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Texas Instruments ADS822E/1K
- Part No.:
- ADS822E/1K
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
ADS822E/1K.pdf
- Description:
- IC ADC 10BIT PIPELINED 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,058
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Product details
Overview
ADS822E/1K from Texas Instruments is a 10-bit, 40MSPS pipelined analog-to-digital converter (ADC) operating from a single +5V supply with internal or external reference support, 60dB SNR, 72dBFS SFDR at 1MHz, and low 0.5LSB DNL - deployed in medical imaging systems requiring high-fidelity signal capture under tight power budgets.
For engineers reviewing the ADS822E/1K datasheet, ADS822E/1K pinout, ADS822E/1K application, or ADS822E/1K equivalent, this page delivers verified specifications, SSOP-28 package mapping, differential/single-ended input configuration options, real-world spectral performance data, and validated alternative ADCs for medical, test, and video digitizing designs.
Technical Context
The ADS822E/1K employs a 9-stage pipelined CMOS architecture with digital error correction logic to guarantee no missing codes and ±0.5LSB integral nonlinearity at 1MHz. Its track-and-hold supports both single-ended (1.5–3.5V range) and fully differential inputs, enabling spurious-free dynamic range optimization across frequency bands.
Timing is synchronized to the rising edge of the convert clock (min 25ns period), with 5-clock-cycle data latency and aperture jitter of 1.2ps rms. Reference selection (INT/EXT pin) and input range control (RSEL pin) are implemented via dedicated digital inputs, allowing runtime reconfiguration without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit quantization with no missing codes guaranteed across –40°C to +85°C |
| Sampling Rate | Up to 40 million samples per second - supports undersampling of RF signals up to 75MHz |
| SNR | 60dBFS at 1MHz input - enables >9.5 effective bits for high-fidelity waveform reconstruction |
| SFDR | 72dBFS at 1MHz (single-ended), 74dBFS at 10MHz (differential) - critical for multi-tone communication analysis |
| Power Dissipation | 190mW typical at 40MSPS with external reference; drops to 20mW in power-down mode |
| Differential Linearity | ±0.5LSB max at 10MHz - ensures monotonicity and linearity in medical image pixel intensity mapping |
| Input Configuration | Programmable single-ended (1.5–3.5V) or differential (2Vp-p) with common-mode output (CM pin) for amplifier biasing |
Pinout & Package
ADS822E/1K is housed in a 28-pin SSOP (DB) package with 0.64mm pitch, optimized for compact PCB layouts and thermal dissipation (θJA = 89°C/W). Pin assignments are validated per TI SBAS069B datasheet Rev. AUGUST 2002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16, 26 | GND | Analog/digital ground return paths - require separate low-impedance planes to minimize noise coupling |
| 2–11 | D9–D0 | 10-bit straight offset binary outputs - MSB (D9) on Pin 2, LSB (D0) on Pin 11, 3-state controlled by OE |
| 12 | OE | Output enable with internal 50kΩ pull-down - HI forces high-impedance state for bus sharing |
| 13 | PD | Power-down control - LO disables conversion and reduces current draw to 4mA (20mW) |
| 14 | CLK | Rising-edge-triggered convert clock - requires <2ns rise/fall time and <1.2ps rms jitter for full SNR performance |
| 15, 27 | +VS | +5V analog supply pins - must be bypassed with 0.1µF + 10µF capacitors per TI layout guidelines |
| 17 | RSEL | Input range select - HI sets 2Vp-p range, LO selects 1Vp-p; internal 50kΩ pull-up defaults to 2Vp-p |
| 18 | INT/EXT | Reference source control - LO enables internal 3.5V/1.5V reference pair; HI disconnects buffers for external REFT/REFB |
| 19, 22 | REFB, REFT | Bottom/top reference terminals - support external references within VS–1.25V to REFB+0.8V bounds |
| 23 | CM | Common-mode voltage output - provides +2.5V bias for driving amplifiers; high-impedance node requiring minimal loading |
| 24, 25 | IN, IN | Differential analog inputs - accept single-ended signals when biased to CM voltage; matched impedances improve SFDR |
| 28 | VDRV | Digital output driver supply - configurable for +3V or +5V logic compatibility; decoupling isolates analog supply noise |
Key Features
| Feature | Design Value |
|---|---|
| Digital error correction logic | Ensures ±0.5LSB DNL and no missing codes at 10MHz - essential for diagnostic-grade medical imaging fidelity |
| Internal/external reference option | Enables multichannel gain/offset matching via shared external reference - improves system-level accuracy in CT/MRI front-ends |
| Single-ended or differential input | Supports both interface topologies without hardware change - simplifies design reuse across test equipment and video digitizers |
| Programmable input range (1Vp-p / 2Vp-p) | Allows dynamic scaling to match sensor output swing - preserves ENOB when digitizing low-amplitude ultrasound echoes |
| Power-down mode (20mW) | Reduces idle power by 90% - extends operational window in portable diagnostic scanners and battery-powered test gear |
Applications
| Medical Imaging | Test Equipment |
|---|---|
Use Scenario: Digitizing X-ray detector outputs and ultrasound echo waveforms in portable imaging systems. IC Role / Device Role / Timing Role: High-speed ADC capturing analog sensor data at 40MSPS with precise timing alignment to beam-scan clocks. Use Value: 60dB SNR and 72dBFS SFDR preserve low-contrast lesion visibility; low 0.5LSB DNL prevents intensity banding in reconstructed images. |
Use Scenario: Signal acquisition in automated test equipment (ATE) performing spectral analysis of RF components. IC Role / Device Role / Timing Role: Front-end digitizer synchronizing with precision clock sources to capture multi-tone distortion products. Use Value: Differential input mode achieves 74dBFS SFDR at 10MHz - enables accurate measurement of third-order intermodulation below –67dBc. |
| Computer Scanners | Video Digitizing |
Use Scenario: Converting high-resolution document scan signals in flatbed and film scanners. IC Role / Device Role / Timing Role: Analog front-end ADC interfacing with CCD/CMOS line sensors and programmable gain amplifiers. Use Value: RSEL pin allows 1Vp-p range selection for low-noise sensor outputs; internal reference eliminates need for external voltage references. |
Use Scenario: Real-time digitization of composite video, S-video, or component analog video streams. IC Role / Device Role / Timing Role: Pixel-rate sampling engine locked to horizontal sync, supporting NTSC/PAL timing constraints. Use Value: 40MSPS rate exceeds 13.5MHz ITU-R BT.601 standard; 5-clock latency enables deterministic pipeline buffering in FPGA-based video processors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit, 40MSPS pipeline ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS823E/1K | 60MSPS max sampling rate; identical SSOP-28 pinout and reference architecture | Better suited for higher-bandwidth communications analyzers requiring >40MHz Nyquist zone | Select when system clock budget allows faster sampling and layout supports tighter timing margins |
| ADS828E/1K | 75MSPS max sampling rate; same pinout but higher power (320mW) and reduced SNR (58dBFS at 1MHz) | Targeted at wideband IF sampling where speed outweighs SNR requirements | Choose for radar/EW systems needing extended undersampling capability beyond 75MHz input |
Compared with ADS822E/1K, ADS823E/1K offers +20MSPS headroom with unchanged power and pin compatibility, while ADS828E/1K trades 2dB SNR for +35MSPS - making ADS822E/1K optimal for SNR-critical medical and test applications where 40MSPS suffices.
Availability
ADS822E/1K is available at Aetrix Electronics and suitable for medical imaging systems, automated test equipment, computer scanner subsystems, and video digitizing platforms requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for ADS822E/1K includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in high-performance data converters and signal chain solutions.
The ADS822E/1K belongs to TI's high-speed pipeline ADC product line, designed specifically for demanding applications in medical diagnostics, instrumentation, and digital video where resolution, speed, and spectral purity must coexist under single-supply constraints.
FAQ
What is the maximum sampling rate supported by the ADS822E/1K?
The ADS822E/1K supports a maximum sampling rate of 40 million samples per second (40MSPS), as specified in the TI SBAS069B datasheet. This rate is achievable across the full temperature range (–40°C to +85°C) with external reference and proper clock conditioning. At this rate, the device maintains 60dB SNR and 72dBFS SFDR at 1MHz input frequency, making it suitable for high-fidelity acquisition in medical and test systems.
Does the ADS822E/1K support differential analog inputs?
Yes, the ADS822E/1K supports fully differential analog inputs via Pins 24 (IN) and 25 (IN), with a specified 2Vp-p differential input range. When used differentially, the device achieves improved spurious-free dynamic range - up to 74dBFS at 10MHz - due to common-mode noise rejection and matched internal capacitance. The CM pin (Pin 23) provides a +2.5V common-mode bias reference for external amplifier interfacing.
How does the internal reference work on the ADS822E/1K?
The ADS822E/1K integrates a precision bandgap-based internal reference generating +3.5V (REFT) and +1.5V (REFB) outputs, establishing a 2Vp-p full-scale range. The INT/EXT pin (Pin 18) controls selection: LO enables the internal reference and connects REFT/REFB to the ADC core; HI disables internal buffers, allowing external reference voltages within defined bounds (REFB: 1.25V–2.7V, REFT: 2.3V–3.75V).
What is the power consumption of the ADS822E/1K in normal operation?
In normal operation with external reference and VDRV = +5V, the ADS822E/1K consumes 190mW typical (40mA at +5V), as confirmed in the SBAS069B electrical characteristics table. Power drops to 20mW (4mA) in power-down mode (PD = HI). Internal reference operation increases dissipation to 250mW due to reference buffer activation - a key trade-off for systems prioritizing simplicity over ultra-low power.
Is the ADS822E/1K pin-compatible with other devices in the ADS82x family?
Yes, the ADS822E/1K is pin-for-pin compatible with the ADS823E/1K (60MSPS), ADS826E/1K (60MSPS), and ADS828E/1K (75MSPS), all in SSOP-28 (DB) packages. This allows direct hardware upgrades to higher sampling rates without PCB redesign. However, note that ADS825E/1K adds +3V logic I/O compatibility - a feature not present in ADS822E/1K.
ADS822E/1K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 40M
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS822E/1K FAQ
1.How can I place an order for ADS822E/1K through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS822E/1K on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADS822E/1K reliable?
The price and inventory of ADS822E/1K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS822E/1K is usually 5 days.
3.What payment methods are accepted for ADS822E/1K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS822E/1K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS822E/1K?
ADS822E/1K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS822E/1K order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADS822E/1K?
For technical support, including ADS822E/1K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS822E/1K requirements.
6.How does Aetrix verify that ADS822E/1K is sourced from the original manufacturer or authorized distributors?
All ADS822E/1K products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADS822E/1K meets industry standards.
7.What is the process for return or replacement of ADS822E/1K?
All ADS822E/1K units undergo pre-shipment inspection (PSI). If there is an issue with ADS822E/1K, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADS822E/1K part is unused and in its original packaging.
Return procedure for ADS822E/1K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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