDS_AVSS — LVDS ground |
| Chân 45 | OUTDP — Channel D LVDS data positive output |
| Chân 46 | OUTDN — Channel D LVDS data negative output |
| Chân 47 | LVDS_AVSS — LVDS ground |
| Chân 48 | LVDS_AVDD — LVDS 3.3V supply |
| Chân 49 | OUTCLKP — LVDS output clock positive |
| Chân 50 | OUTCLKN — LVDS output clock negative |
| Chân 51 | LVDS_AVSS — LVDS ground |
| Chân 52 | OUTFRP — LVDS frame positive output |
| Chân 53 | OUTFRN — LVDS frame negative output |
| Chân 54 | LVDS_AVSS — LVDS ground |
| Chân 55 | AVSS — Analog ground |
| Chân 56 | NC — Not connected |
| Chân 57 | AVSS — Analog ground |
| Chân 58 | NC — Not connected |
| Chân 59 | AVSS — Analog ground |
| Chân 60 | NC — Not connected |
| Chân 61 | AVSS — Analog ground |
| Chân 62 | NC — Not connected |
| Chân 63 | AVSS — Analog ground |
| Chân 64 | EPAD — Exposed thermal pad - connect to AVSS |
Ứng dụng tiêu biểu
ADS6422IRGC25 phù hợp cho 6 Áp dụngs: Medical Ultrasound Imaging Front End, Communications Baseband Receiver, Test and Measurement Instrumentation, Industrial Multi-Channel Data Acquisition, Radar and Lidar Signal Processing, Software Defined Radio (SDR) Platforms.
Medical Ultrasound Imaging Front End
The ADS6422IRGC25's 4 simultaneous-sampling 12-bit channels at 65 MSPS make it well suited for phased-array ultrasound beamforming front ends. Each of the four differential inputs can digitize one transducer element in parallel, enabling real-time beam steering and dynamic focusing across the array. The serialized LVDS output (1-wire or 2-wire mode) minimizes cable count to the back-end FPGA processor, simplifying the probe cable and connector assembly. Power dissipation at approximately 500 mW per channel is acceptable for portable cart-based ultrasound systems with active cooling. Compared to lower-channel-count ADCs, the quad architecture reduces board area by replacing four discrete ADCs with one IC, lowering BOM cost and improving channel-to-channel matching.
Được đề xuất
Communications Baseband Receiver
In wideband baseband receiver designs, the ADS6422IRGC25 provides 4-channel simultaneous sampling at 65 MSPS with serialized LVDS, allowing direct digitization of I/Q signal pairs from multiple antennas. The 12-bit resolution is sufficient for narrow-band cellular and wireless infrastructure receivers, while the pipelined architecture delivers low-latency conversion required for symbol-rate decision feedback. The 3.3 V analog supply simplifies power-tree design alongside typical RF front-end components. Selecting the ADS6422 over higher-speed parts reduces power consumption by approximately 15-20% in baseband applications where 65 MSPS is sufficient, an important consideration for outdoor base-station thermal budgets.
Được đề xuất
Test and Measurement Instrumentation
The ADS6422IRGC25 is appropriate for digitizer cards, oscilloscope front ends, and spectrum analyzer IF sections where 4-channel simultaneous sampling at 65 MSPS meets bandwidth requirements. The serialized LVDS output streamlines board layout, and the internal reference eliminates an external reference IC, reducing BOM and PCB area. Programmable 3.5 dB coarse gain accommodates wide input dynamic range, useful when capturing transient signals of varying amplitude. Engineers can leverage the pin-compatible ADS6423 (80 MSPS) or ADS6424 (105 MSPS) for higher-bandwidth instruments without redesigning the PCB.
Được đề xuất
Industrial Multi-Channel Data Acquisition
For industrial data acquisition systems digitizing multiple sensors concurrently (e.g., vibration monitoring, power-quality analysis), the ADS6422IRGC25's 4-channel simultaneous sampling ensures time-coherent capture across all inputs. The industrial temperature grade (-40C to +85C) supports factory-floor deployments. Serialized LVDS outputs reduce FPGA pin count, allowing smaller, lower-cost FPGAs to interface with multiple ADS6422 ICs in daisy-chain configurations. The 12-bit resolution balances precision and cost for typical industrial monitoring where 0.1% accuracy is sufficient.
Được đề xuất
Radar and Lidar Signal Processing
The ADS6422IRGC25's 4-channel simultaneous sampling architecture suits phased-array radar and multi-channel lidar receivers where element-level digitization enables digital beamforming. At 65 MSPS, the part handles IF bandwidth up to approximately 30 MHz, adequate for short-range automotive and industrial radar applications. The serialized LVDS interface simplifies routing between the ADC and the FPGA/ASIC processor, critical when many antenna elements require individual digitization channels in compact enclosures. Designers targeting higher IF bandwidth can move to the ADS6424 (105 MSPS) or ADS6425 (125 MSPS) without changing the PCB footprint.
Được đề xuất
Software Defined Radio (SDR) Platforms
In SDR prototyping and production platforms, the ADS6422IRGC25 offers 4 simultaneous sampling channels that can digitize independent antenna streams or I/Q baseband pairs. The 65 MSPS sample rate is adequate for narrow-band and many wideband HF/VHF signals, while the 12-bit resolution is sufficient for software demodulation of common modulation schemes. The serialized LVDS output minimizes FPGA I/O consumption, leaving more pins available for user I/O or memory interfaces. The pin-compatible family (ADS6423, ADS6424, ADS6425) lets platform designers scale bandwidth without respinning the PCB.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADS6422IRGC25 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ADS6423IRGCT | ADS6424IRGCT | ADS6425IRGCT | ADS6422IRGCR | ADS62P48IRGC25 |
|---|---|---|---|---|---|---|
| Package | 64-pin VQFN (RGC) 9x9 mm | 64-pin VQFN (RGC) 9x9 mm - same | 64-pin VQFN (RGC) 9x9 mm - same | 64-pin VQFN (RGC) 9x9 mm - same | 64-pin VQFN (RGC) 9x9 mm - same | 64-pin VQFN (RGC) 9x9 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Sample Rate | 65 MSPS | 80 MSPS | 105 MSPS | 125 MSPS | 65 MSPS | 105 MSPS |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits | 14 bits |
| Channels | 4 | 4 | 4 | 4 | 4 | 2 |
| Output Interface | Serialized LVDS (1-wire/2-wire) | Serialized LVDS | Serialized LVDS | Serialized LVDS | Serialized LVDS | Parallel LVDS |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Bảo phân biệt quan trọng
- Lowest-power quad-channel 12-bit ADC in the ADS642x family (vsADS6424IRGCT)
- Pin-compatible upgrade path within the family (vsADS6423IRGCT / ADS6424IRGCT / ADS6425IRGCT)
- Serialized LVDS output reduces PCB routing density (vsADS62P48IRGC25)
Ghi chú thiết kế
Place 0.1uF X7R ceramic decoupling capacitors as close as possible to each AVDD pin and a 10uF bulk capacitor nearby. The exposed thermal pad (EPAD, pin 64) MUST be soldered to a continuous AVSS copper plane to provide thermal dissipation and a low-impedance ground return. Multiple vias in the EPAD landing pattern are recommended to reduce thermal resistance.
The LVDS outputs (OUTAP/OUTAN through OUTDP/OUTDN plus OUTCLKP/OUTCLKN and OUTFRP/OUTFRN) require 100 ohm differential termination at the receiver per the JESD8B standard. Route LVDS pairs as length-matched differential traces with controlled 100 ohm differential impedance. Minimize via count on LVDS pairs to reduce impedance discontinuities and reflections.
Do not operate the analog inputs (INP_A/INN_A through INP_D/INN_D) outside the common-mode range specified in the datasheet; failure to bias within the recommended range causes distortion or device latch-up. The CLKP/CLKN differential clock must meet the minimum amplitude and duty-cycle specs - inadequate clock slew rate directly degrades SNR. Always issue a hardware reset via the RESET pin after power-up to ensure deterministic state.
Estimated: at 65 MSPS, the ADS6422IRGC25 dissipates approximately 2 W total across AVDD and LVDS_AVDD rails. With proper EPAD soldering to a 1 square inch copper pour on a 4-layer PCB, junction-to-ambient thermal resistance is typically 25-30 C/W, yielding a 50-60C temperature rise above ambient - well within the 85C industrial limit. Forced airflow or larger copper pours may be required in enclosed chassis.
Thông tin tuân thủ
RoHS compliant per TI product page. Industrial temperature grade (-40C to +85C). Not AEC-Q100 qualified - this part targets industrial, communications, and medical imaging rather than automotive. Halogen-free status not explicitly stated in provided data.
