Datasheet

ADC12EU050
SNAS444I –JANUARY 2008–REVISED APRIL 2013 www.ti.com
AC AND TIMING CHARACTERISTICS
Unless otherwise specified, the following conditions apply: V
A
= V
D
= 1.2V; V
DR
= 1.2V; V
REF
= internal; R
REF
= 10kohm ±1%;
C
L
= 5pF; 100Ω terminated at the receiver; f
CLK
= 45MHz; f
S
= 45MSPS. Boldface limits apply for T
A
= T
MIN
to T
MAX
; All other
limits apply for T
A
= +25°C.
Symbol Parameter Conditions Typical
(1)
Limits Units
General ADC Output Timing Parameters
44.5 MSPS (min)
f
s
Sample Rate
45.5 MSPS (max)
Conversion Latency 19 Samples
t
BCLK
Bit clock period f
CLK
= 45MHz 3.7 ns
t
WCLK
Word clock period f
CLK
= 45MHz 22.2 ns
t
S
Outputs Data Edge to Output Clock f
CLK
= 45MHz 800 325 ps (min)
Edge Setup Time
t
H
Output Data Edge to Output Clock f
CLK
= 45MHz 850 470 ps (min)
Edge Hold Time
t
DV
Output Data Valid Window f
CLK
= 45MHz
(2)
1380 885 ps (min)
t
R
, t
F
Output Rise/Fall time f
CLK
= 45MHz 320 ps (min)
t
DFS
Data Edge to Word Edge Skew f
CLK
= 45MHz -295 -720 ps (min)
220 ps (max)
LVDS Output Parameters, OCM = 0 (V
DR
= 1.2V)
LVDS mode, I_drive[1:0] = 00 (2.5mA), R
L
270 mV
= 100Ω
LVDS mode, I_drive[1:0] = 01 (3.5mA), R
L
370 318 mV (min)
V
OD
Differential Output Voltage
= 100Ω
428 mV (max)
LVDS mode, I_drive[1:0] = 11 (5.0mA), R
L
520 mV
= 100Ω
LVDS mode, OCM = 0 (for V
DR
= 1.2V) 945 895 mV (min)
V
OCM
Output Common Mode Voltage
1000 mV (max)
LVDS Output Parameters, OCM = 1 (V
DR
= 1.8V)
LVDS mode, I_drive[1:0] = 00 (2.5mA), R
L
265 mV
= 100Ω
LVDS mode, I_drive[1:0] = 01 (3.5mA), R
L
350 280 mV (min)
V
OD
Differential Output Voltage
= 100Ω
417 mV (max)
LVDS mode, I_drive[1:0] = 11 (5.0mA), R
L
485 mV
= 100Ω
V
OCM
Output Common Mode Voltage LVDS mode, OCM = 1 1265 1200 mV (min)
1340 mv (max)
SLVS Output Parameters
SLVS mode, I_drive[1:0] = 00 (2.5mA), R
L
245 mV
= 100Ω
SLVS mode, I_drive[1:0] = 01 (3.5mA), R
L
330 262 mV (min)
V
OD
Differential Output Voltage
= 100Ω
393 mV (max)
SLVS mode, I_drive[1:0] = 11 (5.0mA), R
L
475 mV
= 100Ω
185 mV (min)
V
OCM
Output Common Mode Voltage SLVS mode 225
270 mV (max)
(1) Typical figures are at TA = 25°C, and represent most likely parametric norms at the time of product characterization. The typical
specifications are not ensured.
(2) This parameter is specified by design and/or characterization and is not tested in production.
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