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STMicroelectronics TSA1204IFT
- Part No.:
- TSA1204IFT
- Manufacturer:
- STMicroelectronics
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-TQFP
- Datasheet:
-
TSA1204IFT.pdf
- Description:
- IC ADC 12BIT PIPELINED 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,085
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Product details
Overview
TSA1204 from STMicroelectronics is a dual-channel, 12-bit, 20 Msps pipeline analog-to-digital converter with simultaneous sampling, 1 GHz analog input bandwidth, ENOB = 11.2 bits at Nyquist, and SFDR = –81.5 dBc - designed for I/Q signal digitization in RF receiver front-ends of 3G base stations and ultrasound imaging systems.
For engineers reviewing the TSA1204 datasheet, TSA1204 pinout, TSA1204 application, or TSA1204 equivalent, this page delivers verified specifications, validated pin functions, real-world use scenarios, and confirmed alternative options - all grounded in ST's official December 2006 Rev 4 datasheet and application notes.
Technical Context
The TSA1204 employs a 12-stage pipeline architecture with digital error correction to achieve 11.2 effective bits at 20 Msps and <±0.93 LSB DNL. It features dual independent track-and-hold circuits synchronized to a common clock, enabling true simultaneous sampling on I and Q channels with 7-cycle (I) and 7.5-cycle (Q) pipeline latency.
It supports differential analog inputs only, requires external VREFM connection, and offers flexible reference configuration - internal bandgap (VREFPI/VREFPQ ≈ 0.89 V), external reference, or mixed-mode biasing - with dedicated INCM pins per channel to maintain optimal common-mode voltage alignment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for high-fidelity signal capture in medical and telecom applications. |
| Sampling Rate | 0.5–20 Msps - adaptive clocking enables power scaling from 95 mW @ 10 Msps to 120 mW @ 20 Msps. |
| ENOB | 11.2 bits @ Nyquist - reflects actual usable resolution after noise and distortion; exceeds 10.6 bits minimum across full temperature range. |
| SFDR | –81.5 dBc @ Nyquist - ensures clean spectral separation for adjacent-channel rejection in I/Q demodulation. |
| Analog Bandwidth | 1 GHz - supports wideband RF input signals up to ~400 MHz without significant amplitude roll-off. |
| Input Interface | Differential-only - mandates balanced driving (e.g., transformer or differential amplifier) to meet specified linearity and crosstalk (XTLK = 87 dB). |
| Power Supply | AVCC = DVCC = VCCBI = 2.5 V ±0.25 V; VCCBE = 1.8–3.5 V - separate analog/digital/buffer rails minimize supply coupling and enable 2.5 V/3.3 V CMOS output compatibility. |
Pinout & Package
Package: 48-pin TQFP (7 × 7 mm, 0.5 mm pitch), industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INI / INBI | I-channel differential analog input | Must be driven differentially; full-scale swing = 2×(VREFP–VREFM); common-mode voltage set by INCM. |
| INQ / INBQ | Q-channel differential analog input | Independent but synchronous with I-channel; matched gain/offset (GM ≤ 0.1%, OM ≤ 2.5 LSB) enables precise quadrature processing. |
| CLK / CLKD | Master sampling clock input | CMOS-compatible 2.5 V input; rising edge triggers simultaneous sampling on both channels; duty cycle 45–55% required. |
| SELECT | Channel multiplex control | High = I-channel data on D0–D11; low = Q-channel data; tied to CLK enables interleaved I/Q output on rising/falling edges. |
| OEB | Output enable control | Low = active outputs (tri-state disabled); high = tri-state (all D0–D11 high-Z); allows bus sharing in multi-ADC systems. |
| D0(LSB)–D11(MSB) | Multiplexed CMOS digital output bus | 12-bit parallel output; voltage level configurable via VCCBE (2.5 V or 3.3 V); supports 10 pF load with 9 ns data valid delay (Tod). |
| REFPI / REFMI | I-channel reference top/bottom | VREFPI ≈ 0.89 V (internal); VREFMI = 0 V; external VREFM mandatory; sets full-scale range and defines INCM = (VREFPI–VREFMI)/2. |
| AGND / DGND / GNDBE / GNDBI | Separate ground returns | AGND (analog), DGND (digital), GNDBE/GNDBI (buffer supplies) must be isolated and joined at single point to reduce noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual simultaneous sampling | Guarantees phase-matched I/Q acquisition (PHM ≤ 1°) critical for zero-IF receivers and Doppler ultrasound beamforming. |
| Internal reference with external bias capability | Reduces BOM count by integrating bandgap references while allowing precision external references for enhanced linearity or tempco performance. |
| Multiplexed 12-bit CMOS output bus | Shares D0–D11 between I/Q channels using SELECT or CLK-synchronized interleaving - cuts pin count vs. dual independent buses. |
| Adaptive power consumption | Draws only 95 mW at 10 Msps - enables thermal-aware design in portable or dense RF modules without sacrificing SNR (66.9 dB typical). |
| 7-cycle pipeline latency (I) / 7.5-cycle (Q) | Predictable, fixed delay simplifies timing closure in FPGA-based digital downconverters and real-time signal processing pipelines. |
Applications
| Medical Ultrasound Imaging | 3G Base Station Receiver |
|---|---|
|
Use Scenario: Digitizing echo return signals from phased-array transducers operating at 2–15 MHz carrier frequencies with >100 dB dynamic range requirements. IC Role / Device Role / Timing Role: Dual-channel ADC capturing I/Q baseband outputs from quadrature demodulators; simultaneous sampling preserves phase coherence for beam steering and Doppler shift analysis. Use Value: 87 dB crosstalk rejection and 11.2-bit ENOB ensure accurate tissue differentiation and velocity mapping without channel interference or quantization-induced artifacts. |
Use Scenario: Downconverting and digitizing WCDMA UMTS signals in Node-B receiver chains, where adjacent-channel leakage ratio (ACLR) and error vector magnitude (EVM) are critical. IC Role / Device Role / Timing Role: Front-end ADC for direct-conversion receiver; converts complex IF signals into 12-bit I/Q streams synchronized to baseband processor clocks. Use Value: –81.5 dBc SFDR suppresses harmonics and intermodulation products that would otherwise degrade ACLR compliance in multi-carrier operation. |
| I/Q Signal Processing | High-Speed Data Acquisition |
|
Use Scenario: Real-time spectrum monitoring and signal intelligence (SIGINT) systems requiring phase-coherent digitization of unknown RF signals across 100+ MHz instantaneous bandwidth. IC Role / Device Role / Timing Role: Core digitizer in software-defined radio (SDR) front-end; provides time-aligned I/Q samples for FFT-based spectral analysis and modulation classification. Use Value: 1 GHz analog bandwidth and 20 Msps sampling support >400 MHz RF input without aliasing, while matched channel characteristics prevent IQ imbalance errors. |
Use Scenario: Portable oscilloscope or automated test equipment capturing transient waveforms (e.g., power electronics switching, sensor bursts) with sub-50 ns timing resolution. IC Role / Device Role / Timing Role: High-fidelity digitizer for time-domain waveform reconstruction; uses internal reference and low-latency pipeline for deterministic trigger-to-data timing. Use Value: <±0.93 LSB DNL and monotonicity guarantee no missing codes - essential for accurate peak detection and pulse width measurement in production test. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 12-bit, high-SFDR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9233BCPZ-20 | Single-channel, 12-bit, 20 Msps; SFDR = –82 dBc @ 70 MHz; no integrated reference; requires external REF. | Lacks simultaneous dual-channel sampling and I/Q multiplexing - needs two devices and external clock synchronization for I/Q. | Choose when board space permits dual ICs and higher SFDR at IF frequencies is prioritized over integration and power efficiency. |
| ADS5272IPFP | Dual-channel, 12-bit, 40 Msps; ENOB = 10.7 bits @ 20 MHz; consumes 360 mW; LVDS outputs only. | Higher speed but lower ENOB and significantly higher power; LVDS interface increases layout complexity vs. CMOS bus. | Choose only if >20 Msps sampling is mandatory and system can accommodate higher thermal load and differential signaling. |
Compared with AD9233BCPZ-20 and ADS5272IPFP, the TSA1204 uniquely combines dual-channel simultaneity, integrated reference, CMOS multiplexed outputs, and 120 mW power at 20 Msps - making it optimal for compact, low-power I/Q digitization where channel matching and ease of interface are critical.
Availability
TSA1204 is available at Aetrix Electronics and suitable for 3G base station receiver design, medical ultrasound front-ends, portable instrumentation, and I/Q signal processing systems requiring stable component supply and long-term lifecycle support.
Supply support for TSA1204 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in analog, power, microcontrollers, and sensors for industrial, automotive, and communications markets.
The TSA1204 belongs to ST's high-speed data converter product line, engineered specifically for RF and communications applications demanding low-noise, high-SFDR, and dual-channel phase coherence in compact form factors.
FAQ
Is the TSA1204 still in production?
No - STMicroelectronics has marked the TSA1204 as obsolete per its official documentation. However, Aetrix Electronics maintains legacy inventory with full traceability and offers extended lifecycle support, including obsolescence mitigation planning and cross-reference guidance for drop-in or redesign alternatives.
Can the TSA1204 operate with a single-ended analog input?
No - the TSA1204 requires strictly differential analog inputs (e.g., INI/INBI and INQ/INBQ). Attempting single-ended drive degrades ENOB, increases THD, and violates the device's static linearity specifications; a transformer or fully differential amplifier is mandatory for proper operation.
What is the purpose of the IPOL pin?
The IPOL pin sets the analog input bias current polarity for optimizing linearity under varying common-mode conditions. It connects to an external resistor network (per Figure 23 in the datasheet) to adjust internal current sources - critical when using external references or operating near AVCC limits.
How does the SELECT pin interact with CLK for interleaved output mode?
When SELECT is hard-wired to CLK, the TSA1204 delivers I-channel data on D0–D11 at each rising clock edge and Q-channel data at each falling edge - achieving true time-interleaved I/Q output without external logic. This mode eliminates SELECT control overhead and reduces FPGA resource usage in SDR implementations.
TSA1204IFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 48-TQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 20M
- Number of Inputs:
- 2
- Input Type:
- Differential
- 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:
- 2.25V ~ 2.7V
- Voltage - Supply, Digital:
- 2.25V ~ 2.7V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-TQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
TSA1204IFT FAQ
1.How can I place an order for TSA1204IFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSA1204IFT 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 TSA1204IFT reliable?
The price and inventory of TSA1204IFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSA1204IFT is usually 5 days.
3.What payment methods are accepted for TSA1204IFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSA1204IFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSA1204IFT?
TSA1204IFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSA1204IFT 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 TSA1204IFT?
For technical support, including TSA1204IFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSA1204IFT requirements.
6.How does Aetrix verify that TSA1204IFT is sourced from the original manufacturer or authorized distributors?
All TSA1204IFT 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 TSA1204IFT meets industry standards.
7.What is the process for return or replacement of TSA1204IFT?
All TSA1204IFT units undergo pre-shipment inspection (PSI). If there is an issue with TSA1204IFT, 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 TSA1204IFT part is unused and in its original packaging.
Return procedure for TSA1204IFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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