ADS901E/1K - 10-Bit 20MSPS +3V ADC | Texas Instruments
N.º da peça: ADS901E/1K ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.2 | $4,20 |
| 10 | $3.78 | $37,80 |
| 100 | $3.36 | $336,00 |
| 500 | $2.95 | $1.475,00 |
| 1.000 | $2.59 | $2.590,00 |
ADS901E/1K Visão geral
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.
Alternativas drop-in para ADS901E/1K — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ADS901E/1K (mesmo formato e footprint) — diferindo em Package, Input Type, Architecture, Analog Supply Voltage, RoHS Status.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ADS901E
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ADS901E/2K
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ADS901E/1KG4
✅ Drop-In✓ Em estoque
$4.12 / unidade
Ver ficha técnica →ADS900AM
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ADS902E
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TLV1562IDWR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ADS901E/1K Classificações máximas e características elétricas
| Resolução | 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) |
| Encapsulamento | SSOP-28 (DB) |
| Faixa de temperatura de operação | -40C to +85C (Industrial) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Lead-Free | Yes |
Configuração de pinos do ADS901E/1K
| Pino 1 | AVDD — Analog +3V supply |
| Pino 2 | REFIN — External reference input |
| Pino 3 | REFCAP — Reference decoupling capacitor |
| Pino 4 | REFGND — Reference ground return |
| Pino 5 | IN+ — Analog non-inverting input |
| Pino 6 | IN- — Analog inverting input |
| Pino 7 | AGND — Analog ground |
| Pino 8 | AGND — Analog ground |
| Pino 9 | NC — Not connected (per datasheet) |
| Pino 10 | PD — Power-down control input |
| Pino 11 | CLAMP — Input clamp bias |
| Pino 12 | AGND — Analog ground |
| Pino 13 | AGND — Analog ground |
| Pino 14 | AVDD — Analog +3V supply |
| Pino 15 | CLK — Sample clock input |
| Pino 16 | CLK_COMPL — Complementary clock input (NC for single-end clock) |
| Pino 17 | DGND — Digital ground |
| Pino 18 | DGND — Digital ground |
| Pino 19 | DVDD — Digital +3V supply |
| Pino 20 | DVDD — Digital +3V supply |
| Pino 21 | D9 — Bit 9 output (MSB) |
| Pino 22 | D8 — Bit 8 output |
| Pino 23 | D7 — Bit 7 output |
| Pino 24 | D6 — Bit 6 output |
| Pino 25 | D5 — Bit 5 output |
| Pino 26 | D4 — Bit 4 output |
| Pino 27 | D3 — Bit 3 output |
| Pino 28 | D0-D2 — Lower data bits and output ground references grouped per datasheet |
Aplicações típicas
ADS901E/1K é adequado para 7 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ADS901E/1K — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- 1000-piece reel baked-in industrial-grade part (vs ADS901E (tray))
- Drop-in same-package higher throughput upgrade path (vs ADS902E)
- Lower active power than 12-bit predecessor family (vs TLV1562IDWR)
- 350 MHz track-and-hold for IF-sampling capability (vs ADS902E (also 350 MHz T/H))
Notas de projeto
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.
Informações de conformidade
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.
