Rainbow Electronics ADC1175-50 - Manual (Page 6)

Converter Electrical Characteristics
(Continued)
The following specifications apply for AV
DD
= DV
DD
= +5.0 V
DC
, PD = 0V, V
RT
= +2.6V, V
RB
= 0.6V, C
L
= 20 pF, f
CLK
=
50 MHz 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
(Note 9)
Units
(Limits)
ANALOG INPUT AND REFERENCE CHARACTERISTICS
V
RTS
–V
RBS
Self Bias Voltage Delta
V
RT
Connected to V
RTS
, V
RB
Connected to V
RBS
2
1.89
2.20 (V (min)
V (max)
V
RT
Connected to V
RTS
, V
RB
Connected to AV
SS
2.3 V
V
RT
–V
RB
Reference Voltage Differential 2
1.0
2.8 V (min)
V (max)
CONVERTER DYNAMIC CHARACTERISTICS
ENOB Effective Number of Bits
f
IN
= 4.4 MHz, f
CLK
= 40 MHz 7.2 6.7 Bits (min)
f
IN
= 19.9 MHz, f
CLK
= 40 MHz 7.0 6.4 Bits (min)
f
IN
= 1.3 MHz, f
CLK
= 50 MHz 7.3 Bits
f
IN
= 4.4 MHz, f
CLK
= 50 MHz 7.2 Bits
f
IN
= 24.9 MHz, f
CLK
= 50 MHz 6.8 6.1 Bits (min)
SINAD Signal-to-Noise & Distortion
f
IN
= 4.4 MHz, f
CLK
= 40 MHz 45 42 dB (min)
f
IN
= 19.9 MHz, f
CLK
= 40 MHz 44 40 dB (min)
f
IN
= 1.3 MHz, f
CLK
= 50 MHz 46 dB
f
IN
= 4.4 MHz, f
CLK
= 50 MHz 45 dB
f
IN
= 24.9 MHz, f
CLK
= 50 MHz 43 38.4 dB (min)
SNR Signal-to-Noise Ratio
f
IN
= 4.4 MHz, f
CLK
= 40 MHz 46 42.5 dB (min)
f
IN
= 19.9 MHz, f
CLK
= 40 MHz 44 41 dB (min)
f
IN
= 1.3 MHz, f
CLK
= 50 MHz 48 dB
f
IN
= 4.4 MHz, f
CLK
= 50 MHz 45 dB
f
IN
= 24.9 MHz, f
CLK
= 50 MHz 44 40 dB (min)
SFDR Spurious Free Dynamic Range
f
IN
= 1.3 MHz 57 dB
f
IN
= 4.4 MHz 56 dB
f
IN
= 24.9 MHz 51 dB
THD Total Harmonic Distortion
f
IN
= 1.3 MHz −55 dB
f
IN
= 4.4 MHz −54 dB
f
IN
= 24.9 MHz −51 dB
POWER SUPPLY CHARACTERISTICS
IA
DD
Analog Supply Current DV
DD
= AV
DD
= 5.25V 13 mA
ID
DD
Digital Supply Current DV
DD
= AV
DD
= 5.25V 11 mA
IA
DD
+
ID
DD
Total Operating Current
DV
DD
= AV
DD
= 5.25V,
f
CLK
= 50 MHz
25 36 mA (max)
DV
DD
= AV
DD
= 5.25V,
CLK Inactive (low)
14 mA
Power Consumption PD pin low 125 190 mW (max)
Power Consumption PD pin high < 5 mW mW
CLK, PD DIGITAL INPUT CHARACTERISTICS
V
IH
Logical High Input Voltage 2.0 V (min)
V
IL
Logical Low Input Voltage 0.8 V (max)
I
IH
Logical High Input Current V
IH
= DV
DD
= AV
DD
= +5.25V ± 5 µA (max)
I
IL
Logical Low Input Current V
IL
= 0V, DV
DD
= AV
DD
= +5.25V ± 5 µA (max)
C
IN
Digital Input Capacitance 4 pF
DIGITAL OUTPUT CHARACTERISTICS
I
OH
Output Current, Logic HIGH DV
DD
= 4.75V, V
OH
= 4.0V −1.1 mA (min)
I
OL
Output Current, Logic LOW DV
DD
= 4.75V, V
OL
= 0.4V 1.8 mA (min)
ADC1
175-50
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