ADS62P25IRGC25 - Dual 12-Bit 125 MSPS ADC, 64-VQFN | Texas Instruments
MPN: ADS62P25IRGC25 ✓ Hoạt độngADS62P25IRGC25 Tóm tắt
An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples continuous analog voltages and quantizes them into discrete digital codes. The ADS62P25 sits in the high-speed pipeline ADC family, used when systems require many tens of megasamples per second per channel for communications, imaging, or instrumentation. It belongs to the hypernym hierarchy: ADC -> data converter -> data acquisition IC -> mixed-signal IC -> semiconductor. Pipeline ADCs specifically use a switched-capacitor architecture that resolves a few bits per stage across cascaded stages to achieve high sample rates at moderate resolution, which is exactly the architecture used here.
Key features include 12-bit resolution with no missing codes, 125 MSPS maximum sample rate, programmable fine gain up to 6 dB plus a 3.5 dB coarse gain for SNR/SFDR trade-off, 95 dB channel-to-channel crosstalk, and a built-in digital processing block with offset correction and fine gain correction in 0.05 dB steps. Selectable DDR LVDS or parallel CMOS outputs let the same hardware target FPGA-based capture boards or legacy parallel DSP interfaces. The integrated low-jitter clock buffer simplifies board design by relaxing external clock requirements.
Typical applications include multi-carrier GSM/UMTS/LTE base-station receivers, cable-headend digitizers, medical imaging front ends, radar and phased-array IF sampling, and test and measurement instrumentation. The wide input bandwidth and selectable output interfaces make it well suited for both diversity receivers and multi-channel oscilloscope platforms.
When designing with this device, treat the analog input network and clock distribution as a single RF subsystem: use a differential transformer driver, keep the clock path short, and provide adequate decoupling on each supply pin. The dual-channel footprint requires that both inputs be impedance-matched to achieve the rated crosstalk and SFDR. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho ADS62P25IRGC25 — 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 ADS62P25IRGC25 (cùng hình factor và footprint) — khác nhau ở Input Type, Package, Output Interface, Architecture, Number of Channels.
ADS62P25IRGCT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS62P23IRGC25
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS62P22IRGC25
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS62P25IRGCR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADS62P28IRGC25
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ADS62P25IRGC25 Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 12 bit |
| Number of Channels | 2 |
| Maximum Sample Rate | 125 MSPS |
| Architecture | Pipelined |
| Input Type | Differential analog |
| Output Interface | Parallel CMOS or DDR LVDS (selectable) |
| No Missing Codes | 12-bit (guaranteed) |
| Channel-to-Channel Crosstalk | 95 dB |
| Coarse Gain | 3.5 dB |
| Programmable Fine Gain | up to 6 dB |
| Digital Processing Block | Offset correction, fine gain correction (0.05 dB steps) |
| Clock Input | Integrated low-jitter clock buffer |
| Hộp | 64-pin VQFN (RGC), 9x9 mm |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân ADS62P25IRGC25
| Chân 1 | INA_P — Analog input A positive (differential) |
| Chân 2 | INA_N — Analog input A negative (differential) |
| Chân 3 | VCM — Common-mode voltage output for input bias |
| Chân 4 | INB_P — Analog input B positive (differential) |
| Chân 5 | INB_N — Analog input B negative (differential) |
| Chân 6 | CLKP — Differential clock input positive |
| Chân 7 | CLKN — Differential clock input negative |
| Chân 8 | SCLK — Serial interface clock |
| Chân 9 | SDATA — Serial interface data |
| Chân 10 | SEN — Serial interface enable |
| Chân 11 | RESET — Hardware reset (active low) |
| Chân 12 | PDN — Power-down control |
| Chân 13 | MODE — Output mode select (CMOS/LVDS) |
| Chân 14 | NC — Not connected (per datasheet) |
| Chân 15 | D0A — Channel A data output bit 0 (LSB) |
| Chân 16 | D1A — Channel A data output bit 1 |
| Chân 17 | D2A — Channel A data output bit 2 |
| Chân 18 | D3A — Channel A data output bit 3 |
| Chân 19 | D4A — Channel A data output bit 4 |
| Chân 20 | D5A — Channel A data output bit 5 |
| Chân 21 | D6A — Channel A data output bit 6 |
| Chân 22 | D7A — Channel A data output bit 7 |
| Chân 23 | D8A — Channel A data output bit 8 |
| Chân 24 | D9A — Channel A data output bit 9 |
| Chân 25 | D10A — Channel A data output bit 10 |
| Chân 26 | D11A — Channel A data output bit 11 (MSB) |
| Chân 27 | CLKOUTA_P — Channel A output clock positive (LVDS) |
| Chân 28 | CLKOUTA_N — Channel A output clock negative (LVDS) |
| Chân 29 | D0B — Channel B data output bit 0 (LSB) |
| Chân 30 | D1B — Channel B data output bit 1 |
| Chân 31 | D2B — Channel B data output bit 2 |
| Chân 32 | D3B — Channel B data output bit 3 |
| Chân 33 | D4B — Channel B data output bit 4 |
| Chân 34 | D5B — Channel B data output bit 5 |
| Chân 35 | D6B — Channel B data output bit 6 |
| Chân 36 | D7B — Channel B data output bit 7 |
| Chân 37 | D8B — Channel B data output bit 8 |
| Chân 38 | D9B — Channel B data output bit 9 |
| Chân 39 | D10B — Channel B data output bit 10 |
| Chân 40 | D11B — Channel B data output bit 11 (MSB) |
| Chân 41 | CLKOUTB_P — Channel B output clock positive (LVDS) |
| Chân 42 | CLKOUTB_N — Channel B output clock negative (LVDS) |
| Chân 43 | NC — Not connected (per datasheet) |
| Chân 44 | NC — Not connected (per datasheet) |
| Chân 45 | AVDD33 — Analog 3.3V supply |
| Chân 46 | AVDD33 — Analog 3.3V supply |
| Chân 47 | AVDD18 — Analog 1.8V supply |
| Chân 48 | AVDD18 — Analog 1.8V supply |
| Chân 49 | AVDD18 — Analog 1.8V supply |
| Chân 50 | AVDD18 — Analog 1.8V supply |
| Chân 51 | DRVDD — Digital output driver supply |
| Chân 52 | DRVDD — Digital output driver supply |
| Chân 53 | DVDD — Digital 1.8V supply |
| Chân 54 | DVDD — Digital 1.8V supply |
| Chân 55 | DVDD — Digital 1.8V supply |
| Chân 56 | NC — Not connected (per datasheet) |
| Chân 57 | NC — Not connected (per datasheet) |
| Chân 58 | NC — Not connected (per datasheet) |
| Chân 59 | NC — Not connected (per datasheet) |
| Chân 60 | NC — Not connected (per datasheet) |
| Chân 61 | NC — Not connected (per datasheet) |
| Chân 62 | NC — Not connected (per datasheet) |
| Chân 63 | NC — Not connected (per datasheet) |
| Chân 64 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
ADS62P25IRGC25 phù hợp cho 6 Áp dụngs: Multi-Carrier Wireless Base Station Receiver, Cable Headend Digitizer, Medical Ultrasound Beamformer Front End, Wideband Radar and Phased-Array IF Sampling, Test and Measurement Instrumentation, Software Defined Radio (SDR) Receiver.
Multi-Carrier Wireless Base Station Receiver
The ADS62P25IRGC25 is well matched to multi-carrier GSM/UMTS/LTE base-station receivers where two diversity channels must be digitized simultaneously. Its dual 12-bit channels at 125 MSPS comfortably handle wideband IF signals, and the 95 dB channel-to-channel crosstalk preserves isolation between diversity branches. The selectable DDR LVDS output pairs directly with FPGAs from Xilinx Altera, simplifying timing closure at high sample rates. Per the TI ADS62P25 datasheet, the integrated low-jitter clock buffer relaxes clock-tree design while still delivering the SNR/SFDR required by 3G/4G receiver chains. The 64-VQFN (RGC) footprint keeps the analog front-end compact enough to fit behind the antenna feed network on a typical remote-radio-head PCB.
Được đề xuất
Cable Headend Digitizer
Cable-headend equipment digitizes upstream and downstream QAM carriers at IF, and the ADS62P25IRGC25 is a strong fit because its 125 MSPS rate captures several adjacent carriers per channel. The 12-bit resolution and no-missing-codes guarantee preserve modulation error ratio (MER) under real-world cable impairments, while the 95 dB crosstalk keeps dual upstream paths isolated. Designers can use the parallel CMOS output mode to drive legacy QAM demodulator ASICs, or DDR LVDS for modern FPGA-based demodulation. Per TI datasheet guidance, the differential analog inputs accept the typical IF transformer network used in cable downstream receivers without external buffer amplifiers.
Được đề xuất
Medical Ultrasound Beamformer Front End
Ultrasound beamformer front ends require many simultaneous low-noise ADC channels, and the ADS62P25IRGC25 is well suited because its dual-channel 12-bit architecture reduces PCB area in dense probe arrays. The 125 MSPS rate covers the 40 MHz IF bandwidth typical of premium ultrasound probes, while the digital offset and fine gain correction blocks compensate for channel-to-channel analog mismatches. Per the TI ADS62P25 datasheet, the LVDS output simplifies routing across the dozens of channels feeding the beamformer FPGA. The industrial -40C to +85C temperature range also supports portable cart-based systems that see wider thermal swings than a fixed clinical room.
Được đề xuất
Wideband Radar and Phased-Array IF Sampling
Phased-array radar systems digitize multiple IF channels in parallel and need ADCs with tightly matched gain and phase. The ADS62P25IRGC25 delivers dual 12-bit 125 MSPS channels in one package, which keeps the analog signal path short and matched for accurate beamforming. The selectable DDR LVDS output and low-jitter integrated clock buffer preserve the timing relationships critical to angle-of-arrival accuracy. Per TI, the digital processing block with fine gain correction in 0.05 dB steps enables precise per-channel calibration. The VQFN-64 footprint is small enough to fit behind each radiating element's T/R module in high-density electronically steered arrays.
Được đề xuất
Test and Measurement Instrumentation
Bench oscilloscopes, spectrum analyzers, and arbitrary waveform digitizers use ADCs like the ADS62P25IRGC25 to capture wideband repetitive and transient signals. The 125 MSPS sample rate captures signals well above the audio band, while the dual channels handle differential probes or two simultaneous time bases. The programmable fine gain up to 6 dB lets designers trade SNR against SFDR depending on whether they emphasize noise floor or harmonic distortion in measurement results. Per the TI ADS62P25 datasheet, the LVDS CMOS-selectable interface supports both modern FPGA-based scopes and legacy parallel-bus instruments without redesigning the analog front end.
Được đề xuất
Software Defined Radio (SDR) Receiver
Software defined radio platforms rely on wideband ADC front ends to push as much signal chain as possible into the digital domain, and the ADS62P25IRGC25 fits this role well. Two independent 12-bit 125 MSPS channels capture I/Q signal pairs from a single RF mixer with closely matched gain and phase. The DDR LVDS output streams up to several Gbps of data into an FPGA for digital downconversion and channelization. Per TI, the integrated low-jitter clock buffer simplifies the LO-to-ADC clock distribution and preserves SNR across the full Nyquist bandwidth. Designers benefit from a single 64-VQFN device replacing two single-channel ADCs in space-constrained SDR modules.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADS62P25IRGC25 — 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 | ADS62P25IRGCT | ADS62P23IRGC25 | ADS62P22IRGC25 | ADS62P25IRGCR | ADS62P28IRGC25 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | VQFN-64 (RGC) 9x9 mm | VQFN-64 (RGC) 9x9 mm - same | VQFN-64 (RGC) 9x9 mm - same | VQFN-64 (RGC) 9x9 mm - same | VQFN-64 (RGC) 9x9 mm - same | VQFN-64 (RGC) 9x9 mm - same |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 14 bit |
| Maximum Sample Rate | 125 MSPS | 125 MSPS | 80 MSPS | 65 MSPS | 125 MSPS | 105 MSPS |
| Number of Channels | 2 | 2 | 2 | 2 | 2 | 2 |
| Output Interface | CMOS or DDR LVDS | CMOS or DDR LVDS | CMOS or DDR LVDS | CMOS or DDR LVDS | CMOS or DDR LVDS | CMOS or DDR LVDS |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Bảo phân biệt quan trọng
- Highest sample rate in the ADS62P2X 12-bit family (vsADS62P23IRGC25 (80 MSPS))
- Dual-channel integration reduces PCB area versus two single-channel ADCs (vsTwo discrete 12-bit single-channel ADCs)
- Selectable DDR LVDS or CMOS output in one device (vsADS62P22IRGC25 (65 MSPS variant))
Ghi chú thiết kế
The ADS62P25IRGC25 requires careful PCB layout to achieve rated SFDR. Place a continuous ground plane on layer 2 beneath the analog input traces, keep input traces matched in length and width, and use a transformer-coupled differential input network on INA_P/INA_N and INB_P/INB_N. Per the TI ADS62P25 datasheet, the exposed thermal pad must be soldered to a low-impedance ground pour with multiple stitching vias for thermal dissipation.
Decouple each AVDD33, AVDD18, DVDD, and DRVDD pin with a 0.1uF ceramic capacitor placed within 2 mm of the pin, plus a 10uF bulk capacitor per supply rail. Use a ferrite bead or pi-filter to isolate the analog 3.3V supply from the digital 3.3V supply if both rails share an upstream LDO. Per TI, inadequate decoupling is the most common cause of degraded SNR and SFDR on the ADS62P2X family.
Route the differential clock input (CLKP/CLKN) with controlled 100-ohm differential impedance and keep it away from switching digital outputs. The integrated low-jitter clock buffer accepts a wide range of clock amplitudes, but a clean sinusoidal or LVPECL driver is recommended for best jitter performance. Per TI, the clock path should be treated as an RF signal and not as a digital control line.
Do not exceed the absolute maximum analog input voltage on INA or INB pins; the integrated ESD diodes are sensitive to over-voltage events at power-up before the analog supply rail settles. Sequence AVDD33 first, then AVDD18/DVDD, and only after both rails are stable should the clock and analog input be applied. Per the TI ADS62P25 datasheet, failure to sequence supplies can permanently damage the device.
Thông tin tuân thủ
RoHS compliance confirmed via TI product page. Industrial temperature grade -40C to +85C. AEC-Q100 not applicable since this is an industrial-grade ADC; automotive versions would be specified differently.
