Overview
The AD9948KCPZ, produced by Analog Devices Inc., is a highly integrated 10-Bit CCD Signal Processor designed specifically for digital still camera applications. It operates at pixel rates of up to 25 MHz and includes a complete analog front end with A/D conversion, combined with a programmable timing driver. The device features a Precision Timing core, allowing for high-speed clock adjustments with 800 ps resolution. The analog front end includes components such as a Correlated Double Sampler (CDS), a Pixel Gain Amplifier (PxGA), a Variable Gain Amplifier (VGA), and a black level clamp, along with a 25 MHz 10-bit A/D converter. The timing driver provides high-speed CCD clock drivers for RG and H1–H4, and operation is programmed using a 3-wire serial interface. The AD9948KCPZ is packaged in a 40-lead LFCSP package and operates over an temperature range of –20°C to +85°C.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Pixel Rate | - | - | 25 | MHz | |
| Resolution | - | - | 10-bit | - | |
| High Level Input Voltage | VIH | 2.1 | - | V | |
| Low Level Input Voltage | VIL | 0.6 | - | V | |
| High Level Input Current | IIH | - | 10 | µA | |
| Low Level Input Current | IIL | - | 10 | µA | |
| Input Capacitance | CIN | - | 10 | pF | |
| Master Clock Period | tCLI | 40 | - | ns | |
| Operating Temperature | - | -20 | 85 | °C |
Key Features
- Complete analog front end with A/D conversion, including CDS, PxGA, VGA, and black level clamp.
- Programmable timing driver with Precision Timing core allowing 800 ps resolution for high-speed clock adjustments.
- 25 MHz 10-bit A/D converter.
- High-speed CCD clock drivers for RG and H1–H4.
- Operation programmed using a 3-wire serial interface.
- Packaged in a 40-lead LFCSP package.
- On-chip 3 V horizontal and RG drivers.
- Supports a wide operating temperature range of –20°C to +85°C.
Applications
- Digital still cameras.
- High-speed digital imaging applications.
Q & A
- What is the maximum pixel rate supported by the AD9948KCPZ?
The AD9948KCPZ supports pixel rates of up to 25 MHz.
- What is the resolution of the A/D converter in the AD9948KCPZ?
The A/D converter in the AD9948KCPZ has a resolution of 10 bits.
- What is the operating temperature range of the AD9948KCPZ?
The AD9948KCPZ operates over a temperature range of –20°C to +85°C.
- How is the operation of the AD9948KCPZ programmed?
The operation of the AD9948KCPZ is programmed using a 3-wire serial interface.
- What type of package does the AD9948KCPZ come in?
The AD9948KCPZ is packaged in a 40-lead LFCSP package.
- What are the key components of the analog front end in the AD9948KCPZ?
The analog front end includes a CDS, PxGA, VGA, black level clamp, and a 25 MHz 10-bit A/D converter.
- What is the Precision Timing core used for in the AD9948KCPZ?
The Precision Timing core allows for high-speed clock adjustments with 800 ps resolution.
- What are the typical applications of the AD9948KCPZ?
The AD9948KCPZ is typically used in digital still cameras and high-speed digital imaging applications.
- Does the AD9948KCPZ include on-chip drivers for CCD clocks?
Yes, the AD9948KCPZ includes on-chip 3 V horizontal and RG drivers for CCD clocks.
- Is the AD9948KCPZ still in production?
No, the AD9948KCPZ is listed as obsolete.
