AK2048D Datasheet, PDF (7/16 Pages) Asahi Kasei Microsystems – 2M CMI Transceiver

ASAHI KASEI
[AK2048]
TRANSMITTER
Parameter
Symbol min typ max Unit
Comments
Va 2.55 3.3 3.90
Refer to Fig.1, 2
Output signal level
VpeakH
4.05 Vp-p
VpeakL 2.55
Rise/Fall Time
Tr, Tf
20
50
ns
Pulse duty of transmit output
43
50
57
%
Delay time from TDATA to TXA,TXB
Ttd
1
Bit
*1) The duty cycle of TCLK 50%±4%.
*2) Duty cycle = Tpwh / (Tpwh + Tpwl) × 100%
*3) Signal output delay = (1bit logical delay) + (internal propagation delay)
Refer to Fig.1, 2
*1), *2)
Refer to Fig.3
*3)Refer to Fig.4
TXA
56 Ω
TXB
56 Ω
110 Ω
Transmit output amplitude
is specified at this point.
(Va, VpeakH, VpeakL)
Fig.1 Measurement circuit
VpeakH
Va VpeakL
0.8Va
MS0073-E-00
Tr,Tf
Fig.2 Rise and fall times
7
2001/01