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 ADS5463IPFP and ADS5400IPZP are both 12-bit analog-to-digital converters, but they differ fundamentally in sampling rate, analog input architecture, output interface, and power/package characteristics. The ADS5463IPFP delivers 500 MSPS with a differential analog input and LVDS outputs in a TQFP-52 package, while the ADS5400IPZP provides 1 GSPS with a 1 Vpp buffered input and parallel LVDS outputs in a QFP-100 package. Because these differences affect board layout, clocking, data capture, and thermal design, the two devices are not functionally interchangeable without a full redesign.
Different sampling rate
Different analog input architecture
Different output interface
Different package and footprint
Parts at a glance
Part B
ADS5463IPFP
Texas Instruments
- Lifecycle
- Active
- Stock
- 6870 PCS
- Package
- HTQFP-80
- 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 | ADS5463IPFP | ADS5400IPZP | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Both converters provide 12-bit resolution, so quantization noise floor and nominal SNR capability are comparable. |
| Sampling Rate | 500 MSPS | 1 GSPS | The ADS5400 samples twice as fast, enabling wider signal bandwidth capture and higher oversampling for a given input frequency. |
| Input Type | Differential | Differential | Both accept differential analog inputs, so the same balun/amplifier front-end topology can generally be reused. |
| Output Interface | Parallel LVDS | Parallel LVDS | Matching LVDS output style simplifies FPGA/ASIC capture logic reuse between the two parts. |
| Supply Voltage | 3.3 V analog and digital | 3.3 V analog and digital | Identical supply rails allow the same power tree and decoupling scheme to be shared across designs. |
| Package | 80-pin HTQFP (PFP) | 100-pin HTQFP (PZP) | Different package footprints and pin counts mean the PCB layout cannot be directly reused without redesign. |
| Power Consumption | Approximately 2.2 W | Approximately 3.2 W | Higher power dissipation affects thermal design, supply sizing, and achievable channel density. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Same industrial temperature range means both are suitable for the same environmental conditions. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS5400IPZP | ADS5463IPFP |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 1G | 500M |
| 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 | 3V ~ 3.6V, 5V |
| Voltage - Supply, Digital | 3.135V ~ 3.465V | 3V ~ 3.6V |
| Features | Temperature Sensor | - |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the ADS5463IPFP and ADS5400IPZP?
The ADS5463IPFP is a 12-bit, 500-MSPS analog-to-digital converter in a 100-pin HTQFP (PFP) package, while the ADS5400IPZP is a 12-bit, 1-GSPS ADC in a 100-pin HTQFP (PZP) package. The ADS5400 offers twice the maximum sampling rate of the ADS5463 and is specified for a 1-GSPS maximum conversion rate, whereas the ADS5463 is specified for 500 MSPS.
Are the ADS5463IPFP and ADS5400IPZP pin-compatible?
No. Although both devices are housed in 100-pin HTQFP packages, the ADS5463IPFP uses the PFP package designation and the ADS5400IPZP uses the PZP package designation. Pin assignments and functions differ between the two devices, so they are not drop-in replacements and the PCB layout must be designed for each specific part.
What is the maximum sampling rate of each device?
The ADS5463IPFP supports a maximum sampling rate of 500 MSPS. The ADS5400IPZP supports a maximum sampling rate of 1 GSPS. Designs requiring sample rates above 500 MSPS must use the ADS5400IPZP or another device rated for the higher rate.
Do both converters provide the same resolution and output interface?
Both are 12-bit ADCs. The ADS5463IPFP provides parallel LVDS-compatible output data, and the ADS5400IPZP also provides parallel LVDS output data. Because both use 12-bit resolution and LVDS-type parallel outputs, the digital data format is similar, but timing, clocking requirements, and maximum output rates differ and must be verified against each datasheet.
What are the input signal and clock requirements for these ADCs?
Both devices are high-speed pipeline ADCs that require differential analog input drive and a low-jitter differential clock. The ADS5463IPFP is specified for operation at up to 500 MSPS, and the ADS5400IPZP at up to 1 GSPS. The analog input full-scale range, clock input levels, and jitter sensitivity are defined in the respective manufacturer datasheets and should be reviewed before selecting a clocking and front-end solution.
Can the ADS5463IPFP be replaced by the ADS5400IPZP in an existing design?
Not directly. The devices differ in package pinout (PFP vs PZP), maximum sampling rate (500 MSPS vs 1 GSPS), and associated timing and power specifications. A replacement requires a new PCB layout, revalidation of the clock and analog front end, and confirmation that the system timing supports the higher output data rate of the ADS5400IPZP.
Which device is better suited for higher-bandwidth signal acquisition?
The ADS5400IPZP is better suited for higher-bandwidth acquisition because its 1-GSPS maximum sampling rate supports wider instantaneous bandwidth than the 500-MSPS ADS5463IPFP. For applications within the 500-MSPS limit, the ADS5463IPFP may be sufficient and can reduce data-rate and power demands on the downstream processing chain.