TDA4881 Datasheet, PDF (10/12 Pages) NXP Semiconductors – Advanced monitor video controller

Philips Semiconductors
Advanced monitor video controller
Preliminary specification
TDA4881
Notes to the characteristics
1. Typical range is 1 to 6 V, the range can be increased (e.g. 0 to 7 V) to slightly increase the control range.
2. Open contrast control pin leads to undefined contrast setting.
3. The internal reference voltage can be measured at pins 18, 15 and 12 during output clamping in closed feedback
loop.
4. Minimum guaranteed control range, the typical minimum black level voltage is 0.1 V.
5. The signal-to-noise ratio is calculated by the formula (frequency range 1 to 70 MHz):
p----e---a---k------t--o------p-R---e-M--a---kS-----v-v--a-a--l-l-u-u--e-e----o-o--f-f--t--th-h--e--e---n-n---o-o--m-i-s---ie-n----ao---l-u--s-t--pi-g--u-n--t--a--v-l--o-o--l-tu--a--t-gp---e-u---t---v---o----l-t-a----g---e---
6. The external RC combinations at pins 19, 16 and 13 enables peak currents during transients.
7. The internal threshold voltages are derived from an internally stabilized voltage. The internal pulses are generated if
the input pulses are higher than the thresholds.
November 1992
Fig.4 Timing of pulses at pin 10.
10