Features: Monolithic 10-Bit, 20 MSPS A/D Converter Low Power Dissipation: 1.0 W Signal-to-Noise Plus Distortion Ratio fIN = 1 MHz: 56 dB fIN = 10 MHz: 54 dB Guaranteed No Missing Codes On-Chip Track-and-Hold Amplifier 100 MHz Full Power Bandwidth High Impedance Reference Input Out of Range Output Twos Complement and Binary Output Data Available in Commercial and Military Temperature Ranges (See Military/Aerospace Reference Manual for Specifications)
Pinout
Specifications
| Parameter |
With Respect to |
Min |
Max |
Units |
| AVDD |
AGND |
0.5 |
+6.5 |
V |
| AVSS |
AGND |
6.5 |
+0.5 |
V |
| VINA, VINB |
AGND |
6.5 |
+6.5 |
V |
| DVDD, DRVDD |
DGND, DRGND |
0.5 |
+6.5 |
V |
| AGND |
DGND, DRGND |
1.0 |
+1.0 |
V |
| AVDD |
DVDD, DRVDD |
6.5 |
+0.5 |
V |
| CLK |
DVDD, DRVDD |
6.5 |
+0.5 |
V |
| REFIN |
REFGND, AGND |
0.5 |
+6.5 |
V |
| Junction Temperature |
|
|
+150 |
|
| Storage Temperature |
|
65 |
+150 |
|
Lead Temperature
(10 sec) |
|
|
+300 |
|
DescriptionThe AD773A is a monolithic 10-bit, 20 Msps analog-to-digital converter incorporating an on-board, high performance trackand- hold amplifier (THA). The AD773A converts video bandwidth signals without the use of an external THA. The AD773A implements a multistage differential pipelined architecture with output error correction logic. The AD773A offers accurate performance and guarantees no missing codes over the full operating temperature range.
Output data is presented in binary and twos complement format. An out of range (OTR) signal indicates the analog input voltage is beyond the specified input range. OTR can be decoded with the MSB/MSB pins to signal an underflow or overflow condition. The high impedance reference input allows multiple AD773As to be driven in parallel from a single
reference.
The combined dc precision and dynamic performance of the AD773A is useful in a variety of applications. Typical applications include: video enhancement, HDTV, ghost cancellation, ultrasound imaging, radar and high speed data acquisition.
The AD773A was designed using Analog Devices' ABCMOS-1 process which utilizes high speed bipolar and 2-micron CMOS transistors on a single chip. High speed, precision analog circuits are now combined with high density logic circuits. Laser trimmed thin film resistors are used to optimize accuracy and temperature stability.
The AD773A is packaged in a 28-pin ceramic DIP and is available in commercial (0 to +70) and military (55to +125) grades.
AD773A Data Sheet
