Delta 45 Specifications Page 9

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ADC12EU050
www.ti.com
SNAS444I JANUARY 2008REVISED APRIL 2013
EXTERNAL INPUT CLOCK AND PLL CHARACTERISTICS (continued)
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; 100 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
Low Bandwidth 400 kHz
BW
loop
PLL Loop filter bandwidth
High Bandwidth 1.4 MHz
t
J
RMS Clock Jitter on Bit Clock output 2 ps peak
DIGITAL INPUT AND OUTPUT 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; 100 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
Digital Inputs (S
DATA
, S
SEL
, S
CLK
, SLEEP, RST)
V
IH
Logical input “1” voltage Test run at 2MHz 900 mV (min)
V
IL
Logical input “0” voltage Test run at 2MHz 300 mV (max)
I
IN1
Logical "1" Input current 1 µA (max)
I
IN0
Logical "0" Input current -1 µA (min)
C
IN
Input Capacitance Specified by design 5 pF
Digital Outputs (S
DATA
)
V
OH
Logical output “1” voltage Test run at 2MHz, V
DR
= 1.2V V
DR
850 mV (min)
V
OL
Logical output “0” voltage Test run at 2MHz, V
DR
= 1.2V DRGND 250 mV (max)
I
OH
Logical "1" Output Current -0.75 mA (min)
I
OL
Logical "0" Output Current 1 mA (max)
Output Drive Capability (S
DATA
)
R = 4.7 kohm, V
DR
> 1.8V 50 pF
C
LOAD
Load capacitance
R = 4.7 kohm, V
DR
= 1.2V 50 pF
Open Drain Mode
Maximum allowed external voltage on
V
EXT
Open Drain mode activated 2.5 V
S
DATA
Recommended S
DATA
external pull-up
R
SDATA
Open Drain mode activated 4.7 k
resistor
(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.
Copyright © 2008–2013, Texas Instruments Incorporated Submit Documentation Feedback 9
Product Folder Links: ADC12EU050
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