Rainbow Electronics ADC1173 - Manual (Page 6)

Converter Electrical Characteristics
(Continued)
The following specifications apply for AV
DD
= DV
DD
= +3.0V
DC
, OE = 0V, V
RT
= +2.0V, V
RB
= 0V, C
L
= 20 pF, f
CLK
= 15MHz
at 50% duty cycle. Boldface limits apply for T
A
= T
MIN
to T
MAX
; all other limits T
A
= 25˚C (Notes 7, 8)
Symbol Parameter Conditions
Typical
(Note 9)
Limits Units
V
RTS
-
V
RBS
Self Bias Voltage Delta
V
RT
connected to V
RTS
,
V
RB
connected to V
RBS
1.2
1.1
1.3
µAmin
µAmax
V
RT
connected to V
RTS
,
V
RB
connected to V
SS
1.38 V
V
RT
- V
RB
Reference Voltage Delta 2
1.0 V(min)
V
A
V(max)
Power Supply Characteristics
IA
DD
Analog Supply Current DV
DD
= AV
DD
= 3.6V 6.8 mA
ID
DD
Digital Supply Current DV
DD
= AV
DD
= 3.6V 2.3 mA
IAV
DD
+
IDV
DD
Total Operating Current
DV
DD
AV
DD
= 3.6V, 9.1 11.4 mA
DV
DD
= AV
DD
= 3.6V, CLK Low
(Note 10)
5.8 mA
Power Consumption DV
DD
= AV
DD
= 3.6V 33 41 mW
CLK, OE Digital Input Characteristics
V
IH
Logical High Input Voltage DV
DD
= AV
DD
= 3.6V 2.2 V (min)
V
IL
Logical Low Input Voltage DV
DD
= AV
DD
= 3.6V 0.8 V (max)
I
IH
Logical High Input Current V
IH
= DV
DD
= AV
DD
= 3.6V 5 µA
I
IL
Logic Low Input Current V
IL
= 0V, DV
DD
= AV
DD
= 3.6V −5 µA
C
IN
Logic Input Capacitance 5 pF
Digital Output Characteristics
V
OH
High Level Output Voltage
DV
DD
= 2.7V, I
OH
= −360µA 2.4 V(min)
DV
DD
= 2.7V, I
OH
= −1.1mA 2.1 1.9 V(min)
V
OL
Low Level Output Voltage DV
DD
= 2.7V, I
OL
= 1.6mA 0.32 0.6 V(max)
I
OZH
,
I
OZL
TRI-STATE ® Leakage Current
DV
DD
= 3.6V, OE = DV
DD
,
V
OL
= 0V or V
OH
= DV
DD
± 20 µA
AC Electrical Characteristics
f
C1
Maximum Conversion Rate 20 15 MHz(min)
f
C2
Minimum Conversion Rate 1 MHz
t
OD
−0 Output Delay CLK high to low data valid 28 ns(max)
t
OD
−1 Output Delay CLK low to high data valid 24 ns(max)
Pipeline Delay (Latency) 2.5
Clock
Cycles
t
DS
Sampling (Aperture) Delay CLK low to acquisition of data 3 ns
t
AJ
Aperture Jitter 30 ps rms
t
OH
Output Hold Time CLK high to data invalid 15 ns
t
EN
OE Low to Data Valid Loaded as in Figure 2 22 ns
t
DIS
OE High to High Z State Loaded as in Figure 2 12 ns
ENOB Effective Number of Bits
f
IN
= 1.31 MHz
f
IN
= 3.58 MHz
f
IN
= 7.5 MHz
7.7
7.6
7.4
7.0 Bits (min)
SINAD Signal-to- Noise & Distortion
f
IN
= 1.31 MHz
f
IN
= 3.58 MHz
f
IN
= 7.5 MHz
49
47.7
46.5
43 dB(min)
SNR Signal-to-Noise Ratio
f
IN
= 1.31 MHz
f
IN
= 3.58 MHz
f
IN
= 7.5 MHz
49
48.7
48.0
44 dB(min)
ADC1
173
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