ADS5203IPFBRG4 - 10-Bit 40MSPS Dual ADC | Texas Instruments
MPN: ADS5203IPFBRG4 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.95 | $8.95 |
| 10 | $8.06 | $80.60 |
| 100 | $7.16 | $716.00 |
| 500 | $6.44 | $3,220.00 |
| 1,000 | $5.73 | $5,730.00 |
ADS5203IPFBRG4 Overview
An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples continuous analog voltage at discrete time intervals and quantizes each sample into a binary code, enabling digital processing of real-world signals. Pipeline ADCs such as the ADS5203 use a multi-stage architecture to balance high sample rate with low power consumption, occupying a middle ground in the data-converter hierarchy between precision SAR converters (>1 MSPS, low speed, high resolution) and ultra-high-speed flash converters (>100 MSPS, low resolution, high power).
Key differentiating specifications include 40 MSPS maximum sample rate per channel, pipelined architecture for low-latency throughput, internal reference, and a wide 300 MHz analog input bandwidth. The 3.3V single-suprail operation simplifies board-level power design, while the low power dissipation budget makes the part attractive for portable and thermally constrained systems.
Pipelined ADCs are typically used in data-acquisition front ends, communications IF strips, CCD imaging pipelines, and video digitizers. The dual-channel, simultaneous-sampling architecture uniquely suits I/Q demodulation, dual-axis instrumentation, and multi-sensor imaging arrays where phase or timing alignment between channels must be preserved.
Typical application areas include set-top box video digitizers, IF sampling for software-defined radio, industrial process control data acquisition modules, and CCD line-scan imaging front ends. The differential analog input structure improves common-mode noise rejection in electrically noisy industrial enclosures.
When designing with this device, pay close attention to PCB layout for the analog input traces - keep them short, length-matched, and surrounded by a solid ground pour to preserve the 73 dB SFDR. Use a low-noise LDO (e.g., TPS7A47xx) on the 3.3V analog rail to prevent switching noise from corrupting the converter's reference voltage and degrading SNR.
Drop-in alternatives for ADS5203IPFBRG4 — 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 ADS5203IPFBRG4 (same form factor and footprint) — differing in Package, Operating Temperature, Input Type, Number of Channels, Output Interface.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADS5203IPFBR
✅ Drop-In📋 Reference alternative (not in catalog)
ADS5103IPFBRG4
✅ Drop-In✓ In Stock
$4.4 / Unit
View Datasheet →ADS5103CPFBRG4
✅ Drop-In✓ In Stock
$4.95 / Unit
View Datasheet →ADS5103CPFBR
✅ Drop-In✓ In Stock
$4.45 / Unit
View Datasheet →ADS5102IPFBR
✅ Drop-In✓ In Stock
$5.05 / Unit
View Datasheet →ADS5203IPFBRG4 Maximum Ratings & Electrical Characteristics
| Resolution | 10 bit |
| Number of Channels | 2 (dual, simultaneous sampling) |
| Sample Rate (Max) | 40 MSPS |
| Architecture | Pipelined |
| Analog Input Type | Differential or single-ended |
| SNR | 60 dB at fIN = 10.5 MHz |
| SFDR | 73 dB at fIN = 10.5 MHz |
| Analog Input Bandwidth | 300 MHz |
| Supply Voltage | 3.3 V (single supply) |
| Output Interface | Single or dual parallel bus |
| Operating Temperature | -40 C to +85 C (industrial) |
| Package | 48-TQFP (PFB, 7x7 mm) |
| Mounting Type | Surface Mount |
| Sample-and-Hold | Dual simultaneous S/H inputs |
ADS5203IPFBRG4 Pin Configuration
| Pin 1 | DGND — Digital ground |
| Pin 2 | AVDD — Analog supply (3.3V) |
| Pin 3 | AINP_A — Channel A positive analog input |
| Pin 4 | AINM_A — Channel A negative analog input |
| Pin 5 | AGND — Analog ground |
| Pin 6 | VREF — Internal reference decoupling |
| Pin 7 | REFT — Reference top decoupling |
| Pin 8 | REFB — Reference bottom decoupling |
| Pin 9 | AGND — Analog ground |
| Pin 10 | AINP_B — Channel B positive analog input |
| Pin 11 | AINM_B — Channel B negative analog input |
| Pin 12 | AVDD — Analog supply (3.3V) |
| Pin 13 | DGND — Digital ground |
| Pin 14 | DCLK — Data clock output |
| Pin 15 | DRDY_A — Channel A data ready |
| Pin 16 | DGND — Digital ground |
| Pin 17 | DB0_A — Channel A digital output bit 0 (LSB) |
| Pin 18 | DB1_A — Channel A digital output bit 1 |
| Pin 19 | DB2_A — Channel A digital output bit 2 |
| Pin 20 | DB3_A — Channel A digital output bit 3 |
| Pin 21 | DB4_A — Channel A digital output bit 4 |
| Pin 22 | DB5_A — Channel A digital output bit 5 |
| Pin 23 | DB6_A — Channel A digital output bit 6 |
| Pin 24 | DB7_A — Channel A digital output bit 7 |
| Pin 25 | DB8_A — Channel A digital output bit 8 |
| Pin 26 | DB9_A — Channel A digital output bit 9 (MSB) |
| Pin 27 | DVDD — Digital supply (3.3V) |
| Pin 28 | DGND — Digital ground |
| Pin 29 | DRDY_B — Channel B data ready |
| Pin 30 | OEB — Output enable bar (active-low) |
| Pin 31 | DB0_B — Channel B digital output bit 0 (LSB) |
| Pin 32 | DB1_B — Channel B digital output bit 1 |
| Pin 33 | DB2_B — Channel B digital output bit 2 |
| Pin 34 | DB3_B — Channel B digital output bit 3 |
| Pin 35 | DB4_B — Channel B digital output bit 4 |
| Pin 36 | DB5_B — Channel B digital output bit 5 |
| Pin 37 | DB6_B — Channel B digital output bit 6 |
| Pin 38 | DB7_B — Channel B digital output bit 7 |
| Pin 39 | DB8_B — Channel B digital output bit 8 |
| Pin 40 | DB9_B — Channel B digital output bit 9 (MSB) |
| Pin 41 | DVDD — Digital supply (3.3V) |
| Pin 42 | DGND — Digital ground |
| Pin 43 | CLKP — External clock input (positive) |
| Pin 44 | CLKM — External clock input (negative) |
| Pin 45 | PDN — Power-down (active-high) |
| Pin 46 | MODE — Output mode select (single/dual bus) |
| Pin 47 | RESET — Reset (active-low) |
| Pin 48 | AGND — Analog ground |
Typical Applications
ADS5203IPFBRG4 is suitable for 6 applications: Set-Top Box Video Digitizers, Software-Defined Radio IF Sampling, Industrial Process Control Data Acquisition, CCD Line-Scan Imaging Front Ends, Digital Oscilloscope and Test Instrumentation Front End, Medical Ultrasound / Diagnostic Imaging.
Set-Top Box Video Digitizers
The ADS5203IPFBRG4 is well-suited for set-top box composite and component video digitizers, where its 10-bit resolution and 40 MSPS sample rate per channel can capture standard-definition video (NTSC/PAL baseband ~5-7 MHz) with substantial oversampling margin. The dual simultaneous-sampling architecture allows stereo audio digitization or Y/C separation on a single IC, reducing board area and BOM cost. With 73 dB SFDR at 10.5 MHz analog input, the converter preserves chrominance luma fidelity in MPEG-2/H.264 encoding pipelines. Differential analog inputs reject common-mode noise from switching power supplies in cost-sensitive consumer video equipment. For best signal-to-noise, place a low-noise LDO such as TPS7A4700 on the 3.3V AVDD rail and use length-matched 50 ohm impedance-controlled input traces.
Recommended
Software-Defined Radio IF Sampling
In software-defined radio (SDR) designs, the ADS5203IPFBRG4 functions as an IF-sampling ADC for low-IF or quadrature-demodulation receiver chains operating in the 1-20 MHz intermediate-frequency range. Its dual simultaneous-sampling inputs accept I and Q baseband signals from a quadrature demodulator, preserving phase coherence critical for digital demodulation. The 300 MHz analog input bandwidth allows undersampling of higher-IF signals when paired with appropriate anti-alias filtering, reducing analog complexity in the front end. The 3.3V single-supply operation simplifies battery-powered SDR dongles and portable spectrum analyzers, and 60 dB SNR provides adequate dynamic range for weak-signal demodulation. Place the device close to a TPS7A4700 LDO analog rail to meet the documented SFDR performance.
Recommended
Industrial Process Control Data Acquisition
The ADS5203IPFBRG4 serves dual-channel 10-bit 40 MSPS analog front ends for industrial process control modules monitoring vibration, strain gauge bridges, or high-speed current transducers. The industrial -40 to +85 C operating temperature range supports deployment in factory automation cells and outdoor instrumentation cabinets. Simultaneous sampling on both channels preserves timing correlation between paired sensors (e.g., differential pressure transducers or three-phase motor current monitoring). The differential input structure rejects common-mode interference from variable-frequency drives and motor inverters on the factory floor. Use the ADC's digital output to feed an FPGA or DSP implementing digital filtering and PLC-protocol conversion. Power the analog supply via a TPS7A4700 LDO to prevent switching-noise coupling from industrial 24V bus converters.
Recommended
CCD Line-Scan Imaging Front Ends
CCD line-scan cameras for industrial inspection and document scanning use the ADS5203IPFBRG4 to digitize pixel rates up to 40 MHz per channel, supporting two-color (RGB) or dual-line simultaneous capture architectures. The 10-bit resolution provides 1024 gray levels, sufficient for defect-detection algorithms in machine-vision systems. The dual simultaneous-sampling inputs enable side-by-side red/blue or RGB line digitization with perfect pixel-by-pixel alignment. Low power dissipation allows the ADC to be placed adjacent to the CCD output amplifier without introducing thermal drift. The 48-TQFP 7x7 mm package fits within tight camera-head PCB real estate. Power the analog rail via a TPS7A4700 LDO to meet the 73 dB SFDR target essential for color fidelity.
Recommended
Digital Oscilloscope and Test Instrumentation Front End
Entry-level two-channel digital oscilloscopes and bench-top data loggers use the ADS5203IPFBRG4 as an IF/digitizer stage for sample rates up to 40 MSPS per channel, adequate for audio-bandwidth and base-bandwidth signal analysis. The dual simultaneous-sampling inputs enable two scope channels on a single IC, while the 10-bit resolution provides sufficient dynamic range for general-purpose waveform capture. The pipelined architecture delivers low-latency throughput compared to sigma-delta converters, supporting real-time triggering. The 3.3V single supply simplifies portable handheld instrument designs, and the -40 to +85 C temperature range covers both laboratory and field-deployed environments. Power the analog supply via a TPS7A4700 LDO to maintain 60 dB SNR on weak input signals.
Recommended
Medical Ultrasound / Diagnostic Imaging
Portable medical ultrasound and patient-monitoring equipment benefits from the ADS5203IPFBRG4's dual simultaneous-sampling channels to capture paired transducer echo signals with precise phase alignment across two beamform channels. The 10-bit resolution and 40 MSPS sample rate provide adequate dynamic range for echo-pulse envelope detection. The 3.3V single-supply operation simplifies battery-powered handheld ultrasound probes, supporting point-of-care diagnostics. The differential inputs improve common-mode rejection of EMI from adjacent switching power supplies in compact medical chassis. Although this part is not AEC-Q100 qualified, its 48-TQFP industrial-grade variant is widely used in non-automotive medical equipment. Power the analog supply via a TPS7A4700 LDO with star-grounding to preserve SNR performance.
Recommended
Recommended Products Summary
Engineering reference data for ADS5203IPFBRG4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADS5203IPFBR | ADS5103IPFBRG4 | ADS5103CPFBRG4 | ADS5103CPFBR | ADS5102IPFBR |
|---|---|---|---|---|---|---|
| Package | 48-TQFP (PFB) | 48-TQFP (PFB) - same | 48-TQFP (PFB) - same | 48-TQFP (PFB) - same | 48-TQFP (PFB) - same | 48-TQFP (PFB) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit |
| Number of Channels | 2 dual simultaneous | 2 dual simultaneous | 2 dual simultaneous | 2 dual simultaneous | 2 dual simultaneous | 2 dual simultaneous |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
| Supply Voltage | 3.3V single | 3.3V single | 3.3V single | 3.3V single | 3.3V single | 3.3V single |
| Terminal Finish | Pb-free (RoHS G4) | SnPb (legacy/commercial) | Pb-free (RoHS G4) | Pb-free (RoHS G4) | SnPb (legacy/commercial) | SnPb (legacy/commercial) |
| Temperature Grade | Industrial -40 to +85 C | Industrial -40 to +85 C | Industrial | Commercial | Commercial | Industrial |
Key Differentiators
- Pb-free RoHS-compliant terminal finish (vs ADS5203IPFBR (non-G4))
- Industrial -40 to +85 C temperature range (vs ADS5103CPFBRG4 (commercial grade))
- Simultaneous dual-channel sampling (vs ADS5102IPFBR (multiplexed dual input))
Design Notes
The 48-TQFP PFB package requires careful analog/digital ground separation with a single-point tie at the converter's AGND/DGND pin to achieve the datasheet's 60 dB SNR. Estimated: digital switching currents on the parallel output buses can inject >40 mA noise spikes into a poorly-star-grounded layout, easily degrading SNR by 5-10 dB. Use a 4-layer PCB with dedicated analog and digital power planes, and route differential input traces (AINP_A/AINM_A, AINP_B/AINM_B) symmetrically with 50 ohm controlled impedance. Place the AVDD 0.1uF + 10uF ceramic decoupling network within 5 mm of pins 2 and 12.
Power the AVDD analog supply from a low-noise LDO such as TPS7A4700 rather than directly from a switching regulator. Estimated: at 40 MSPS with full-scale 1Vpp analog input, the ADS5203IPFBRG4 draws approximately 50-60 mA from the 3.3V supply (per datasheet typical characteristics). Any supply ripple above 1 mVrms at the AVDD pin directly degrades the 73 dB SFDR target. Place a TPS7A4700 or equivalent low-noise LDO within 25 mm of the analog supply pins and add a ferrite bead + 10 uF + 0.1 uF pi-filter network to isolate the ADC from upstream switching-converter noise.
Route the differential analog inputs (AINP_x, AINM_x) as a tightly-coupled differential pair with matched trace lengths (delta < 0.5 mm) to preserve common-mode noise rejection across the 300 MHz input bandwidth. Keep the parallel digital output buses (DB0_A-DB9_A, DB0_B-DB9_B) on the opposite side of the package from the analog inputs to minimize digital-to-analog coupling. Series-terminate each digital output with 33 ohm resistors placed within 5 mm of the ADC pins to dampen transmission-line reflections on the 40 MHz data clock (DCLK).
Do not operate the ADS5203IPFBRG4 with the internal reference (VREF/REFT/REFB pins) floating - these pins require 0.1uF ceramic decoupling to analog ground as close as possible (within 3 mm). Driving the CLKP/CLKM clock inputs with a non-differential source will degrade SNR; use an LVDS or PECL clock driver such as CDCLVC1310 or equivalent to maintain the 60 dB SNR figure. Do not exceed the -0.3V to +4V absolute-maximum rating on any analog input pin or the device will suffer permanent damage.
Compliance Information
G4 suffix indicates Pb-free RoHS-compliant terminal finish per TI part-number decoder. Not AEC-Q100 qualified - not recommended for automotive under-hood deployments. Halogen-free status not explicitly stated in provided distributor data; engineers should request latest TI declaration of conformity for halogen-free confirmation.
