Part A
AD4115BCPZ
아날로그 디바이스(주)
- Lifecycle
- Active
- Stock
- 6823 PCS
- Series
- 데이터 수집 - 아날로그 변환기(ADC)
Replacement verdict
Compatible functional replacement candidate
The AD4114BCPZ and AD4115BCPZ are pin-compatible, single-supply, 24-bit sigma-delta ADCs from the same Analog Devices AD411x family, sharing the LFCSP-40 package, SPI interface, and identical supply architecture. The AD4115BCPZ offers a higher maximum input channel count and a wider fast-settling output data rate, making it a viable functional upgrade for the AD4114BCPZ in most designs, provided the system firmware is reconfigured for the increased channel count and the application can accommodate the higher full-scale input range. Designers should validate channel configuration, input range scaling, and timing margins before committing to a drop-in replacement.
Package Type
High match
Supply Voltage
High match
Input Channel Count
Validation required
Output Data Rate
Validation required
Parts at a glance
Part B
AD4114BCPZ
아날로그 디바이스(주)
- Lifecycle
- Active
- Stock
- 2561 PCS
- Package
- VFQFN-40
- Series
- 데이터 수집 - 아날로그 변환기(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 | AD4114BCPZ | AD4115BCPZ | Why it matters |
|---|---|---|---|
| Number of Input Channels | 8 single-ended / 4 differential | 16 single-ended / 8 differential | Determines how many analog signals can be measured simultaneously, directly affecting system channel density and multiplexing needs. |
| Resolution | 24-bit | 24-bit | Higher resolution enables detection of smaller signal changes, critical for precision measurement applications. |
| Maximum Sample Rate | 31.25 kSPS | 125 kSPS | Faster sampling supports higher-bandwidth signals and faster scan rates across multiple channels. |
| Input Voltage Range | ±10 V | ±10 V | Defines the maximum signal amplitude the ADC can directly accept without external attenuation. |
| Interface Type | SPI | SPI | Determines compatibility with host microcontrollers and system communication architecture. |
| Package | 40-Lead LFCSP (6x6 mm) | 40-Lead LFCSP (6x6 mm) | Physical footprint and thermal characteristics affect PCB layout and assembly compatibility. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Determines power supply requirements and compatibility with system voltage rails. |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | Defines the environmental conditions under which the device can reliably operate. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD4115BCPZ | AD4114BCPZ |
|---|---|---|
| Part Status | Active | Active |
| Base Product Number | AD4115 | - |
| Number of Bits | 24 | 24 |
| Sampling Rate (Per Second) | 125k | - |
| Number of Inputs | 8, 16 | 8, 16 |
| Input Type | Differential, Single Ended | Differential, Single Ended |
| Data Interface | DSP, MICROWIRE™, QSPI™, and SPI™ | DSP, MICROWIRE™, QSPI™, and SPI™ |
| Configuration | MUX-ADC | MUX-ADC |
| Ratio - S / H: ADC | 0:1 | 0:1 |
| Number of A / D Converters | 1 | - |
| Architecture | Sigma-Delta | Sigma-Delta |
| Reference Type | External, Internal | External, Internal |
| Voltage - Supply, Analog | 4.5V ~ 5.5V | 3V ~ 5.5V |
| Voltage - Supply, Digital | 2V ~ 5.5V | 2V ~ 5.5V |
| Features | Temperature Sensor | Temperature Sensor |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
| Mounting Type | Surface Mount | - |
| Packaging | Tray | - |
| Sampling Rate(Per Second) | - | 31.25k |
| Number of A/D Converters | - | 1 |
Frequently asked questions
What are the main differences between the AD4114BCPZ and AD4115BCPZ?
The AD4114BCPZ is a 24-bit sigma-delta ADC with 8 single-ended or 4 differential input channels, supporting voltage inputs up to ±10 V. The AD4115BCPZ is a 24-bit sigma-delta ADC with 16 single-ended or 8 differential input channels, also supporting voltage inputs up to ±10 V. The primary difference is channel count: the AD4115 provides twice the input channels of the AD4114.
Are the AD4114BCPZ and AD4115BCPZ pin-compatible?
No. The AD4114BCPZ and AD4115BCPZ are not pin-compatible. The AD4115BCPZ has additional input pins to accommodate its higher channel count, and the two devices use different pin configurations despite sharing the same 40-lead LFCSP package footprint.
Do the AD4114BCPZ and AD4115BCPZ use the same package?
Yes. Both the AD4114BCPZ and AD4115BCPZ are offered in a 40-lead LFCSP (CP-40-10) package. However, despite the identical package type, they are not pin-compatible due to different pin assignments.
What is the maximum input voltage range for the AD4114BCPZ and AD4115BCPZ?
Both the AD4114BCPZ and AD4115BCPZ support voltage input ranges up to ±10 V. They also support other programmable gain settings that allow smaller input ranges. Both devices integrate an analog front end that allows direct connection of industrial voltage signals without external signal conditioning.
Can the AD4114BCPZ and AD4115BCPZ measure current inputs directly?
No. The AD4114BCPZ and AD4115BCPZ are voltage-input ADCs. They do not include a current-input channel. For current measurement, an external precision shunt resistor is required to convert the current to a voltage within the ADC input range.
What is the maximum output data rate of the AD4114BCPZ and AD4115BCPZ?
Both the AD4114BCPZ and AD4115BCPZ support output data rates up to 31.25 kSPS in continuous conversion mode. The AD4115BCPZ, with its higher channel count, can scan all channels at a proportionally lower per-channel rate when cycling through all inputs.
Do the AD4114BCPZ and AD4115BCPZ include internal reference and oscillator?
Yes. Both the AD4114BCPZ and AD4115BCPZ integrate an on-chip 2.5 V reference with ±0.05% initial accuracy and a typical temperature coefficient of 5 ppm/°C, as well as an internal oscillator. This reduces external component count for isolated or space-constrained designs.
Which applications typically favor the AD4115BCPZ over the AD4114BCPZ?
The AD4115BCPZ is preferred when a design requires more than 8 single-ended or 4 differential voltage inputs in a single ADC. Applications such as multi-channel PLC analog input modules, process control systems, and data acquisition systems with high channel density benefit from the AD4115BCPZ's 16 single-ended or 8 differential channels. The AD4114BCPZ is suitable for lower channel-count designs where 8 single-ended or 4 differential inputs are sufficient.