Part A
ADS5400IPZP
Техасские инструменты
- Lifecycle
- Active
- Stock
- 7717 ПКС
- Package
- HTQFP-100
- Series
- Сбор данных - аналогово-цифровые преобразователи (ADC)
Replacement verdict
Not a drop-in replacement
The ADS5400IPZP and ADS5440IPFP are both 12-bit analog-to-digital converters, but they differ fundamentally in sampling rate, analog input bandwidth, package footprint, and power dissipation, so neither device can directly substitute for the other without redesign of the signal chain, board layout, and thermal plan.
Different sampling rate
Different input bandwidth
Different package footprint
Different power dissipation
Parts at a glance
Part B
ADS5440IPFP
Техасские инструменты
- Lifecycle
- Active
- Stock
- 328 ПКС
- Package
- TQFP-80
- Series
- Сбор данных - аналогово-цифровые преобразователи (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 | ADS5440IPFP | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 13 bit | Resolution determines the quantization granularity; a 13-bit ADC provides finer amplitude detail than a 12-bit device, affecting achievable SNR and dynamic range. |
| Sampling Rate | 1 GSPS | 210 MSPS | Maximum sample rate defines the input bandwidth and Nyquist zone the converter can support; the two parts target very different signal bandwidths. |
| Input Type | Differential | Differential | Differential inputs improve common-mode rejection and even-order distortion performance; both parts use differential analog inputs. |
| Output Interface | LVDS (DDR) | LVDS (DDR) | The digital output format must match the receiving FPGA/ASIC interface; both use parallel LVDS DDR outputs. |
| Supply Voltage | 3.3 V analog / 1.8 V digital | 3.3 V analog / 3.3 V digital | Supply rails determine power delivery and level-shifting requirements on the board; differing digital rails affect compatibility with downstream logic. |
| Power Consumption | Approx. 2.4 W | Approx. 1.4 W | Power dissipation drives thermal design and supply sizing; the higher-speed device consumes substantially more power. |
| Package | 100-pin HTQFP (PZP) | 80-pin HTQFP (PFP) | Package footprint and pinout must match the PCB land pattern; different packages are not drop-in compatible. |
| Operating Temperature Range | -40 to +85 °C | -40 to +85 °C | Industrial temperature range ensures reliable operation across harsh environments; both parts share the same range. |
| SFDR | Approx. 75 dBc | Approx. 80 dBc | Spurious-free dynamic range indicates spectral purity; higher SFDR benefits receivers and spectrum-sensitive applications. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS5400IPZP | ADS5440IPFP |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Texas Instruments |
| Part Status | Active | Active |
| Number of Bits | 12 | 13 |
| Sampling Rate(Per Second) | 1G | 210M |
| 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 differences between the ADS5400IPZP and ADS5440IPFP?
The ADS5400IPZP is a 12-bit, 1-GSPS analog-to-digital converter in a 100-pin HTQFP (PZP) package, while the ADS5440IPFP is a 13-bit, 210-MSPS ADC in a 80-pin HTQFP (PFP) package. They differ in resolution, maximum sample rate, package pin count, and power consumption, so they are not pin-compatible or drop-in replacements.
Are the ADS5400IPZP and ADS5440IPFP pin-compatible?
No. The ADS5400IPZP uses a 100-pin HTQFP (PZP) package and the ADS5440IPFP uses an 80-pin HTQFP (PFP) package. The different pin counts and pinouts prevent direct PCB footprint compatibility.
What are the maximum sample rates of these two ADCs?
The ADS5400IPZP supports a maximum sample rate of 1 GSPS (1000 MSPS), while the ADS5440IPFP supports a maximum sample rate of 210 MSPS. The ADS5400 is intended for higher-speed digitization applications.
How do the resolutions of the ADS5400IPZP and ADS5440IPFP compare?
The ADS5400IPZP provides 12-bit resolution, whereas the ADS5440IPFP provides 13-bit resolution. The ADS5440 offers one additional bit of resolution but at a significantly lower maximum sample rate.
Do both devices use the same digital output interface?
Both devices provide parallel LVDS-compatible digital output data, but the output bus width differs due to the 12-bit versus 13-bit resolution. The ADS5400IPZP outputs 12-bit data and the ADS5440IPFP outputs 13-bit data, so the receiving FPGA or DSP interface must be configured accordingly.
What are the typical power consumption figures for these ADCs?
The ADS5400IPZP typically consumes approximately 2.7 W at 1 GSPS, while the ADS5440IPFP typically consumes approximately 1.4 W at 210 MSPS. The higher power of the ADS5400 reflects its higher sample rate and wider output interface.
Can the ADS5440IPFP be used as a lower-speed substitute for the ADS5400IPZP?
Only if the system can tolerate a reduction from 1 GSPS to 210 MSPS and a change from 12-bit to 13-bit resolution, and if the PCB is redesigned for the 80-pin PFP package. The devices are not footprint-compatible, so a direct board-level substitution is not possible.
What are the input signal ranges and coupling requirements for these ADCs?
Both the ADS5400IPZP and ADS5440IPFP use differential analog inputs with an internal reference and are typically AC-coupled in high-speed signal chains. The analog input full-scale range and common-mode requirements should be verified against the respective manufacturer datasheets before designing the front-end network.