AD10678_15 Datasheet, PDF (7/20 Pages) Analog Devices – 16-Bit, 80 MSPS A/D Converter

Preliminary Technical Data
TEST CIRCUITS
t_A
N
N+1
N+2
N+3
N+4
N+5
N+6
AD10678
ANALOG INPUT
ENCODE, ENCODE
t_ENC
N
DATA BITS, D[15:0]
DATA-READY
OUTPUT
N
t_ENCL
t_ENCH
N+1
N–10
N+2
t_PDH
N–9
N+3
t_PDL
N–8
t_{S_DR} t_{H_DR}
N+1
N+2
N+3
N+4
N–7
t_{DR_R}
N+4
Figure 2. Timing Diagram
V_CH AV_CC
N+5
N+6
N–6
t_{DR_F}
N+5
N–5
N+6
1:1
AIN
200Ω
AIN
25Ω
500Ω
25Ω
×4
500Ω
V_CL
V_CH AV_CC
500Ω
BUF
T/H
BUF
V_REF
BUF
T/H
V_CL
Figure 3. Analog Input Stage
ENC
100Ω
ENC
EV_CC
37.5kΩ
PECL
DRIVER
Figure 4. Equivalent Encode Input
V_DD
MACROCELL
LOGIC
V_DD
P
120Ω
N
D₀–D₁₅
Figure 5. Digital Output Stage
V_DD
MACROCELL
LOGIC
V_DD
P
DRY
N
1kΩ
Figure 6. Data-Ready Output
Rev. C | Page 7 of 20