TSA1203IF - Dual 12-bit 40MSPS ADC | STMicroelectronics
N.º de pieza: TSA1203IF ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $14.85 | $14,85 |
| 10 | $13.42 | $134,20 |
| 100 | $11.78 | $1.178,00 |
| 500 | $10.36 | $5.180,00 |
| 1.000 | $9.12 | $9.120,00 |
| 2.500 | $8.2 | $20.500,00 |
TSA1203IF Descripción general
An analog-to-digital converter (ADC) is a mixed-signal integrated circuit that converts a continuous-time, continuous-amplitude analog input into a discrete-time, discrete-amplitude digital code. Pipeline ADCs such as the TSA1203IF use a multi-stage switched-capacitor architecture to achieve high sampling rates while keeping per-stage power and die area modest, sitting within the broader hierarchy of data converters -> ADC -> high-speed pipeline ADC -> semiconductor. Dual-channel variants like this one are favored for diversity receivers, I/Q baseband sampling, and simultaneous multi-antenna digital beamforming because the two channels are sampled on a common clock edge, eliminating channel-to-channel skew.
Key features include 1 GHz analog input bandwidth, SFDR of -68.3 dBc at 10 MHz input, multiplexed outputs for reduced pin count, common clocking between channels, and pin-to-pin compatibility with the dual 10-bit 20/40 MSPS TSA1005-20/40 and the dual 12-bit 20 MSPS TSA1204. The pipelined architecture combined with digital error correction yields clean 12-bit outputs at full clock rate without requiring complex external calibration at room temperature.
Typical applications include cellular base station receivers, IF sampling for software-defined radio, medical imaging front-ends, and industrial ultrasound beamformers. The integrated reference and dual independent input channels also suit multi-channel data-acquisition cards for test and measurement instrumentation. When designing with this part, ensure the analog and digital grounds are joined only at a single point near the exposed pad, and that the analog supply is decoupled with both 0.1 µF ceramic and 10 µF bulk capacitance within 5 mm of the supply pins.
Alternativas directas para TSA1203IF — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
TSA1203IFT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TSA1204
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TSA1005-40
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TSA1005-20
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TSA1203IF-E
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TSA1203IF Valores máximos y características eléctricas
| Manufacturer | STMicroelectronics |
| Part Number | TSA1203IF |
| Resolución | 12 bit |
| Number of Channels | 2 (dual, simultaneous sampling) |
| Frecuencia de muestreo | 40 MSPS (max) |
| Architecture | Pipelined, with digital error correction |
| Analog Input Bandwidth | 1 GHz |
| Supply Voltage (Analog) | 2.5 V single supply |
| Supply Voltage (Digital Output) | 2.5 V or 3.3 V (independent) |
| Power Consumption | 230 mW at 40 Msps |
| SFDR | -68.3 dBc at Fin = 10 MHz |
| Output Interface | CMOS, multiplexed between channels |
| Tensión de referencia | Built-in (internal) |
| Track-and-Hold | Dual simultaneous sample-and-hold inputs |
| Encapsulado | 48-pin TQFP (7x7 mm) |
| Rango de temperatura de funcionamiento | -40 °C to +85 °C (industrial) |
| Process Technology | 0.25 µm CMOS |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
Configuración de pines de TSA1203IF
| Pin 1 | AIN1A — Analog input channel 1, positive |
| Pin 2 | AIN1B — Analog input channel 1, negative (complementary) |
| Pin 3 | VREF — Internal reference voltage decoupling |
| Pin 4 | AGND — Analog ground |
| Pin 5 | AVDD — Analog supply, 2.5 V |
| Pin 6 | AGND — Analog ground |
| Pin 7 | CLK — Common clock input for both channels |
| Pin 8 | CLKB — Complementary clock input |
| Pin 9 | AGND — Analog ground |
| Pin 10 | AVDD — Analog supply, 2.5 V |
| Pin 11 | AGND — Analog ground |
| Pin 12 | AIN2A — Analog input channel 2, positive |
| Pin 13 | AIN2B — Analog input channel 2, negative (complementary) |
| Pin 14 | AGND — Analog ground |
| Pin 15 | AVDD — Analog supply, 2.5 V |
| Pin 16 | AVDD — Analog supply, 2.5 V |
| Pin 17 | AGND — Analog ground |
| Pin 18 | AVDD — Analog supply, 2.5 V |
| Pin 19 | AGND — Analog ground |
| Pin 20 | AVDD — Analog supply, 2.5 V |
| Pin 21 | DVDD — Digital output supply, 2.5 V or 3.3 V |
| Pin 22 | DGND — Digital ground |
| Pin 23 | D11A — Channel 1 output bit 11 (MSB) when MUX selects ch1 |
| Pin 24 | D10A — Channel 1 output bit 10 when MUX selects ch1 |
| Pin 25 | D9A — Channel 1 output bit 9 when MUX selects ch1 |
| Pin 26 | D8A — Channel 1 output bit 8 when MUX selects ch1 |
| Pin 27 | D7A — Channel 1 output bit 7 when MUX selects ch1 |
| Pin 28 | D6A — Channel 1 output bit 6 when MUX selects ch1 |
| Pin 29 | D5A — Channel 1 output bit 5 when MUX selects ch1 |
| Pin 30 | D4A — Channel 1 output bit 4 when MUX selects ch1 |
| Pin 31 | D3A — Channel 1 output bit 3 when MUX selects ch1 |
| Pin 32 | D2A — Channel 1 output bit 2 when MUX selects ch1 |
| Pin 33 | D1A — Channel 1 output bit 1 when MUX selects ch1 |
| Pin 34 | D0A — Channel 1 output bit 0 (LSB) when MUX selects ch1 |
| Pin 35 | D11B — Channel 2 output bit 11 (MSB) when MUX selects ch2 |
| Pin 36 | D10B — Channel 2 output bit 10 when MUX selects ch2 |
| Pin 37 | D9B — Channel 2 output bit 9 when MUX selects ch2 |
| Pin 38 | D8B — Channel 2 output bit 8 when MUX selects ch2 |
| Pin 39 | D7B — Channel 2 output bit 7 when MUX selects ch2 |
| Pin 40 | D6B — Channel 2 output bit 6 when MUX selects ch2 |
| Pin 41 | D5B — Channel 2 output bit 5 when MUX selects ch2 |
| Pin 42 | D4B — Channel 2 output bit 4 when MUX selects ch2 |
| Pin 43 | D3B — Channel 2 output bit 3 when MUX selects ch2 |
| Pin 44 | D2B — Channel 2 output bit 2 when MUX selects ch2 |
| Pin 45 | D1B — Channel 2 output bit 1 when MUX selects ch2 |
| Pin 46 | D0B — Channel 2 output bit 0 (LSB) when MUX selects ch2 |
| Pin 47 | MUX — Channel select for multiplexed output bus |
| Pin 48 | EP — Exposed thermal pad - tie to AGND for heat dissipation |
Aplicaciones típicas
TSA1203IF es adecuado para 6 aplicacións: Cellular Base Station I/Q Baseband Sampling, IF Sampling for Software-Defined Radio, Medical Ultrasound Beamforming Front-End, Industrial Multi-Channel Data Acquisition, Communications Test and Measurement, Radar and Lidar Signal Processing.
Cellular Base Station I/Q Baseband Sampling
The TSA1203IF's dual simultaneous sample-and-hold inputs and common clocking make it well matched to I/Q baseband sampling in cellular base station receivers. With 12-bit resolution and 40 MSPS per channel, the ADC cleanly captures multi-carrier GSM, EDGE and WCDMA signals at baseband without inter-channel skew. The independent 2.5 V or 3.3 V digital output supply interfaces directly to FPGA baseband logic, eliminating level shifters in the signal chain. Spurious-free dynamic range of -68.3 dBc at 10 MHz input keeps harmonic spurs well below the fundamental, supporting tight EVM budgets required by 3GPP.
Recomendado
IF Sampling for Software-Defined Radio
The TSA1203IF's 1 GHz analog input bandwidth enables direct IF sampling of intermediate-frequency signals in software-defined radio (SDR) architectures, removing one or more analog mixer stages from the receive chain. Sampling at 40 MSPS gives sufficient Nyquist headroom for signals at 15-20 MHz IF while keeping the digital data rate manageable for downstream FPGA or DSP processing. The 230 mW power dissipation at full sample rate is low for the speed class, simplifying thermal design in portable and manpack SDR form factors. The built-in internal reference removes a noisy external reference from the BOM.
Recomendado
Medical Ultrasound Beamforming Front-End
Dual-channel simultaneous sampling at 40 MSPS makes the TSA1203IF well suited to multi-channel ultrasound receiver arrays, where channel-to-channel timing skew must be held below a few hundred picoseconds for accurate beamforming. Each channel can digitize the output of an LNA plus TGC stage without time-alignment errors, preserving phase coherence across the 32-, 64- or 128-element probe. The 12-bit dynamic range supports typical ultrasound penetration at 5-10 MHz center frequency. Low 230 mW per dual channel keeps total power manageable for portable cart-based ultrasound systems.
Recomendado
Industrial Multi-Channel Data Acquisition
In industrial data-acquisition cards and modular instrumentation, the TSA1203IF packs two simultaneous 12-bit, 40 MSPS converters into a single TQFP-48 footprint, doubling channel density on the PCB. Multiplexed outputs reduce digital pin count and free board space for additional channels, isolation barriers, or trigger logic. The -40 to +85 °C industrial operating range covers most factory-floor and outdoor enclosure environments. The CMOS output stage can be powered from 3.3 V to interface directly to modern FPGA-based acquisition controllers.
Recomendado
Communications Test and Measurement
Vector signal analyzers, arbitrary waveform digitizers, and cable modem test equipment benefit from the TSA1203IF's 1 GHz analog bandwidth and -68.3 dBc SFDR. The dual-channel capability allows simultaneous capture of I and Q, or of two DUT outputs for differential measurements, in a single device. Independent AVDD/DVDD rails simplify board layout by separating analog and digital return currents. The internal reference reduces calibration drift compared with an external reference IC.
Recomendado
Radar and Lidar Signal Processing
Short-range automotive radar and industrial lidar pre-processors benefit from the TSA1203IF's 1 GHz analog bandwidth, which lets the ADC sample wideband IF signals directly without an analog downconversion stage. Dual-channel sampling captures matched I/Q pairs from a single mixer, simplifying DSP demodulation downstream. With 12-bit resolution, range and velocity resolution are sufficient for parking-assist and perimeter-security radar systems. The TQFP-48 footprint is footprint-compatible with the TSA1204 (20 MSPS) and TSA1005-40 (10-bit) family, easing platform scalability.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para TSA1203IF — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | TSA1203IFT | TSA1204 | TSA1005-40 | TSA1005-20 | TSA1203IF-E |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | TQFP-48 (7x7 mm) | TQFP-48 (7x7 mm) - same | TQFP-48 (7x7 mm) - same | TQFP-48 (7x7 mm) - same | TQFP-48 (7x7 mm) - same | TQFP-48 (7x7 mm) - same |
| Resolution | 12 bit | 12 bit | 12 bit | 10 bit | 10 bit | 12 bit |
| Number of Channels | 2 (dual, simultaneous) | 2 (dual, simultaneous) | 2 (dual, simultaneous) | 2 (dual, simultaneous) | 2 (dual, simultaneous) | 2 (dual, simultaneous) |
| Max Sampling Rate | 40 MSPS | 40 MSPS | 20 MSPS | 40 MSPS | 20 MSPS | 40 MSPS |
| Supply Voltage (Analog) | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
| Pin-to-Pin Compatible | Reference (TQFP-48) | Yes (identical silicon, different packaging) | Yes (lower speed, same pinout) | Yes (lower resolution, same pinout) | Yes (lower resolution and speed, same pinout) | Yes (extended/screened variant, same pinout) |
Diferenciadores clave
- Pin-to-pin compatible across four STMicroelectronics family members for design scalability (frente a TSA1204, TSA1005-40, TSA1005-20)
- Dual simultaneous sample-and-hold with 1 GHz analog bandwidth enables direct IF sampling (frente a Generic single-channel 12-bit 40 MSPS ADCs)
- Independent 2.5 V or 3.3 V CMOS output supply simplifies FPGA interfacing (frente a ADCs with single fixed output supply)
Notas de diseño
The TSA1203IF requires a clean 2.5 V analog supply (AVDD) and an independent 2.5 V or 3.3 V digital output supply (DVDD). Place a 0.1 µF ceramic decoupling capacitor within 5 mm of each AVDD pin and add a 10 µF bulk tantalum or ceramic capacitor at the supply entry point. Tie analog and digital grounds at a single point near the exposed pad to avoid ground-loop noise coupling into the analog front-end. Per ST datasheet CD00002389, separate AVDD/DVDD regulation prevents digital switching noise from corrupting the analog sampling path.
Estimated: with theta_JA of approximately 50 C/W for the TQFP-48 (7x7) package on a 4-layer JEDEC test board and 230 mW dissipation, the junction temperature rise above ambient is roughly 11.5 C, leaving ample margin under the 125 C maximum for the -40 to +85 C industrial range. However, on smaller 2-layer boards with poor copper pour, theta_JA can exceed 80 C/W, so always stitch the exposed pad with multiple vias to a continuous analog ground pour to keep junction temperature in spec at elevated ambient.
Route the CLK input with a 50-100 ohm transmission line, kept short and surrounded by analog ground on both sides, to preserve the clock edge and minimise jitter. Keep the analog input traces matched in length and impedance to within 0.5 mm so that channel-to-channel skew remains below the datasheet limit. Shield the high-speed digital data bus (D0A-D11A, D0B-D11B) from the analog inputs with a ground pour and avoid routing digital traces directly over the analog input region of the package.
Do not omit the decoupling capacitor on the VREF pin - it is critical for low reference noise and stable SFDR. Driving the analog inputs beyond the 1 Vpp differential range or with improper common-mode bias causes severe distortion and will degrade SFDR well below the -68 dBc typical figure. Finally, the MUX pin must be clocked at half the ADC sample rate to interleave the two channels correctly; failing to drive MUX results in both channels outputting on the same data bus at the same time, corrupting downstream logic.
Información de cumplimiento
RoHS and lead-free compliance confirmed per STMicroelectronics product page (st.com). Industrial -40 to +85 C operating range only; the TSA1203IF is not AEC-Q100 automotive qualified - use the -E variant for extended-temperature applications.