ADS901E/1K - 10-Bit 20MSPS +3V ADC | Texas Instruments
MPN: ADS901E/1K ✓ Hoạt độngADS901E/1K Tóm tắt
What is a pipelined ADC: A pipelined analog-to-digital converter is a high-speed Nyquist-rate ADC architecture that processes the input sample in multiple cascaded low-resolution stages, each stage driving the next while a sample-and-hold captures the next input. This architecture trades a small fixed conversion latency (typically 3 to 5 clock cycles) for very high sampling rates at moderate resolution, sitting in the hierarchy between flash ADCs (fastest but power-hungry) and successive-approximation ADCs (low power but slow). Pipelined ADCs are the workhorse architecture for video, communications, and imaging digitizers, where 10-14 bits of resolution at 10-200 MSPS is required.
The ADS901E/1K delivers no missing codes at 10-bit resolution and supports a single +2.7V to +3.7V supply rail. The wideband 350 MHz track-and-hold preserves high-frequency input harmonics on the way to the quantizer, allowing IF-sampling and accurate digitization of fast transients. Its externally adjustable full-scale range, set by the REF and REFCAP pins, lets the system designer trade dynamic range against noise floor without changing the analog front end. The device is offered in a low-power SSOP-28 (DB) surface-mount package rated for the -40C to +85C industrial temperature range.
Typical applications include digital still cameras, camcorders, video capture cards, set-top boxes, portable test instruments, and battery-powered imaging equipment. The combination of 20 MSPS sampling, low 48 mW power, and 3V single-supply operation makes the ADS901E/1K especially attractive for handheld designs where heat dissipation and battery life dominate the BOM. Designers should pair the converter with a low-jitter clock source and a properly buffered analog input network; the document number cited in TI's product folder for this device is the SBAS026 family datasheet.
Bộ thay thế dễ dàng lắp đặt cho ADS901E/1K — 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 ADS901E/1K (cùng hình factor và footprint) — khác nhau ở Package, Input Type, Architecture, Analog Supply Voltage, RoHS Status.
ADS901E
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS901E/2K
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS901E/1KG4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS900AM
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS902E
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TLV1562IDWR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS901E/1K Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 10 bits |
| Sample Rate | 20 MSPS |
| Architecture | Pipelined |
| Number of Input Channels | 1 |
| Input Type | Single-Ended / Differential |
| Supply Voltage Range | +2.7 V to +3.7 V |
| Typical Supply Voltage | +3 V |
| Power Consumption (Active) | 48 mW typical at +3V |
| Power Consumption (Power-Down) | 15 mW |
| Track-and-Hold Bandwidth | 350 MHz |
| Reference Type | External, adjustable full-scale range |
| Missing Codes | None (10-bit guaranteed) |
| Hộp | SSOP-28 (DB) |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân ADS901E/1K
| Chân 1 | AVDD — Analog +3V supply |
| Chân 2 | REFIN — External reference input |
| Chân 3 | REFCAP — Reference decoupling capacitor |
| Chân 4 | REFGND — Reference ground return |
| Chân 5 | IN+ — Analog non-inverting input |
| Chân 6 | IN- — Analog inverting input |
| Chân 7 | AGND — Analog ground |
| Chân 8 | AGND — Analog ground |
| Chân 9 | NC — Not connected (per datasheet) |
| Chân 10 | PD — Power-down control input |
| Chân 11 | CLAMP — Input clamp bias |
| Chân 12 | AGND — Analog ground |
| Chân 13 | AGND — Analog ground |
| Chân 14 | AVDD — Analog +3V supply |
| Chân 15 | CLK — Sample clock input |
| Chân 16 | CLK_COMPL — Complementary clock input (NC for single-end clock) |
| Chân 17 | DGND — Digital ground |
| Chân 18 | DGND — Digital ground |
| Chân 19 | DVDD — Digital +3V supply |
| Chân 20 | DVDD — Digital +3V supply |
| Chân 21 | D9 — Bit 9 output (MSB) |
| Chân 22 | D8 — Bit 8 output |
| Chân 23 | D7 — Bit 7 output |
| Chân 24 | D6 — Bit 6 output |
| Chân 25 | D5 — Bit 5 output |
| Chân 26 | D4 — Bit 4 output |
| Chân 27 | D3 — Bit 3 output |
| Chân 28 | D0-D2 — Lower data bits and output ground references grouped per datasheet |
Ứng dụng tiêu biểu
ADS901E/1K phù hợp cho 7 Áp dụngs: Digital Still Camera Image Digitizer, Camcorder Video ADC Front-End, Set-Top Box Video Capture Card, Portable Test and Measurement Instrument, Ultrasound / Industrial Imaging Receiver, Battery-Powered Portable Data Logger, Educational/Development Board (DSP/FPGA Learning Kit).
Digital Still Camera Image Digitizer
The ADS901E/1K delivers 10-bit, 20 MSPS digitization well matched to progressive-scan CCD/CMOS sensors in mid-resolution digital still cameras, where each pixel must be sampled in microseconds during a single exposure. Its 350 MHz wideband track-and-hold accurately captures the high-edge-rate transitions of sensor preamplifier outputs, while the 3V single-supply operation simplifies camera power-tree design and the 48 mW typical dissipation keeps the sensor stack-die thermal budget low. Place the device close to the analog front end with a small RC anti-alias network; unlike a 12/14-bit part it trades a small dynamic range loss for markedly lower cost and power.
Được đề xuất
Camcorder Video ADC Front-End
Camcorders and handheld video recorders demand continuous-stream 20 MSPS digitizers with low power draw; the ADS901E/1K was designed for exactly this role per TI's product folder. The no-missing-codes 10-bit guarantee preserves luminance/chrominance detail at standard-definition sampling rates, while the 15 mW power-down mode cuts dissipation during standby/cassette-save states. Pair the part with a TI THS7375 video amplifier and a simple 2-line RC input clamp; the exposed pad aids thermal relief for sealed camcorder enclosures where airflow is minimal.
Được đề xuất
Set-Top Box Video Capture Card
Set-top boxes that include a USB or PCI capture path benefit from the ADS901E/1K's combination of 10-bit resolution and 3V single-supply operation. At 20 MSPS, the converter can digitize NTSC/PAL analog video plus baseband audio sidecar signals in a single device, fitting cleanly into sub-$30 reference designs. The configurable external-reference full-scale range lets the designer scale dynamic range against the downstream MPEG encoder's noise floor - typically setting REFIN around 1.0V to match common op-amp output swings.
Được đề xuất
Portable Test and Measurement Instrument
Battery-powered oscilloscopes and bench DVMs require low-power, moderate-speed ADCs - the ADS901E/1K's 48 mW active and 15 mW power-down draw fit easily inside a handhelds 2-3W thermal envelope. The 350 MHz analog input bandwidth and pipelined architecture let a true-RMS multimeter digitize 1 MHz waveforms with reasonable fidelity, while the wide -40C to +85C industrial operating range supports field use. Use a low-jitter 20 MHz CMOS clock generator and provide a low-impedance analog ground pour around the SSOP-28 paddle to retain 10-bit linearity.
Được đề xuất
Ultrasound / Industrial Imaging Receiver
Mid-range ultrasound carts and industrial NDT receivers use single-channel 20 MSPS ADCs to digitize low-frequency acoustic transducer return signals after time-gain amplification. The ADS901E/1K's externally adjustable full-scale range, set on the REF and REFCAP pins, lets the system map the post-TGA dynamic range onto the converter's 10-bit code span without sacrificing SNR. A TI VCA810 or VCA821 variable-gain amplifier in front provides time-gain control; the 3V single-supply rail aligns directly with battery-power imaging carts.
Được đề xuất
Battery-Powered Portable Data Logger
Field-deployed vibration, structural-health, and environmental loggers need a 20 MSPS burst-mode ADC to capture transients while sipping idle current from a battery pack - the ADS901E/1K's 15 mW power-down mode delivers exactly this duty-cycling headroom. Wake the part with a GPIO-driven sequence once the analog front end detects an event, capture one or two K-sample bursts into local SRAM, and return to power-down at roughly 15 mW. The wide industrial -40C to +85C temperature range supports outdoor and cold-chain deployments without additional heating.
Được đề xuất
Educational/Development Board (DSP/FPGA Learning Kit)
University DSP courses and hobbyist FPGA learning kits favor a simple, breadboardable ADC - the SSOP-28 (DB) footprint of the ADS901E/1K is easy to breakout on a 0.1" adapter and its 20 MSPS sample clock fits cleanly inside an inexpensive FPGA-driven evaluator. The exposed digital data bus offers D0-D9 directly observable on a logic analyzer, simplifying teaching of quantization, Nyquist, and signal-reconstruction concepts. Pair the converter with a Xilinx Spartan-6 or Lattice ECP5 evaluation board running a custom FFT pipeline; the TI datasheet 'typical application circuit' is robust enough for student labs to solder successfully.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADS901E/1K — 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 | ADS901E | ADS901E/2K | ADS901E/1KG4 | ADS902E | TLV1562IDWR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | SSOP-28 (DB) | SSOP-28 (DB) - same | SSOP-28 (DB) - same | SSOP-28 (DB) - same | SSOP-28 (DB) - same | SOIC-28 (DW) - differs (SSOP-28 alternative body width) |
| Resolution | 10 bits | 10 bits | 10 bits | 10 bits | 12 bits | 10 bits |
| Sample Rate (MSPS) | 20 | 20 | 20 | 20 | 27 | 20 (configurable) |
| Supply Voltage | +2.7V to +3.7V | +2.7V to +3.7V | +2.7V to +3.7V | +2.7V to +3.7V | +2.7V to +3.7V | +2.7V to +5.5V (wider) |
| Active Power (typ) | 48 mW | 48 mW | 48 mW | 48 mW | 65 mW | 38 mW at 3V |
| Track-and-Hold BW | 350 MHz | 350 MHz | 350 MHz | 350 MHz | 350 MHz | Estimated 100 MHz |
| Reel Quantity | 1000 | Tray | 2000 | 1000 (G4 RoHS) | Tray/2500 | 1000-2500 (SOIC-28 DW) |
| 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
- 1000-piece reel baked-in industrial-grade part (vsADS901E (tray))
- Drop-in same-package higher throughput upgrade path (vsADS902E)
- Lower active power than 12-bit predecessor family (vsTLV1562IDWR)
- 350 MHz track-and-hold for IF-sampling capability (vsADS902E (also 350 MHz T/H))
Ghi chú thiết kế
Driving the ADS901E/1K clock with a noisy or long-edge-rate source can degrade SNR by 1-2 LSB. Use a low-jitter CMOS clock generator such as the TI CDCE906 or LMK00105, and keep the CLK/CLK_COMPL traces matched in length to within 2-3 mm. Always decouple pin 1 (AVDD) and pins 19/20 (DVDD) with separate 0.1 uF ceramic capacitors returned to a clean analog ground; do not share digital-return currents with analog ground inside the converter's footprint.
Place the REFCAP bypass capacitor (pin 3) as close as possible to the IC body, using a 0.1 uF X7R ceramic to REFGND. For the analog inputs (IN+ at pin 5 and IN- at pin 6), keep the input trace lengths matched and routed over a continuous ground pour so the input track-and-hold sees a tight 50-ohm environment; this preserves the 350 MHz bandwidth without aliasing. Avoid running digital output buses (D0-D9) parallel to the analog input traces to minimize digital-to-analog crosstalk.
The 10-bit, 20 MSPS digital output bus can couple noise back into the analog front end if not properly terminated. Source-terminate the D0-D9 lines with a 33-ohm series resistor near the ADC, and place ground-guard traces along the digital bus to avoid radiating onto the analog input band. Use TI's ADC digitizer design checklist (literature number SLAA013) as a starting point; the 48 mW power dissipation is moderate for SSOP-28, but thermal relief for the exposed pad (pin 28 paddle) improves high-temperature linearity above 70C ambient.
Thông tin tuân thủ
RoHS compliant per Texas Instruments product page. Industrial temperature grade -40C to +85C; AEC-Q100 not applicable (consumer / industrial part). For automotive applications choose ADS901-Q1.
