ADS901E/1KG4 - 10-Bit 20MSPS 3V Pipelined ADC | Texas Instruments
MPN: ADS901E/1KG4 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.42 | $7.42 |
| 10 | $6.68 | $66.80 |
| 100 | $5.61 | $561.00 |
| 500 | $4.85 | $2,425.00 |
| 1,000 | $4.12 | $4,120.00 |
ADS901E/1KG4 Overview
A pipelined ADC is a high-speed converter architecture that uses multiple low-resolution flash stages connected in series, with each stage resolving a portion of the input on successive clock cycles. The pipelined topology (ADC -> pipelined ADC -> high-speed data converter -> data acquisition IC -> signal chain IC) is the dominant choice for sample rates from 5 MSPS to several hundred MSPS because it balances resolution, speed, and power efficiency. The ADS901 belongs to TI's SpeedPlus family, optimized for low-voltage, low-power applications such as portable imaging, digital communication basebands, and consumer video.
Key features include 10-bit resolution, 20 MSPS maximum sample rate, 3V single-supply operation, an industrial -40C to +85C temperature range, and a pipelined converter type. The parallel CMOS-compatible output interface simplifies connection to ASICs, FPGAs, and DSPs. The wide-bandwidth track/hold front end preserves signal integrity well beyond the Nyquist frequency, and the full-scale input range is set by external reference resistors to optimize dynamic range for a given signal source.
Typical applications include digital still cameras, digital video camcorders, set-top box video digitizers, communications baseband processing, and portable test equipment. The 3V supply and 60 mW power make it particularly attractive for battery-powered or thermally constrained designs where high-speed conversion is required without the bulk of a 5V analog front end.
When designing with the ADS901, ensure the analog input is AC-coupled or level-shifted to remain within the input common-mode range, and place the external reference decoupling capacitors as close to the REF pin as possible. Use a continuous ground plane under the device to minimize digital feedthrough into the analog section, and follow TI's recommended layout in the datasheet for optimal SFDR performance. This page synthesizes distributor pricing, drop-in alternatives, and design notes not found on a typical distributor listing.
Drop-in alternatives for ADS901E/1KG4 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ADS901E/1KG4 (same form factor and footprint) — differing in Package, Input Type, Architecture, Sample Rate, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADS901E/1K
✅ Drop-In✓ In Stock
$2.59 / Unit
View Datasheet →ADS902E/1KG4
✅ Drop-In📋 Reference alternative (not in catalog)
ADS900E/1KG4
✅ Drop-In📋 Reference alternative (not in catalog)
ADS901E/1K
✅ Drop-In✓ In Stock
$2.59 / Unit
View Datasheet →ADS901E/1KG4G4
✅ Drop-In📋 Reference alternative (not in catalog)
ADS902E
✅ Drop-In📋 Reference alternative (not in catalog)
ADS901E/1KG4 Maximum Ratings & Electrical Characteristics
| Resolution | 10 bit |
| Number of Inputs | 1 |
| Sample Rate | 20 MSPS |
| Converter Type | Pipelined (SpeedPlus) |
| Supply Voltage | +3 V (nominal) |
| Input Configuration | Single-Ended or Differential |
| Data Interface | Parallel |
| Package | 28-SSOP (5.30 mm body width) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| Temperature Grade | Industrial |
| Power Dissipation | 60 mW (typical at 20 MSPS) |
| Terminal Form | Gull Wing |
| Number of Terminals | 28 |
| Package Code | SSOP |
| Packaging | Tape & Reel (TR) |
| RoHS Status | Compliant |
| Architecture | Track/Hold + 10-bit quantizer |
ADS901E/1KG4 Pin Configuration
| Pin 1 | AVDD — Analog supply (+3V) |
| Pin 2 | IN — Analog input (single-ended or one side of differential) |
| Pin 3 | INB — Complementary analog input (differential mode) |
| Pin 4 | REFT — Top reference decoupling |
| Pin 5 | REFB — Bottom reference decoupling |
| Pin 6 | REFIO — Reference input/output |
| Pin 7 | AGND — Analog ground |
| Pin 8 | OE — Output enable (active low) |
| Pin 9 | CLK — Sample clock input |
| Pin 10 | DVDD — Digital supply (+3V) |
| Pin 11 | DGND — Digital ground |
| Pin 12 | D9 — Data output bit 9 (MSB) |
| Pin 13 | D8 — Data output bit 8 |
| Pin 14 | D7 — Data output bit 7 |
| Pin 15 | D6 — Data output bit 6 |
| Pin 16 | D5 — Data output bit 5 |
| Pin 17 | D4 — Data output bit 4 |
| Pin 18 | D3 — Data output bit 3 |
| Pin 19 | D2 — Data output bit 2 |
| Pin 20 | D1 — Data output bit 1 |
| Pin 21 | D0 — Data output bit 0 (LSB) |
| Pin 22 | NC — Not connected (per datasheet) |
| Pin 23 | PWDN — Power-down input |
| Pin 24 | STBY — Standby input |
| Pin 25 | NC — Not connected (per datasheet) |
| Pin 26 | NC — Not connected (per datasheet) |
| Pin 27 | NC — Not connected (per datasheet) |
| Pin 28 | AVDD — Analog supply (+3V) |
Typical Applications
ADS901E/1KG4 is suitable for 7 applications: Digital Still Camera Image Pipeline, Digital Video Camcorder ADC, Communications Baseband Receiver, Set-Top Box Video Digitizer, Portable Test and Measurement Front-End, Industrial Ultrasound Imaging Receive Channel, Embedded Vision and Machine Vision Digitizer.
Digital Still Camera Image Pipeline
The ADS901E/1KG4 digitizes the analog output of the CCD/CIS sensor front-end at up to 20 MSPS with 10-bit resolution, providing enough headroom for color interpolation and gamma correction. Its 3V supply and 60 mW power consumption suit compact camera designs where battery life and thermal budget are constrained. The wide-bandwidth track/hold preserves high-frequency detail, and the parallel CMOS interface connects directly to the image signal processor. Place 0.1uF and 10uF decoupling close to AVDD/DVDD, and follow a continuous ground plane to minimize digital switching noise coupling into the analog input.
Recommended
Digital Video Camcorder ADC
The ADS901E/1KG4 digitizes composite or component analog video at 20 MSPS, sufficient for SD video digitizer applications and the front end of some progressive-scan DVD recorders. The 10-bit quantizer preserves luminance and chroma dynamic range for downstream color-space conversion. The pipelined architecture delivers one sample per clock, simplifying timing closure against the video line-locked clock. Use a differential analog front-end for best common-mode rejection, and route the parallel output bus with matched-length traces to the encoder ASIC.
Recommended
Communications Baseband Receiver
The ADS901E/1KG4 digitizes the I or Q baseband signal at 20 MSPS in narrowband or short-range wireless receivers operating in the sub-2 GHz band. The 3V single-supply and 60 mW dissipation match the power budget of handheld radio designs. The pipelined core delivers one conversion per clock with deterministic latency, which is critical for receiver channel equalization. Drive the input differentially from a baseband op-amp output to maximize SFDR, and provide a clean 2.0V external reference for full-scale calibration.
Recommended
Set-Top Box Video Digitizer
Inside a set-top box or video capture card, the ADS901E/1KG4 converts the baseband analog video input into a 10-bit digital stream for MPEG encoding or display processing. The 20 MSPS rate covers SD resolutions with margin for video pre-processing. The 28-SSOP package fits standard capture card layouts, and the parallel interface plugs into common video decoder ASICs. Use a low-jitter crystal oscillator to drive the sample clock and meet the 10-bit SNR floor at full input bandwidth.
Recommended
Portable Test and Measurement Front-End
Handheld oscilloscope, data-acquisition, or signal-analyzer front-ends use the ADS901E/1KG4 to digitize input signals at 20 MSPS with 10-bit resolution. The 3V supply enables battery-powered designs and the 60 mW dissipation keeps thermal design simple. The pipelined architecture delivers real-time sample conversion with deterministic latency, suitable for trigger and time-base circuits. Add a differential input driver and an anti-alias filter ahead of the ADC to maximize usable bandwidth.
Recommended
Industrial Ultrasound Imaging Receive Channel
In single-channel or low-channel-count ultrasound receive paths, the ADS901E/1KG4 digitizes the conditioned echo signal at 20 MSPS, which covers shallow-depth imaging modes. The industrial -40C to +85C temperature grade handles the demanding environmental profile of medical or industrial imaging equipment. The pipelined core provides a deterministic sample rate for matched-filter beamforming in the digital domain. Power-supply rejection is high enough to allow direct connection to a switching pre-regulator, provided adequate decoupling is used at the device pins.
Recommended
Embedded Vision and Machine Vision Digitizer
Compact machine-vision modules use the ADS901E/1KG4 to convert the analog output of a line-scan or area-scan sensor into a 10-bit digital stream for downstream FPGA or DSP processing. The 3V supply, 60 mW dissipation, and 28-SSOP package fit the form factor of small industrial cameras and embedded vision cards. The pipelined architecture delivers deterministic latency, simplifying time-of-flight and 3D-vision pipelines. Use a synchronous FIFO on the digital side to absorb the high-speed parallel data bursts into the processor's slower interface.
Recommended
Recommended Products Summary
Engineering reference data for ADS901E/1KG4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADS901E/1K | ADS902E/1KG4 | ADS900E/1KG4 | ADS901E | ADS901E/1KG4G4 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit |
| Sample Rate | 20 MSPS | 20 MSPS | 30 MSPS | 20 MSPS | 20 MSPS | 20 MSPS |
| Supply Voltage | +3 V | +3 V | +3 V | +5 V | +3 V | +3 V |
| Power Dissipation | 60 mW | 60 mW | 85 mW | 75 mW | 60 mW | 60 mW |
| Converter Type | Pipelined (SpeedPlus) | Pipelined (SpeedPlus) | Pipelined (SpeedPlus) | Pipelined (SpeedPlus) | Pipelined (SpeedPlus) | Pipelined (SpeedPlus) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Data Interface | Parallel | Parallel | Parallel | Parallel | Parallel | Parallel |
| RoHS Status | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant (green) |
Key Differentiators
- 30 MSPS upgrade available in same footprint (vs ADS902E/1KG4)
- Industrial -40C to +85C temperature grade (vs ADS901E/1K (commercial grade))
- Tape & Reel packaging with full traceability (vs ADS901E (bulk pack))
Design Notes
Use separate AVDD and DVDD supplies decoupled with a ferrite bead, or derive both from a clean +3V rail with a low-noise LDO such as the TPS7A4701RGWR. Place 0.1uF and 10uF ceramic capacitors as close as possible to each supply pin. Estimated: at 20 MSPS the ADC draws about 20 mA from AVDD plus 5 mA from DVDD; verify headroom on the upstream regulator during worst-case input conditions.
Use a continuous, unbroken ground plane under the device to provide a low-impedance return path for the high-speed digital output bus. Keep the analog input trace short, surrounded by ground, and routed away from the parallel digital outputs to minimize digital feedthrough. Place the REFT and REFB decoupling capacitors within 50 mils of the device pins. Following these rules preserves the rated SFDR and SNR.
Avoid driving the analog input beyond the input common-mode range specified in the datasheet; overdrive can cause long-term damage or input stage saturation that persists across conversions. Do not leave the PWDN or STBY pins floating - tie them to the active level with a defined logic level. Verify the sample clock is a low-jitter source: at 10 bits of resolution, total integrated jitter should be kept below 2-3 ps RMS to avoid degrading the SNR floor.
Series-terminate the 10-bit parallel data bus near the ADC to suppress reflections, especially when traces exceed 25 mm or when the bus connects to an ASIC on a different power plane. Use the OE pin to tri-state the bus during board test or to share the bus with another peripheral. Confirm setup and hold times against the receiver ASIC's timing specification.
Compliance Information
RoHS and REACH compliance per TI product page; lead-free / halogen-free / green packaging denoted by G4 suffix family. The /1KG4 suffix denotes Tape & Reel (TR). Not AEC-Q100 qualified; not suitable for automotive safety-critical applications.