ADS6149IRGZ25 - 14-Bit 250MSPS Low-Power ADC | Texas Instruments
MPN: ADS6149IRGZ25 ✓ Hoạt độngADS6149IRGZ25 Tóm tắt
An analog-to-digital converter (ADC) is a semiconductor device that transforms continuous analog signals into discrete digital codes for processing by DSPs, FPGAs, or microcontrollers. Pipelined ADCs use a multi-stage architecture to achieve high sampling rates while maintaining moderate resolution; they sit within the data converter hierarchy of successive-approximation-register (SAR) and flash ADCs. The ADS6149 specifically targets applications where high dynamic range and low power are required simultaneously, such as communications infrastructure and medical imaging.
Key features include 250 MSPS maximum sample rate, 14-bit resolution, 687 mW total power dissipation at 250 MSPS, DDR LVDS outputs for reduced pin count at high speeds, and parallel CMOS options for flexible interfacing. The device provides excellent spurious-free dynamic range (SFDR) and signal-to-noise ratio (SNR) across a wide input bandwidth, suitable for digitizing IF and baseband signals in wireless and test equipment.
The ADS6149 uses a switched-capacitor pipelined architecture with internal reference and sample-and-hold, supporting both single-ended and differential analog interfaces. The integrated DDR LVDS interface enables transfer of two data bits per cycle, minimizing the number of LVDS pairs required for 250 MSPS operation. Programmable gain, offset, and test-pattern features simplify system calibration and verification in production test environments.
Typical applications include wireless multi-carrier communications infrastructure, software-defined radio (SDR), power amplifier linearization, test and measurement instrumentation, high-definition video, medical imaging, and radar systems. The pin compatibility with the ADS5547 family allows designers to migrate designs across resolution/speed nodes without PCB rework.
When designing with this ADC, allocate the analog and digital supply domains carefully—place 1.8V AVDD and 3.3V DRVDD decoupling capacitors close to the supply pins. Use controlled-impedance differential routing for analog inputs and 50-ohm termination on LVDS outputs to preserve signal integrity at full sample rate.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives within the ADS5547/ADS614X family, and practical design notes not consolidated on a single manufacturer or distributor page.
Bộ thay thế dễ dàng lắp đặt cho ADS6149IRGZ25 — 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 ADS6149IRGZ25 (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature Range, Resolution, Analog Supply Voltage, Input Type.
ADS6149IRGZT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS6129IRGZ25
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS6148IRGZ25
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS6149IRGZRG4
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS5547IRGZT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS6128IRGZ25
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS6149IRGZ25 Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 14 bits |
| Number of Channels | 1 |
| Sample Rate (Max) | 250 MSPS |
| Architecture | Pipelined |
| Input Type | Differential / Single-ended |
| Analog Supply Voltage | 1.8 V |
| Digital I/O Supply Voltage | 3.3 V |
| Power Dissipation | 687 mW at 250 MSPS |
| Output Interface | DDR LVDS / Parallel CMOS |
| Hộp | 48-VQFN (RGZ) 7x7 mm |
| Khoảng nhiệt độ hoạt động | -40 °C to +85 °C (Industrial) |
| Số chân | 48 |
| Terminal Form | No Lead (HVQCCN) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân ADS6149IRGZ25
| Chân 1 | AVDD — Analog supply, 1.8 V |
| Chân 2 | AVDD — Analog supply, 1.8 V |
| Chân 3 | GND — Analog ground |
| Chân 4 | INP — Positive analog input |
| Chân 5 | INN — Negative analog input |
| Chân 6 | VCM — Common-mode voltage output |
| Chân 7 | GND — Analog ground |
| Chân 8 | REFT — Reference top decoupling |
| Chân 9 | REFB — Reference bottom decoupling |
| Chân 10 | GND — Analog ground |
| Chân 11 | AVDD — Analog supply, 1.8 V |
| Chân 12 | CLK — Differential clock input positive |
| Chân 13 | CLK_B — Differential clock input negative |
| Chân 14 | GND — Clock ground |
| Chân 15 | DRVDD — Digital I/O supply, 3.3 V |
| Chân 16 | GND — Digital ground |
| Chân 17 | DRVDD — Digital I/O supply, 3.3 V |
| Chân 18 | D0P — LVDS data output pair 0, positive |
| Chân 19 | D0N — LVDS data output pair 0, negative |
| Chân 20 | D1P — LVDS data output pair 1, positive |
| Chân 21 | D1N — LVDS data output pair 1, negative |
| Chân 22 | D2P — LVDS data output pair 2, positive |
| Chân 23 | D2N — LVDS data output pair 2, negative |
| Chân 24 | D3P — LVDS data output pair 3, positive |
| Chân 25 | D3N — LVDS data output pair 3, negative |
| Chân 26 | D4P — LVDS data output pair 4, positive |
| Chân 27 | D4N — LVDS data output pair 4, negative |
| Chân 28 | D5P — LVDS data output pair 5, positive |
| Chân 29 | D5N — LVDS data output pair 5, negative |
| Chân 30 | D6P — LVDS data output pair 6, positive |
| Chân 31 | D6N — LVDS data output pair 6, negative |
| Chân 32 | DRVDD — Digital I/O supply, 3.3 V |
| Chân 33 | GND — Digital ground |
| Chân 34 | CLKP — DDR LVDS clock output positive |
| Chân 35 | CLKN — DDR LVDS clock output negative |
| Chân 36 | DRVDD — Digital I/O supply, 3.3 V |
| Chân 37 | GND — Digital ground |
| Chân 38 | OE — Output enable |
| Chân 39 | RESET — Reset, active low |
| Chân 40 | SCLK — Serial interface clock |
| Chân 41 | SDATA — Serial interface data |
| Chân 42 | SEN — Serial interface enable |
| Chân 43 | SDOUT — Serial interface data output |
| Chân 44 | GND — Ground |
| Chân 45 | AVDD — Analog supply, 1.8 V |
| Chân 46 | GND — Analog ground |
| Chân 47 | NC — Not connected |
| Chân 48 | GND — Exposed pad / ground |
Ứng dụng tiêu biểu
ADS6149IRGZ25 phù hợp cho 6 Áp dụngs: Wireless Multi-Carrier Communications Infrastructure, Software Defined Radio (SDR), Power Amplifier Linearization, Test and Measurement Instrumentation, Medical Imaging Systems, Radar Systems.
Wireless Multi-Carrier Communications Infrastructure
The ADS6149IRGZ25 fits multi-carrier wireless base-station receivers because its 14-bit resolution at 250 MSPS preserves SFDR when digitizing wide-bandwidth IF signals containing multiple modulated carriers. The 1.8 V analog and 3.3 V digital supplies align with typical base-station line-card rails, and the DDR LVDS interface streams two data bits per clock cycle so fewer LVDS pairs are routed to the FPGA. Total power of 687 mW leaves thermal headroom in sealed outdoor enclosures. Designers place the ADC downstream of the analog AGC and connect INP/INN through a balun for differential drive. Pin compatibility with the ADS5547 family lets one PCB support multi-band, multi-resolution product variants without board respins.
Được đề xuất
Software Defined Radio (SDR)
The ADS6149IRGZ25 suits SDR platforms because its 250 MSPS sample rate and wide analog input bandwidth allow direct digitization of IF blocks up to 100 MHz or more, removing analog downconversion and increasing receiver flexibility. The 14-bit dynamic range supports 802.16/e and other broadband waveforms where peak-to-average ratios are high. DDR LVDS output eases board layout to Xilinx Kintex or similar FPGAs by halving the data-lane count. Industrial -40 to 85 °C operation allows use in outdoor or rugged SDR enclosures. Drop-in compatibility with the ADS5547 lets designers tune resolution versus power per platform tier.
Được đề xuất
Power Amplifier Linearization
The ADS6149IRGZ25 is widely used in digital predistortion (DPD) feedback paths for power amplifier linearization, where a sample of the PA output is digitized and used to compute correction coefficients. Its 250 MSPS rate captures multi-carrier signals including 802.16/e and LTE waveforms, while 14-bit resolution captures intermodulation products critical for ACPR correction. The 687 mW dissipation is acceptable in densely populated multi-antenna (MIMO) base stations. Differential analog inputs reject common-mode switching noise from the PA supply. The same VQFN-48 footprint across the ADS614X family lets designers reuse the feedback ADC site across multiple PA platforms.
Được đề xuất
Test and Measurement Instrumentation
The ADS6149IRGZ25 fits modular instruments such as oscilloscopes, spectrum analyzers, and signal analyzers because its 14-bit SFDR and 250 MSPS rate enable faithful capture of repetitive and transient signals across a wide frequency range. The DDR LVDS output delivers data to FPGAs with minimal lane count, simplifying dense multi-channel digitizer layouts. Differential inputs accept standard balun-driven test signals with high common-mode rejection. Industrial temperature grade supports bench and field instruments. The TI datasheet documents the SNR/SFDR specifications that bench designers need for instrument gain calibration, and the ADS6129IRGZ25 lower-power variant supports portable form factors.
Được đề xuất
Medical Imaging Systems
The ADS6149IRGZ25 is suitable for medical imaging front-ends such as ultrasound beamformers and MRI receivers, where high dynamic range and high sample rates are needed to digitize echoes or RF signals with fine amplitude resolution. Its 14-bit resolution supports the contrast range required for diagnostic imaging, and 250 MSPS is sufficient for many ultrasound and MRI channel architectures. The compact 48-VQFN 7x7 mm footprint enables high channel density on receiver boards. Industrial -40 to 85 °C operation supports clinical and portable medical devices. Differential analog inputs reject common-mode noise from switching power supplies typical in MRI gradient amplifiers.
Được đề xuất
Radar Systems
The ADS6149IRGZ25 supports radar IF digitization in ground-based, marine, and surveillance radar systems where bandwidth and dynamic range drive ADC requirements. Its 14-bit resolution at 250 MSPS captures complex pulsed-Doppler waveforms while preserving range-bin SNR. DDR LVDS output routes data to FPGAs/ASICs running FFT-based Doppler processing. The differential analog input rejects common-mode noise from the radar's switching transmitter. The industrial temperature rating accommodates outdoor deployments. Designers planning family gain provide placement for an ADS6129IRGZ25 footprint-compatible lower-power variant on the same PCB for cost-optimized product tiers.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADS6149IRGZ25 — 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 | ADS6149IRGZT | ADS6129IRGZ25 | ADS6148IRGZ25 | ADS5547IRGZT | ADS6128IRGZ25 |
|---|---|---|---|---|---|---|
| Package | 48-VQFN (RGZ) 7x7 mm | 48-VQFN (RGZ) 7x7 mm - same | 48-VQFN (RGZ) 7x7 mm - same | 48-VQFN (RGZ) 7x7 mm - same | 48-VQFN (RGZ) 7x7 mm - same | 48-VQFN (RGZ) 7x7 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 14 bits | 14 bits | 12 bits | 14 bits | 14 bits | 12 bits |
| Max Sample Rate | 250 MSPS | 250 MSPS | 250 MSPS | 210 MSPS | 210 MSPS | 210 MSPS |
| Analog Supply | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Digital I/O Supply | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Output Interface | DDR LVDS / Parallel CMOS | DDR LVDS / Parallel CMOS | DDR LVDS / Parallel CMOS | DDR LVDS / Parallel CMOS | DDR LVDS / Parallel CMOS | DDR LVDS / Parallel CMOS |
| Temperature Grade | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) |
| Pin Compatibility Family | ADS5547 family | ADS5547 family | ADS614X/ADS612X family | ADS614X/ADS612X family | ADS5547 family | ADS614X/ADS612X family |
Bảo phân biệt quan trọng
- Pin-compatible with ADS5547 family for drop-in platform reuse (vsADS5547IRGZT)
- 14-bit resolution for higher SFDR in same TWT module (vsADS6129IRGZ25)
- 250 MSPS maximum sample rate in 14-bit class (vsADS6148IRGZ25)
Ghi chú thiết kế
Estimated: at 1.8 V AVDD ~250 mA and 3.3 V DRVDD ~80 mA, total analog plus digital dissipation is approximately 687 mW at 250 MSPS per the TI ADS6149 datasheet. Decouple each AVDD and DRVDD pin with a 0.1 µF ceramic plus a 10 µF low-ESR bulk capacitor placed within 5 mm of the supply pin. Use a star-ground topology tying the ADC ground to the analog ground plane, with the digital return currents routed separately to avoid coupling digital noise into the analog front-end.
Route the differential analog input pair (INP/INN) with 100-ohm differential controlled-impedance traces and keep them short and symmetric to preserve SNR and SFDR. The differential clock input (CLK/CLK_B) should follow the same 100-ohm differential layout. Place the input balun or driver amplifier close to the ADC inputs. Route the DDR LVDS data pairs with 100-ohm differential impedance and 50-ohm single-ended, and keep the LVDS output traces away from the analog input traces to avoid digital feedback into the analog front-end.
Terminate the DDR LVDS data outputs with 100-ohm differential termination at the FPGA side. Series-stagger a small common-mode choke on LVDS pairs if EMI is a concern. Provide a clean low-jitter clock to CLK/CLK_B because aperture jitter directly limits SNR; TI recommends using a clock jitter cleaner or dedicated clock generator such as the CDCE62005. Keep the analog input amplitude within the datasheet full-scale range to maximize SNR.
The 48-VQFN (RGZ) package has an exposed thermal pad that must be soldered to a continuous ground plane with thermal vias to the inner layers to keep the junction temperature within limits. Estimated: at 687 mW dissipation, the junction-to-ambient thermal resistance should be below ~50 C/W to ensure safe operation at 85 °C ambient. Avoid placing the ADC near other heat-dissipating devices such as power inductors or switching regulators without adequate copper area.
Do not leave the exposed pad unconnected; this degrades thermal performance and can cause erratic behavior. Always enable the digital outputs through the OE pin before attempting to capture data. Do not apply analog inputs before AVDD is ramped; power-supply sequencing is documented in the TI ADS6149 datasheet. When migrating between ADS614X and ADS612X variants, revalidate the digital backend because 12-bit vs 14-bit data alignment may differ. Verify the VCM common-mode voltage is correctly bypassed for the external driver amplifier reference.
Thông tin tuân thủ
RoHS and lead-free per TI product page. Industrial temperature grade -40 to +85 °C. Not AEC-Q100 qualified (this is a standard industrial/commercial part).
