Features: 16-Bit 15 MSPS A/D Converter
3-Channel 16-Bit Operation up to 15 MSPS
1-Channel 16-Bit Operation up to 12.5 MSPS
2-Channel Mode for Mono Sensors with Odd/Even Outputs
Correlated Double Sampling
1~6 Programmable Gain300 mV Programmable Offset
Input Clamp Circuitry
Internal Voltage Reference
Multiplexed Byte-Wide Output
Optional Single Byte Output Mode
3-Wire Serial Digital Interface
3 V/5 V Digital I/O Compatibility
28-Lead SSOP Package
Low Power CMOS: 400 mW (Typ)
Power-Down Mode AvailableApplicationFlatbed Document Scanners
Digital Copier
Multifunction Peripherals
Infrared Imaging Applications
Machine VisionPinout
Specifications
| DNL typ (LSB) |
±0.5LSB |
| INL (LSB) |
±16LSB |
| Input Noise (LSB rms) |
3LSB |
| Input Range (V p-p) |
4V p-p |
| Vos Correction Range (mV) |
±300mV |
| PGA Range (dB) |
6 V/V |
| Power Dissipation (mW) |
400mW |
| Resolution (Bits) |
16bit |
| Sample Rate (MSPS) |
15MSPS |
| Parametert |
With RespectTo |
Min |
Max |
Uni |
VIN, CAPT, CAPB
Digital Inputs
AVDD
DRVDD
AVSS
Digital Outputs
Junction Temperature
Storage Temperature
Lead Temperature
(10 sec) |
AVSS
AVSS
AVSS
DRVSS
DRVSS
DRVSS |
0.3
0.3
0.5
0.5
0.3
0.3
65 |
AVDD + 0.3
AVDD + 0.3
+6.5
+6.5
+0.3
DRVDD + 0.3
150
+150
300 |
V
V
V
V
V
V
|
DescriptionThe AD9826 is a complete analog signal processor for imaging applications. It features a 3-channel architecture designed to sample and condition the outputs of trilinear color CCD arrays.
Each channel consists of an input clamp, Correlated Double Sampler (CDS), offset DAC, and Programmable Gain Amplifier (PGA), multiplexed to a high-performance 16-bit A/D converter.
The AD9826 can operate at speeds greater than 15 MSPS with reduced performance. The CDS amplifiers may be disabled for use with sensors that do not require CDS, such as Contact Image Sensors (CIS), CMOS active pixel sensors, and Focal Plane Arrays.
The 16-bit digital output is multiplexed into an 8-bit output word, which is accessed using two read cycles. There is an optional single byte output mode. The internal registers are programmed through a 3-wire serial interface, and provide adjustment of the gain, offset, and operating mode.
The AD9826 operates from a single 5 V power supply, typically consumes 400 mW of power, and is packaged in a 28-lead SSOP.
AD9826 Data Sheet
