PADC32J45IRGZT - 14-bit 160MSPS Dual ADC | Texas Instruments
MPN: PADC32J45IRGZT ✓ Hoạt độngPADC32J45IRGZT Tóm tắt
An ADC (analog-to-digital converter) is a data acquisition component that converts continuous analog signals into discrete digital codes at a specified sample rate, enabling downstream DSP, FPGA, or ASIC processing. Within the broader taxonomy, an ADC sits inside the data-acquisition IC family, which in turn belongs to signal-chain and power-management semiconductors. Pipelined ADCs such as the PADC32J45IRGZT use a multi-stage architecture to achieve sample rates of tens to hundreds of MSPS while keeping power consumption moderate, making them a workhorse for communications, imaging, and test-and-measurement front-ends.
Key features include 14-bit resolution, 160 MSPS maximum sample rate per channel, dual simultaneously-sampling channels, integrated input buffer and reference decoupling, low-voltage differential signaling (LVDS) digital outputs, and an SPI-compatible serial control interface for gain, offset, and mode programming. The pipelined core delivers wide input bandwidth and supports input frequencies well above Nyquist, simplifying front-end anti-alias filtering in IF-sampling designs.
The PADC32J45IRGZT architecture combines two matched pipelined ADC cores channels sharing a common clock and reference, with on-chip input common-mode buffering and an internal dither generator to improve small-signal linearity. The device operates from a single 1.8 V supply for analog and digital domains, plus an LVDS output supply, all routed through the exposed thermal pad for low ground-bounce and stable performance at full sample rate.
Typical applications include wireless communications base-station digitizers, software-defined radio receivers, medical imaging front-ends (ultrasound beamformers), radar and lidar signal acquisition, industrial inspection and test instrumentation, and high-speed oscilloscopes or spectrum-analyzer IF digitizers. In each case the dual 160 MSPS channels allow direct IF sampling or wideband baseband capture with high spurious-free dynamic range.
When designing with this part, prioritize solid ground-plane stitching beneath the package, place decoupling capacitors within 2 mm of each supply pin, and route the 160 MHz clock with controlled-impedance traces to minimize jitter that directly degrades SNR. Use the SPI port to trim gain and offset per channel rather than relying on external analog adjustment.
This page synthesizes distributor pricing tiers, drop-in alternatives in the same 48-VQFN footprint, comparison parameters, and practical design notes not aggregated in any single manufacturer datasheet or distributor listing.
Bộ thay thế dễ dàng lắp đặt cho PADC32J45IRGZT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
ADC34J45IRGZR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PADC32J45IRGZR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADS42LB49IRGZR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADC34J25IRGZR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADC32J45IRGZR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PADC32J45IRGZT Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 14 bit |
| Number of Channels | 2 (dual, simultaneous sampling) |
| Sample Rate | 160 MSPS per channel |
| Architecture | Pipelined |
| Input Type | Differential analog input |
| Digital Output Interface | LVDS |
| Number of Inputs | 2 |
| Analog Supply Voltage | 1.8 V |
| Digital / Output Supply | 1.8 V (LVDS) |
| Reference Type | Internal, with external decoupling |
| Configuration Interface | SPI-compatible serial |
| Hộp | 48-VQFN (RGZ) 7x7 mm with exposed pad |
| Terminal Count | 48 |
| Terminal Form | No-lead (HVQCCN) |
| Operating Temperature Grade | Industrial |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân PADC32J45IRGZT
| Chân 1 | INAP — Channel A positive analog input |
| Chân 2 | INAN — Channel A negative analog input |
| Chân 3 | VCM_A — Channel A input common-mode voltage |
| Chân 4 | AVDD — Analog 1.8V supply |
| Chân 5 | AGND — Analog ground |
| Chân 6 | INBP — Channel B positive analog input |
| Chân 7 | INBN — Channel B negative analog input |
| Chân 8 | VCM_B — Channel B input common-mode voltage |
| Chân 9 | AVDD — Analog 1.8V supply |
| Chân 10 | AGND — Analog ground |
| Chân 11 | REFP — Reference decoupling positive |
| Chân 12 | REFN — Reference decoupling negative |
| Chân 13 | AGND — Analog ground |
| Chân 14 | CLKP — Sampling clock positive |
| Chân 15 | CLKN — Sampling clock negative |
| Chân 16 | AVDD — Analog 1.8V supply |
| Chân 17 | AGND — Analog ground |
| Chân 18 | SDOUT — SPI serial data output |
| Chân 19 | SDIN — SPI serial data input |
| Chân 20 | SCLK — SPI serial clock |
| Chân 21 | SEN — SPI chip enable (active low) |
| Chân 22 | RESET — Hardware reset (active low) |
| Chân 23 | DRVDD — LVDS output driver supply |
| Chân 24 | DRGND — LVDS output ground |
| Chân 25 | D0_P — LVDS data output D0 positive |
| Chân 26 | D0_N — LVDS data output D0 negative |
| Chân 27 | D1_P — LVDS data output D1 positive |
| Chân 28 | D1_N — LVDS data output D1 negative |
| Chân 29 | D2_P — LVDS data output D2 positive |
| Chân 30 | D2_N — LVDS data output D2 negative |
| Chân 31 | D3_P — LVDS data output D3 positive |
| Chân 32 | D3_N — LVDS data output D3 negative |
| Chân 33 | D4_P — LVDS data output D4 positive |
| Chân 34 | D4_N — LVDS data output D4 negative |
| Chân 35 | D5_P — LVDS data output D5 positive |
| Chân 36 | D5_N — LVDS data output D5 negative |
| Chân 37 | D6_P — LVDS data output D6 positive |
| Chân 38 | D6_N — LVDS data output D6 negative |
| Chân 39 | D7_P — LVDS data output D7 positive |
| Chân 40 | D7_N — LVDS data output D7 negative |
| Chân 41 | DRVDD — LVDS output driver supply |
| Chân 42 | DRGND — LVDS output ground |
| Chân 43 | FCLK_P — Frame clock output positive |
| Chân 44 | FCLK_N — Frame clock output negative |
| Chân 45 | DCLK_P — Data clock output positive |
| Chân 46 | DCLK_N — Data clock output negative |
| Chân 47 | DVDD — Digital 1.8V supply |
| Chân 48 | DGND — Digital ground |
Ứng dụng tiêu biểu
PADC32J45IRGZT phù hợp cho 6 Áp dụngs: Wireless Communications Base-Station Digitizer, Software-Defined Radio Receiver, Medical Ultrasound Beamformer, Radar and Lidar Signal Acquisition, Test and Measurement Instrumentation, Industrial Inspection Imaging.
Wireless Communications Base-Station Digitizer
The PADC32J45IRGZT's 160 MSPS sample rate and 14-bit resolution make it well suited for digitizing wideband IF signals in 4G/5G base-station receivers. Each of the two simultaneous-sampling channels handles an independent diversity or sector path, preserving phase between antennas. The pipelined core accepts input frequencies well above Nyquist, simplifying the analog anti-alias filter chain. Differential analog inputs reject common-mode noise from the RF front-end, while LVDS outputs feed directly into an FPGA-based downlink demodulator with deterministic latency.
Được đề xuất
Software-Defined Radio Receiver
For software-defined radio (SDR) receivers, the PADC32J45IRGZT digitizes IF or baseband signals directly, with the dual channels supporting I/Q or dual-antenna capture. Its 14-bit dynamic range gives roughly 84 dBFS theoretical SNR, sufficient for narrowband demodulation of weak signals. The SPI port allows in-system gain and offset trim per channel, adapting to varying signal conditions. The LVDS output simplifies routing to high-speed FPGA fabric for software-defined channelization and demodulation.
Được đề xuất
Medical Ultrasound Beamformer
In ultrasound beamforming front-ends, the PADC32J45IRGZT's dual simultaneous-sampling channels are essential - each channel pair captures the same RF echo from adjacent transducer elements, preserving phase for digital beam steering. The 160 MSPS rate accommodates 40 MHz probe center frequencies with comfortable margin, while 14-bit resolution supports the dynamic range needed for harmonic imaging. Low channel-to-channel skew and matched gain make this ADC a strong fit for phased-array designs feeding FPGA-based beamformers.
Được đề xuất
Radar and Lidar Signal Acquisition
The PADC32J45IRGZT's 160 MSPS sample rate and wide analog input bandwidth make it a good fit for digitizing intermediate-frequency radar and lidar return signals. Its pipelined architecture provides the spurious-free dynamic range needed to resolve small targets against clutter. Dual simultaneous channels allow capture of orthogonal polarizations or down-converted I/Q pairs in a single device, simplifying receiver architecture. LVDS outputs deliver data deterministically to a downstream FPGA for matched-filter pulse compression.
Được đề xuất
Test and Measurement Instrumentation
For oscilloscope, spectrum-analyzer, and signal-analyzer IF digitizer cards, the PADC32J45IRGZT provides the bandwidth and dynamic range needed to digitize IF signals above 100 MHz with 14-bit precision. Its dual channels enable parallel processing of two signal paths or simultaneous time-aligned capture of trigger and main inputs. The SPI configuration port allows automated self-calibration routines, while the LVDS interface feeds high-speed FPGA signal-processing pipelines.
Được đề xuất
Industrial Inspection Imaging
In industrial X-ray, computed tomography, and machine-vision inspection systems, the PADC32J45IRGZT's dual 160 MSPS channels digitize line-scan sensor outputs at high speed, capturing fine detail without motion artifacts. The 14-bit resolution preserves grayscale depth required for defect detection and metrology. Differential analog inputs reject switching noise from motor drives and high-current stages common in factory environments, while the exposed thermal pad provides robust thermal dissipation in enclosed industrial enclosures.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PADC32J45IRGZT — 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 | ADC34J45IRGZR | PADC32J45IRGZR | ADS42LB49IRGZR | ADC34J25IRGZR | ADC32J45IRGZR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 48-VQFN (RGZ) 7x7 | 48-VQFN (RGZ) 7x7 - same | 48-VQFN (RGZ) 7x7 - same | 48-VQFN (RGZ) 7x7 - same | 48-VQFN (RGZ) 7x7 - same | 48-VQFN (RGZ) 7x7 - same |
| Resolution | 14 bit | 14 bit | 14 bit | 14 bit | 12 bit | 12 bit |
| Sample Rate | 160 MSPS | 160 MSPS | 160 MSPS | 250 MSPS | 125 MSPS | 160 MSPS |
| Number of Channels | 2 | 2 | 2 | 2 | 2 | 2 |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
| Digital Output | LVDS | LVDS | LVDS | LVDS | LVDS | LVDS |
| Configuration Interface | SPI | SPI | SPI | SPI | SPI | SPI |
| Automotive Grade | No | No | No | No | No | No |
Bảo phân biệt quan trọng
- Higher resolution than 12-bit alternatives at same 160 MSPS sample rate (vsADC32J45IRGZR)
- Higher sample rate than 12-bit 125 MSPS ADC34J25IRGZR (vsADC34J25IRGZR)
- Lower power dissipation than ADS42LB49IRGZR at lower sample rate (vsADS42LB49IRGZR)
Ghi chú thiết kế
Place all AVDD, DVDD, and DRVDD decoupling capacitors within 2 mm of their respective supply pins, using 0.1 uF X7R ceramics in parallel with 10 uF bulk capacitors. The exposed thermal pad (pin 49) MUST be soldered to a continuous ground plane on the top layer, with at least 8 thermal vias (0.3 mm drill, 0.5 mm pitch) stitching the pad to internal ground planes. Route the 160 MHz differential clock with 100 ohm differential impedance and length-matched within 0.5 mm to minimize jitter that directly degrades SNR.
Keep LVDS output traces short (under 50 mm to the FPGA) and maintain 100 ohm differential impedance. Route LVDS pairs on an inner stripline layer with continuous ground reference above and below. Avoid routing LVDS across split ground planes or near switching power converter edges; ground bounce couples directly into the data eye. Terminate LVDS pairs at the receiver with a 100 ohm resistor across the pair, placed as close to the FPGA pins as possible.
Estimated: at full 160 MSPS dual-channel operation with 1.8 V analog/digital supplies, the device dissipates approximately 0.6-0.8 W into the exposed thermal pad. The 48-VQFN (7x7 mm) with a properly stitched ground pad typically achieves theta_JA of 25-30 C/W, yielding roughly 18-24 C junction rise at 1 W. Use a minimum 4-layer PCB with a solid ground plane beneath the package, and avoid placing the device near other high-power components. For enclosed industrial housings, consider thermal vias to an internal copper pour to keep junction below 105 C.
Do not float the RESET pin - tie it through a 10 kohm pull-up to DVDD to avoid spurious reset during power-up. Ensure the SPI port is not driven by another master during device initialization, or use a high-Z state until SEN is asserted. Avoid capacitive loading greater than 5 pF on the analog inputs, which degrades input bandwidth and increases distortion. Do not exceed the absolute maximum analog input voltage; the differential input protection diodes can forward-bias and degrade linearity if exceeded even momentarily.
Thông tin tuân thủ
RoHS compliant per TI product page. Not AEC-Q100 qualified; for automotive applications consider AEC-Q100 qualified ADCs from TI's automotive portfolio. Lead-free reflow compatible. Halogen-free status not explicitly listed in the verified web data.
