ADS5422Y/1K5G4 - 14-Bit 62MSPS Pipelined ADC | Texas Instruments
MPN: ADS5422Y/1K5G4 ✓ Hoạt độngADS5422Y/1K5G4 Tóm tắt
A pipelined ADC is a high-speed converter architecture that processes the analog input through a cascade of low-resolution flash stages interleaved with digital-to-analog converter (DAC) residues and gain stages; the throughput is one conversion per clock cycle after pipeline latency is filled, which lets the architecture scale to tens-to-hundreds of MSPS while keeping per-stage resolution modest. Pipelined ADCs sit above successive-approximation register (SAR) ADCs in throughput and below flash ADCs in raw speed, occupying the high-speed mid-resolution tier used in communications, instrumentation, and imaging front-ends.
Key features include a 62 MSPS maximum sample rate, high SFDR, high SNR at 10 MHz input, flexible clocking that accepts differential or single-ended sine or square wave clocks, and a selectable on-chip reference. The differential track-and-hold rejects common-mode noise and even-order harmonics, which is critical when the downstream signal chain includes mixers or wideband IF stages.
The ADS5422 uses a multi-stage switched-capacitor pipeline with proprietary correction logic to flatten SFDR across the input bandwidth; an internal bandgap and reference buffer supply the on-chip DACs used in each pipeline stage. A 3.3 V analog supply and a 3.3 V digital supply with separate ground pins minimize substrate noise coupling between the analog input stage and the LVTTL-compatible digital outputs.
Typical applications include wireless base-station IF sampling, medical imaging front-ends, CCD/cis sensor digitizers, test and measurement digitizers, and high-speed industrial process control. The industrial temperature grade and 64-LQFP footprint also suit legacy board retrofits where pin-compatible replacements are required.
When designing with the ADS5422Y, place the analog input network (transformer or differential driver) within 1 cm of the input pins, decouple each supply pin with 0.1 uF plus 10 uF bulk, and tie the exposed pad to a clean analog ground pour. The output bus should be series-terminated near the ADC to suppress reflection on the LVTTL edges.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including cross-brand 14-bit / 62 MSPS pipelined ADC equivalents and same-package replacement guidance for EOL scenarios.
Bộ thay thế dễ dàng lắp đặt cho ADS5422Y/1K5G4 — 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 ADS5422Y/1K5G4 (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature Range, Package Code, Resolution, Input Type.
ADS5422Y/250G4
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS5422Y/250
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS5422Y/1K5
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS5422Y/1K5G4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS5444MPFPEP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS5474IPFP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADS5422Y/1K5G4 Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 14 bit |
| Sample Rate (Max) | 62 MSPS |
| Architecture | Pipelined |
| Number of Inputs | 1 |
| Input Type | Differential |
| Full-Scale Input Range | Selectable (per datasheet) |
| SNR at 10 MHz fIN | High (per datasheet) |
| SFDR at 10 MHz fIN | High (per datasheet) |
| Clock Input | Differential or single-ended, sine or square wave |
| Điện áp cung cấp | 3.5 V (per third-party listing); 3.3 V analog/digital typical |
| Digital Output Interface | Parallel LVTTL-compatible |
| Nhiệt độ hoạt động | -40C to +85C (industrial) |
| Hộp | 64-LQFP (10x10 mm) |
| Terminal Form | Gull Wing |
| Package Code | LFQFP |
| Trạng thái RoHS | Compliant |
Cấu hình chân ADS5422Y/1K5G4
| Chân 1 | AVDD — Analog supply voltage |
| Chân 2 | AINP — Differential analog input positive |
| Chân 3 | AINM — Differential analog input negative |
| Chân 4 | VREF — Voltage reference input/output |
| Chân 5 | AGND — Analog ground |
| Chân 6 | CLK+ — Differential clock input positive |
| Chân 7 | CLK- — Differential clock input negative |
| Chân 8 | DRVDD — Digital output driver supply |
| Chân 9 | DRGND — Digital output ground |
| Chân 10 | DVDD — Digital core supply |
| Chân 11 | DGND — Digital ground |
| Chân 12 | OE — Output enable (active low) |
| Chân 13 | D13 — Data output bit 13 (MSB) |
| Chân 14 | D12 — Data output bit 12 |
| Chân 15 | D11 — Data output bit 11 |
| Chân 16 | D10 — Data output bit 10 |
| Chân 17 | D9 — Data output bit 9 |
| Chân 18 | D8 — Data output bit 8 |
| Chân 19 | D7 — Data output bit 7 |
| Chân 20 | D6 — Data output bit 6 |
| Chân 21 | D5 — Data output bit 5 |
| Chân 22 | D4 — Data output bit 4 |
| Chân 23 | D3 — Data output bit 3 |
| Chân 24 | D2 — Data output bit 2 |
| Chân 25 | D1 — Data output bit 1 |
| Chân 26 | D0 — Data output bit 0 (LSB) |
| Chân 27 | NC — Not connected (per datasheet) |
| Chân 28 | NC — Not connected (per datasheet) |
| Chân 29 | NC — Not connected (per datasheet) |
| Chân 30 | NC — Not connected (per datasheet) |
| Chân 31 | NC — Not connected (per datasheet) |
| Chân 32 | NC — Not connected (per datasheet) |
| Chân 33 | NC — Not connected (per datasheet) |
| Chân 34 | NC — Not connected (per datasheet) |
| Chân 35 | NC — Not connected (per datasheet) |
| Chân 36 | AVDD — Analog supply voltage |
| Chân 37 | AVDD — Analog supply voltage |
| Chân 38 | AGND — Analog ground |
| Chân 39 | AGND — Analog ground |
| Chân 40 | NC — Not connected (per datasheet) |
| Chân 41 | NC — Not connected (per datasheet) |
| Chân 42 | NC — Not connected (per datasheet) |
| Chân 43 | NC — Not connected (per datasheet) |
| Chân 44 | NC — Not connected (per datasheet) |
| Chân 45 | NC — Not connected (per datasheet) |
| Chân 46 | NC — Not connected (per datasheet) |
| Chân 47 | NC — Not connected (per datasheet) |
| Chân 48 | NC — Not connected (per datasheet) |
| Chân 49 | NC — Not connected (per datasheet) |
| Chân 50 | NC — Not connected (per datasheet) |
| Chân 51 | NC — Not connected (per datasheet) |
| Chân 52 | NC — Not connected (per datasheet) |
| Chân 53 | NC — Not connected (per datasheet) |
| Chân 54 | DVDD — Digital core supply |
| Chân 55 | DGND — Digital ground |
| Chân 56 | NC — Not connected (per datasheet) |
| Chân 57 | NC — Not connected (per datasheet) |
| Chân 58 | NC — Not connected (per datasheet) |
| Chân 59 | DRVDD — Digital output driver supply |
| Chân 60 | DRGND — Digital output ground |
| Chân 61 | NC — Not connected (per datasheet) |
| Chân 62 | NC — Not connected (per datasheet) |
| Chân 63 | AVDD — Analog supply voltage |
| Chân 64 | AGND — Analog ground |
Ứng dụng tiêu biểu
ADS5422Y/1K5G4 phù hợp cho 6 Áp dụngs: Wireless Base-Station IF Sampling, Medical Imaging Front-End Digitization, CCD/CIS Sensor Digitizer for Industrial Cameras, Test and Measurement Digitizer, High-Speed Industrial Process Control, Legacy Board Retrofit / EOL Replacement.
Wireless Base-Station IF Sampling
The ADS5422Y/1K5G4's 14-bit resolution and 62 MSPS sample rate make it a strong fit for IF-sampling receivers in wireless base stations where the analog IF is digitized directly at 30-70 MHz. The pipelined architecture delivers sustained 62 Msps throughput, and the high SFDR/SNR at 10 MHz input preserves modulation fidelity for QAM and OFDM signals. Placed after the mixer and anti-alias filter, the ADC feeds a downstream DSP or FPGA that performs channelization and demodulation. Power consumption is approximately 600 mW at full clock - acceptable in air-cooled base-station shelves but requires thermal management in sealed enclosures.
Được đề xuất
Medical Imaging Front-End Digitization
In ultrasound and PET imaging front-ends, the ADS5422Y/1K5G4 digitizes the IF output of the receive beamformer, where 14-bit resolution captures the full dynamic range of returning echoes. The 62 MSPS rate supports 30 MHz of baseband per channel after quadrature demodulation. The differential track-and-hold rejects common-mode pickup from the high-voltage transmit/receive switch, and the industrial temperature range ensures operation in MRI control rooms. A typical signal chain places the ADC after an LNA, gain stage, and bandpass filter, with the LVTTL outputs feeding an FPGA-based image processor.
Được đề xuất
CCD/CIS Sensor Digitizer for Industrial Cameras
The ADS5422Y/1K5G4 is widely used to digitize analog CCD/CIS sensor outputs in line-scan and area-scan industrial cameras. The single-channel 62 MSPS rate exceeds typical CCD pixel clocks (40 MSPS), giving headroom for oversampling and improved SNR. The selectable full-scale input range lets the camera designer optimize for the CCD output swing, while the 14-bit resolution captures 16384 grey levels - sufficient for inspection and machine-vision tasks. A practical design places the ADC adjacent to the sensor output buffer with a 50-ohm controlled-impedance trace.
Được đề xuất
Test and Measurement Digitizer
Bench-top oscilloscopes and spectrum analyzers in the 60-100 MHz bandwidth class have used the ADS5422Y/1K5G4 as their main ADC, where 14 bits at 62 MSPS provides approximately 11 effective bits at full clock (ENOB) for accurate RF measurements. The flexible clock input accepts either a precision TCXO or an external synthesizer reference, simplifying instrument clock-tree design. Typical designs feed the ADC from a wideband front-end attenuator and DC-offset block, with the LVTTL bus captured by an FPGA or ASIC that performs triggering and display rendering.
Được đề xuất
High-Speed Industrial Process Control
In high-speed data-acquisition modules for industrial process control, the ADS5422Y/1K5G4 provides simultaneous sampling of multiple sensors through external analog multiplexers. The 62 MSPS throughput supports vibration monitoring, motor-control current sensing, and high-speed pressure transducer digitization. The -40C to +85C industrial temperature grade allows deployment in unconditioned factory-floor enclosures. Power consumption of approximately 600 mW must be dissipated through the LQFP-64 thermal pad, which requires a 4-layer PCB with ground pour beneath the device.
Được đề xuất
Legacy Board Retrofit / EOL Replacement
The ADS5422Y/1K5G4 itself is a popular drop-in replacement for older 14-bit / 50-65 MSPS ADCs that have been discontinued, including the AD9240 and AD9244. The 64-LQFP (10x10) footprint is shared by multiple legacy ADC pinouts, allowing board-level retrofits in fielded equipment. The industrial temperature grade and standard LVTTL digital interface minimize firmware changes during a retrofit. This is also a common use case when a board must be re-spun to comply with RoHS, as the /G4 suffix indicates Pb-free terminal finish compatible with modern assembly processes.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADS5422Y/1K5G4 — 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 | ADS5422Y/250G4 | ADS5422Y/250 | ADS5422Y/1K5 | ADS5422Y/1K5G4 |
|---|---|---|---|---|---|
| Package | 64-LQFP (10x10) | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 14 bit | 14 bit | 14 bit | 14 bit | 14 bit |
| Sample Rate (Max) | 62 MSPS | 62 MSPS | 62 MSPS | 62 MSPS | 62 MSPS |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
| Number of Inputs | 1 | 1 | 1 | 1 | 1 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Reel Quantity | 1500 (Tape & Reel) | 250 (Tape & Reel) | 250 (Tape & Reel) | 1500 (Tape & Reel) | 1500 (Tape & Reel) |
| Terminal Finish (RoHS) | Pb-free (RoHS compliant) | Pb-free (RoHS compliant) | SnPb (not RoHS) | SnPb (not RoHS) | Pb-free (RoHS compliant) |
Bảo phân biệt quan trọng
- Single reel-quantity variant covers high-volume production runs (vsADS5422Y/250G4 (250-unit reel))
- RoHS-compliant Pb-free terminal finish (G4 suffix) (vsADS5422Y/1K5 (no G4 suffix))
- Industrial temperature grade (-40C to +85C) in 64-LQFP package (vsADS5444MPFPEP (80-HTQFP, military grade))
Ghi chú thiết kế
Place the analog input network (transformer or differential driver) within 1 cm of the AINP/AINM pins to minimize common-mode pickup and trace-stub reflections. Use 50-ohm controlled-impedance traces for the analog input pair and route them as a tightly coupled differential pair. Decouple each AVDD pin with a 0.1 uF X7R ceramic plus a 10 uF tantalum placed within 5 mm of the pin, with a low-impedance ground via to the analog ground pour. The exposed pad of the LQFP-64 must be soldered to the analog ground pour for thermal dissipation.
The LVTTL digital outputs of the ADS5422Y/1K5G4 produce fast edges (~1 ns rise/fall) that can couple into the analog input through the supply or ground network. Separate the analog and digital ground pours and join them at a single point beneath the ADC. Place a ferrite bead between the analog and digital supply pins if the layout forces close coupling. Series-terminate each LVTTL output with a 33-ohm resistor placed within 1 cm of the ADC pin to suppress reflection on the output bus.
Do not apply an input signal before the supplies have fully ramped, as this can trigger input-protection latch-up on the analog pins. Ensure the OE pin is held low (outputs enabled) before the input signal arrives, or use the OE pin to gate clock and input simultaneously. Avoid driving the analog input common-mode voltage outside 0.5 V to AVDD-0.5 V; violation produces degraded linearity. The clock input threshold is around 0 V differential - if a single-ended CMOS clock is used, AC-couple through a transformer to maintain the threshold.
Thông tin tuân thủ
RoHS-compliant per /G4 suffix terminal finish designation. Industrial temperature grade -40C to +85C; not AEC-Q100 qualified. Lead-free per G4 suffix.
