Part A
AD9945KCPZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5858 ПКС
- Package
- WFQFN-32
- Series
- Интерфейс - интерфейсы датчиков и детекторов
Replacement verdict
Compatible functional replacement candidate
The AD9945KCPZ and AD9944KCPZRL are both complete 12-bit CCD signal processors from Analog Devices sharing the same 32-lead LFCSP package, supply architecture, and three-wire serial interface, making them strong functional replacement candidates. The AD9945KCPZ offers a higher maximum pixel rate of 40 MSPS versus 25 MSPS for the AD9944KCPZRL, so the AD9945KCPZ can directly serve applications designed around the AD9944KCPZRL provided the system timing is validated against the faster device. Designers should confirm register-map and timing compatibility before substituting in either direction.
Package Type
High match
Resolution
High match
Maximum Pixel Rate
Validation required
Supply Voltage
High match
Parts at a glance
Part B
AD9944KCPZRL
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3523 ПКС
- Package
- WFQFN-32
- Series
- Интерфейс - интерфейсы датчиков и детекторов
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD9945KCPZ | AD9944KCPZRL | Why it matters |
|---|---|---|---|
| Resolution (ADC Bits) | 12 bit | 12 bit | Bit depth determines the dynamic range and quantization precision of the digitized signal; both being 12-bit means comparable tonal resolution. |
| Maximum Sampling Rate | 40 MSPS | 40 MSPS | Sample rate sets the maximum pixel throughput; identical rates mean both can support the same sensor readout speeds. |
| Number of ADC Channels | 1 | 1 | Channel count determines how many analog signal paths can be digitized simultaneously; both are single-channel front ends. |
| Input Signal Range | 1.0 V p-p (typical) | 1.0 V p-p (typical) | The input full-scale range must match the sensor output swing to avoid clipping or loss of resolution. |
| Supply Voltage | 3.0 V to 3.6 V (analog and digital) | 3.0 V to 3.6 V (analog and digital) | Supply voltage compatibility ensures the part can drop into the same power rail design without level shifting. |
| Package | 32-Lead LFCSP | 32-Lead LFCSP | Package and pinout must match for board-level drop-in substitutability. |
| Operating Temperature Range | -20°C to +85°C | -20°C to +85°C | Temperature range affects suitability for the target application environment; matching ranges indicate equivalent environmental tolerance. |
| On-Chip Timing Generator / V-Driver | Integrated timing generator and vertical driver | Integrated timing generator and vertical driver | Integrated timing and driver functions reduce external component count and define the level of system integration for CCD signal chains. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9945KCPZ | AD9944KCPZRL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Active |
| Type | CCD Signal Processor, 12-Bit | CCD Signal Processor, 12-Bit |
| Input Type | Logic | Logic |
| Output Type | Logic | Logic |
| Operating Temperature | -20°C ~ 85°C | -20°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the AD9945KCPZ and AD9944KCPZRL?
The AD9945KCPZ and AD9944KCPZRL are complete 12-bit CCD signal processors from Analog Devices designed for digital still cameras and other CCD imaging applications. Both integrate correlated double sampling (CDS), programmable gain amplification (PGA), and a 12-bit A/D converter in a 32-lead LFCSP package.
What is the maximum pixel conversion rate of these devices?
Both the AD9945KCPZ and AD9944KCPZRL support a maximum conversion rate of 40 MSPS (megasamples per second), enabling high-speed CCD pixel processing for demanding imaging applications.
How do the AD9945KCPZ and AD9944KCPZRL differ?
The primary difference is the packaging and ordering format: the AD9945KCPZ is supplied in a 32-lead LFCSP (5 mm × 5 mm) tray format, while the AD9944KCPZRL is the tape-and-reel version of the same 32-lead LFCSP device. Functionally, both are 12-bit, 40 MSPS CCD signal processors with identical core specifications; the suffix difference reflects packaging and shipment configuration rather than electrical performance.
What is the input signal range and PGA gain range of these CCD signal processors?
Both devices feature a programmable gain amplifier with a gain range of 0 dB to +36 dB, and the analog input is designed for CCD signals with a typical full-scale input range of approximately 1 V p-p, configurable through the internal registers.
What digital interface do the AD9945KCPZ and AD9944KCPZRL use for configuration?
Both devices are configured through a 3-wire serial interface (SDATA, SCLK, SLATCH) that allows programming of the internal registers, including PGA gain, CDS timing, and clamp settings, from a host microcontroller or DSP.
What is the operating supply voltage and power consumption?
Both the AD9945KCPZ and AD9944KCPZRL operate from a single 3.0 V to 3.6 V analog supply (typical 3.3 V) with a separate digital supply, and they typically consume approximately 150 mW at 40 MSPS, making them suitable for portable imaging systems.
Are the AD9945KCPZ and AD9944KCPZRL pin-compatible and interchangeable?
Yes. Both parts are housed in the identical 32-lead LFCSP (5 mm × 5 mm) package with the same pinout and electrical specifications. The AD9944KCPZRL is the tape-and-reel ordering variant of the same silicon, so they are functionally interchangeable provided the packaging format suits the assembly process.
What is the operating temperature range for these devices?
Both the AD9945KCPZ and AD9944KCPZRL are specified for operation over the commercial temperature range of 0°C to +70°C, consistent with their KCPZ grade designation.