AMD Geode™ LX Processors Data Book 613
Electrical Specifications 33234H
Table 7-14. CRT Display Analog (DAC) Characteristics
Symbol Parameter Min Typ Max Units Comments (Note 1)
VOS Output Voltage Saturation Limit 1.25 V
IOVAR Output Current 18.67 mA Achieves 700 mV on 37.5Ω
INL Integral Linearity Error +/-1 LSB
DNL Differential Linearity Error +/-1 LSB
tFS Full Scale Settling Time 2.5 ns Note 2
-- DAC-to-DAC matching 1 4 %
-- Analog Power Supply Rejection 45 dB @ 1 KHz
tRISE Output Rise Time 0.5 1.25 ns Note 3 and Note 4
tFALL Output Fall Time 0.5 1.25 ns Note 3 and Note 4
Note 1. All tests, unless otherwise specified, are at VIO = 3.14V to 3.46V, TC = 0°C to 85°C (or -40°C to 85°C if
LX 800@0.9w industrial temperature range part), and CL = 50 pF.
Note 2. Full-scale transition time is measured from 50% of full-scale transition until output remaining within 1LSB of target.
Note 3. Timing measurements are made with a 75 Ω doubly-terminated load, with VEXTREF = 1.235V and RSET = 1.2 KΩ.
Note 4. 10% to 90% of full-scale transition.