Part A
ADS5400IPZP
Texas Instruments
- Lifecycle
- Active
- Stock
- 7717 PCS
- Package
- HTQFP-100
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Replacement verdict
Not a drop-in replacement
The ADS5400IPZP and ADS5424IPGPR are not drop-in replacements for one another. Although both are high-speed analog-to-digital converters, they differ in resolution, sampling rate, package and pinout, and digital output interface, so a direct board-level substitution is not possible without redesign and validation.
Different resolution
Different sampling rate
Different package and pinout
Different output interface
Parts at a glance
Part B
ADS5424IPGPR
Texas Instruments
- Lifecycle
- Active
- Stock
- 3361 PCS
- Package
- TQFP-52
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADS5400IPZP | ADS5424IPGPR | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 14 bit | Higher resolution provides finer quantization and better dynamic range, which directly affects measurement accuracy and SNR. |
| Sampling Rate | 1 GSPS | 40 MSPS | The maximum sample rate determines the input bandwidth the ADC can capture; a 25x difference fundamentally changes the target application. |
| Input Type | Differential | Differential | Differential inputs improve common-mode rejection and noise immunity; both parts share this, easing analog front-end reuse. |
| Output Interface | LVDS (DDR) | Parallel CMOS | The digital output format dictates the FPGA/ASIC interface and PCB routing; LVDS vs CMOS requires different receiver logic. |
| Supply Voltage | 3.3 V analog / 1.8 V digital | 5 V analog / 3.3 V digital | Different supply rails affect power sequencing, regulator design, and board-level power architecture. |
| Package | 100-pin HTQFP (PZP) | 52-pin HTQFP (PGP) | Package footprint and pin count determine PCB layout compatibility; these are not drop-in replacements. |
| Power Consumption | ~2.4 W typical | ~1.4 W typical | Power dissipation impacts thermal design, supply sizing, and achievable channel density. |
| SFDR | ~70 dBc | ~85 dBc | Spurious-free dynamic range indicates spectral purity; higher SFDR is critical for communications and instrumentation receivers. |
| Operating Temperature Range | -40 to +85 °C | -40 to +85 °C | Industrial temperature range suitability is essential for reliable operation in harsh environments; both parts match here. |
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Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS5400IPZP | ADS5424IPGPR |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Active |
| Number of Bits | 12 | 14 |
| Sampling Rate(Per Second) | 1G | 105M |
| Number of Inputs | 1 | 1 |
| Input Type | Differential | Differential |
| Data Interface | LVDS - Parallel | Parallel |
| Configuration | S/H-ADC | S/H-ADC |
| Ratio - S / H: ADC | 1:1 | 1:1 |
| Number of A/D Converters | 1 | 1 |
| Architecture | Pipelined | Pipelined |
| Reference Type | External, Internal | Internal |
| Voltage - Supply, Analog | 3.135V ~ 3.465V, 5V | 5V |
| Voltage - Supply, Digital | 3.135V ~ 3.465V | 5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Features | Temperature Sensor | - |
Frequently asked questions
What are the key architectural differences between the ADS5400IPZP and ADS5424IPGPR?
The ADS5400IPZP is a 12-bit, 1-GSPS analog-to-digital converter, while the ADS5424IPGPR is a 14-bit, 105-MSPS ADC. The ADS5400 uses a faster pipeline architecture targeting high-speed digitization, whereas the ADS5424 offers higher resolution at a lower sampling rate for precision applications.
Do the ADS5400IPZP and ADS5424IPGPR use the same package and pinout?
No. The ADS5400IPZP is supplied in a 100-pin HTQFP (PZP) package, and the ADS5424IPGPR is supplied in a 52-pin HTQFP (PGP) package. The package sizes, pin counts, and pin functions differ, so they are not pin-compatible or drop-in replacements for each other.
What are the sampling rate and resolution specifications for each device?
The ADS5400IPZP provides 12-bit resolution at a maximum sampling rate of 1 GSPS. The ADS5424IPGPR provides 14-bit resolution at a maximum sampling rate of 105 MSPS. Selection depends on whether system priority is maximum sample rate or higher dynamic range and resolution.
How do the input interfaces of the ADS5400IPZP and ADS5424IPGPR differ?
The ADS5400IPZP uses a differential analog input with an internal buffer and supports a high-speed clock input suitable for 1-GSPS operation. The ADS5424IPGPR also uses a differential analog input but is optimized for lower-speed, high-resolution signal chains. Input full-scale range and termination requirements should be verified against each device's datasheet before design.
What are the typical output interface formats for these two ADCs?
The ADS5400IPZP provides parallel LVDS-compatible output data at 12 bits, supporting the high data throughput required at 1 GSPS. The ADS5424IPGPR provides parallel CMOS-compatible output data at 14 bits, suited to its 105-MSPS rate. The output logic families and timing must be matched to the receiving FPGA or DSP.
Can the ADS5400IPZP and ADS5424IPGPR share the same power supply design?
Both devices require separate analog and digital supply rails, typically 3.3 V and 1.8 V domains depending on the specific datasheet configuration. However, the current consumption and decoupling requirements differ significantly because of the different sampling rates and architectures, so the power delivery network must be designed individually for each part.
Which device is better suited for high-resolution instrumentation versus high-speed capture?
The ADS5424IPGPR, with 14-bit resolution at 105 MSPS, is better suited to high-resolution instrumentation, medical imaging, and precision measurement where dynamic range is critical. The ADS5400IPZP, with 12-bit resolution at 1 GSPS, is better suited to high-speed capture applications such as radar, wideband communications, and high-speed test equipment.
Are the ADS5400IPZP and ADS5424IPGPR directly interchangeable in an existing design?
No. Differences in resolution, sampling rate, package footprint, pin count, output interface, and power requirements mean the two devices are not directly interchangeable. Any substitution requires a full schematic, layout, and firmware review against the respective manufacturer datasheets.