Features: • 4-bit resolution• 1/4 LSB non-linearity• Sample-and-hold circuit not required• 25 Msps conversion rate• Selectable output format• 16-lead DIP and 20-lead PLCC packagesApplication• Digital communications• Video special effects• Radar...
TDC1044A: Features: • 4-bit resolution• 1/4 LSB non-linearity• Sample-and-hold circuit not required• 25 Msps conversion rate• Selectable output format• 16-lead DIP and 20-l...
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Type | Parameter | Min | Max | Unit |
Supply Voltages | VCC (measured to DGND) | -0.5 | 7.0 | V |
VEE (measured to AGND) | +0.5 | -7.0 | V | |
AGND (measured to DGND) | -0.5 | +0.5 | V | |
Input Voltages | CONV, NMINV, NLINV (measured to DGND) | -0.5 | +5.5 | V |
VIN, VRT, VRB (measured to AGND) | +0.5 | VEE | V | |
VRT (measured to VRB) | -2.2 | +2.2 | V | |
Output | Applied voltage (measured to DGND)2 | -0.5 | +5.5 | V |
Applied current, externally forced3,4 | -1.0 | +6.0 | mA | |
Short circuit duration (single output in high state to ground) | 1 | sec | ||
Temperature | Operating, ambient | -55 | +125 | |
Operating, junction | +150 | |||
Lead, soldering (10 seconds) | +300 | |||
Storage | -65 | +150 |
The TDC1044A is a 25 Msps (Megasample per second) fullparallel analog-to-digital converter, capable of converting an analog signal with full-power frequency components up to 12.5 MHz into 4-bit digital words. Use of a sample-and-hold circuit is not necessary for operation of the TDC1044A. All digital inputs and outputs are TTL compatible.
The TDC1044A consists of 15 latching comparators, encoding logic, and an output register. A single convert signal controls the conversion operation. Output formats are true/inverted binary or true/inverted offset two's complement codes.