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Texas Instruments ADS850Y/250
- Part No.:
- ADS850Y/250
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-TQFP
- Datasheet:
-
ADS850Y/250.pdf
- Description:
- IC ADC 14BIT PIPELINED 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,504
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Product details
Overview
ADS850Y/250 from Texas Instruments is a 14-bit, 10MSPS self-calibrating pipelined analog-to-digital converter with differential or single-ended inputs, 85dB spurious-free dynamic range at Nyquist, 76dB signal-to-noise ratio, and internal/external reference support-designed for high-fidelity IF/baseband digitization in communications and imaging systems.
For engineers reviewing the ADS850Y/250 datasheet, ADS850Y/250 pinout, ADS850Y/250 application, or ADS850Y/250 equivalent, this page delivers verified technical context, calibrated performance metrics across 2Vp-p and 4Vp-p input ranges, TQFP-48 package layout, over-range detection behavior, and validated alternative ADCs for imaging, test instrumentation, and IR scanner designs.
Technical Context
The ADS850Y/250 implements a fully differential track-and-hold front-end paired with digital error correction logic to ensure 14-bit linearity and eliminate capacitor/gain mismatches via on-chip calibration. Its pipelined architecture delivers 10MSPS throughput with 7-clock-cycle data latency and supports both internal (1V or 2V) and external reference configurations.
It features +3V/+5V logic I/O compatibility via separate VDRV supply, programmable input range selection (2Vp-p to 4Vp-p), and an over-range indicator (OVR) synchronized to pipeline output timing. The device operates across –40°C to +85°C with analog input bandwidth of 270MHz and aperture jitter of 4ps rms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit-guarantees monotonicity and no missing codes across full temperature range. |
| Sample Rate | 10MSPS-enables real-time digitization of IF signals up to 4.8MHz with full SFDR/SNR performance. |
| SFDR | 85dBFS at 4.8MHz (–1dB input, 2Vp-p differential)-ensures clean spectral purity for communication channel analysis. |
| SNR | 76dBFS at 4.8MHz (–1dB input, 4Vp-p differential)-provides 12.2 effective bits for high-fidelity imaging pixel data capture. |
| Input Range Flexibility | Programmable 2Vp-p (best SFDR) or 4Vp-p (lowest input-referred noise)-supports trade-off between spurious suppression and noise floor in CCD/IR applications. |
| Power Dissipation | 250mW with internal reference at VDRV = 3V-enables thermal management in dense mixed-signal PCB layouts. |
| Analog Input Bandwidth | 270MHz (–3dBFS)-allows undersampling of RF/IF signals without external anti-alias filtering in SDR front-ends. |
Pinout & Package
TQFP-48 package with exposed thermal pad (PFB designation); 7mm × 7mm body, 0.5mm pitch; requires dedicated analog/digital ground tie at package and system level per TI SBAS154C layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN / IN | Differential Analog Input Pair | Accepts ±1.5V to ±2.0V swing (2Vp-p mode) or ±2.5V to ±3.5V (4Vp-p mode); common-mode voltage fixed at 2.5V unless externally biased. |
| CLK | Convert Clock Input | Rising-edge triggered; 100ns period (10MHz), 48ns min high/low time; jitter ≤4ps rms critical for SNR preservation. |
| OVR | Over-Range Indicator Output | Active-HIGH flag synchronized to pipeline output; indicates input exceeding REFT/REFB bounds-used for real-time clipping detection in test equipment. |
| VREF / SEL / REFT / REFB | Reference Configuration Interface | VREF selects internal 1V/2V reference; SEL ties to GND/+VS to enable 4Vp-p/internal-disable; REFT/REFB provide buffered top/bottom reference voltages for external biasing. |
| OE / PD / CAL / CAL_BUSY | Digital Control & Status | OE enables 3-state outputs; PD enters 20mW power-down; CAL initiates 3.28ms self-calibration; CAL_BUSY asserts during calibration and forces outputs to zero. |
| B1–B14 | Parallel Digital Output Bus | 14-bit straight offset binary; MSB (B1) to LSB (B14); driven by VDRV-supplied CMOS buffers-supports 3V or 5V logic interfacing independent of analog supply. |
Key Features
| Feature | Design Value |
|---|---|
| Self-Calibration | On-demand or power-on calibration corrects gain/offset errors and capacitor mismatches-eliminates need for external calibration circuitry in field-deployed instrumentation. |
| Differential Input Architecture | Rejects even-order harmonics and common-mode noise-improves SFDR by ≥3dB vs. single-ended drive in CCD scanner front-ends. |
| Flexible Reference Options | Internal 1V/2V bandgap or external reference via VREF pin-enables optimization for either low-noise (4Vp-p) or low-distortion (2Vp-p) operation without hardware change. |
| Over-Range Detection | Dedicated OVR pin with pipeline-aligned timing-allows real-time signal integrity monitoring in IR imaging arrays without additional logic gates or FPGA resources. |
| +3V/+5V Logic Compatibility | VDRV pin supplies digital output drivers independently-permits direct interface to 3.3V FPGAs or microcontrollers while maintaining +5V analog supply integrity. |
Applications
| IF and Baseband Digitization | CCD Imaging Scanners |
|---|---|
Use Scenario: Digitizing intermediate frequency signals in software-defined radio receivers operating at 4.8MHz with –1dBFS input. IC Role / Device Role / Timing Role: High-speed ADC capturing baseband I/Q data with minimal harmonic distortion and clock-jitter-induced noise. Use Value: 85dB SFDR ensures adjacent-channel interference remains below detection threshold in multi-carrier LTE/FDD systems. |
Use Scenario: Converting analog pixel outputs from linear CCD sensors in industrial inspection systems requiring 12+ ENOB fidelity. IC Role / Device Role / Timing Role: Precision digitizer sampling at 10MSPS with programmable 4Vp-p input range to maximize dynamic range for low-light pixel signals. Use Value: 76dB SNR and 270MHz analog bandwidth preserve fine spatial detail and contrast in high-resolution X-ray or document scanners. |
| Test Instrumentation | IR Imaging |
Use Scenario: Embedded digitizer in automated test equipment measuring amplifier THD+N across 1–5MHz bandwidth. IC Role / Device Role / Timing Role: Calibration-stable ADC providing repeatable SINAD measurements under varying temperature conditions (–40°C to +85°C). Use Value: ±5ppm/°C gain drift and self-calibration maintain <±0.7%FS gain error-reducing recalibration frequency in production test racks. |
Use Scenario: Front-end ADC in uncooled microbolometer IR camera modules digitizing thermal scene data at video frame rates. IC Role / Device Role / Timing Role: Low-power (250mW) 14-bit converter supporting 2Vp-p mode for optimal SFDR in noisy automotive or industrial environments. Use Value: Over-range indicator (OVR) flags saturated pixels in real time-enabling adaptive exposure control without host processor intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, high-resolution ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS851Y/250 | 16-bit resolution, 5MSPS max, identical TQFP-48 package and pinout; higher DC accuracy but lower speed and SFDR (79dB at 2.4MHz). | Better suited for precision DC-coupled applications like automated test fixtures where resolution > speed; not recommended for Nyquist-rate IF sampling. | Select ADS851Y/250 only when ENOB >13.5 is required and 5MSPS suffices-avoid for real-time 10MSPS CCD line scanning. |
| AD9240ASTZ | 14-bit, 10MSPS, but uses external reference only; no internal calibration; SNR = 72dB, SFDR = 80dB at 5MHz; LQFP-48 package with different pin assignment. | Requires external calibration circuitry and reference design; better for cost-sensitive, non-critical imaging where board space allows discrete reference components. | Choose AD9240ASTZ only if BOM cost reduction outweighs engineering effort for calibration and reference stability-no drop-in replacement. |
Compared with ADS850Y/250, ADS851Y/250 trades speed for resolution and eliminates calibration overhead, while AD9240ASTZ sacrifices on-chip intelligence and package compatibility for legacy design reuse-making ADS850Y/250 the optimal balance of self-contained performance, flexibility, and thermal efficiency in new high-fidelity digitizer designs.
Availability
ADS850Y/250 is available at Aetrix Electronics and suitable for IF/baseband digitization, CCD imaging scanners, and test instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial OEM programs.
Supply support for ADS850Y/250 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 precision data converters and signal chain solutions.
The ADS850 product line was engineered for high-dynamic-range digitization in demanding communications, scientific imaging, and automated test environments-emphasizing self-calibration, flexible reference architecture, and robust noise immunity.
FAQ
What is the maximum sampling rate supported by the ADS850Y/250?
The ADS850Y/250 supports a maximum sampling rate of 10MSPS, confirmed in the Electrical Characteristics table of TI SBAS154C. At this rate, it maintains full 14-bit linearity, 85dB SFDR, and 76dB SNR with proper clock jitter control (<4ps rms). Performance degrades above 10MSPS due to pipeline timing constraints and aperture jitter effects.
Does the ADS850Y/250 require external calibration components?
No, the ADS850Y/250 performs full self-calibration internally-correcting capacitor mismatches and gain errors without external components. A single CAL pulse initiates a 3.28ms procedure; power-on calibration occurs automatically. This eliminates trim pots, DACs, or calibration firmware dependencies in ADS850Y/250-based systems.
How does the over-range indicator (OVR) function in the ADS850Y/250?
The OVR pin on the ADS850Y/250 asserts HIGH when the analog input exceeds either REFT (top reference) or REFB (bottom reference), indicating saturation. It updates synchronously with the 7-cycle pipeline output-so OVR status corresponds precisely to the same sample as the associated 14-bit data word, enabling deterministic clipping detection in real-time imaging pipelines.
Can the ADS850Y/250 operate with a 3.3V digital interface while using a 5V analog supply?
Yes, the ADS850Y/250 supports mixed-voltage operation via the VDRV pin: supplying 3.3V to VDRV configures all digital outputs (B1–B14, OVR, CAL_BUSY) for 3.3V CMOS logic levels, while +VS remains at +5V for analog circuitry. This decoupling prevents digital switching noise from coupling into the analog signal path in ADS850Y/250 designs.
What input configurations does the ADS850Y/250 support?
The ADS850Y/250 supports three verified input modes: (1) Differential with 2Vp-p or 4Vp-p span, (2) Single-ended with ac-coupled level shift (using CM pin and REFT/REFB), and (3) DC-coupled single-ended with external op-amp biasing. All modes are explicitly characterized in TI SBAS154C Figures 1–3 and Table I-no unsupported configurations are validated for ADS850Y/250.
ADS850Y/250 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-TQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 10M
- 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:
- 48-TQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS850Y/250 FAQ
1.How can I place an order for ADS850Y/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS850Y/250 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 ADS850Y/250 reliable?
The price and inventory of ADS850Y/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS850Y/250 is usually 5 days.
3.What payment methods are accepted for ADS850Y/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS850Y/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS850Y/250?
ADS850Y/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS850Y/250 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 ADS850Y/250?
For technical support, including ADS850Y/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS850Y/250 requirements.
6.How does Aetrix verify that ADS850Y/250 is sourced from the original manufacturer or authorized distributors?
All ADS850Y/250 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 ADS850Y/250 meets industry standards.
7.What is the process for return or replacement of ADS850Y/250?
All ADS850Y/250 units undergo pre-shipment inspection (PSI). If there is an issue with ADS850Y/250, 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 ADS850Y/250 part is unused and in its original packaging.
Return procedure for ADS850Y/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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