Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
ABSOLUTE MAXIMUM RATINGS
V
, OV
to GND ...............................................-0.3V to +3.6V
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
DD
DD
OGND to GND.......................................................-0.3V to +0.3V
INA+, INA-, INB+, INB- to GND .................-0.3V to (V
CLK, REFIN, REFP, REFN, COM to GND...-0.3V to (V
PD0, PD1 to OGND .................................-0.3V to (OV
Digital Outputs to OGND.........................-0.3V to (OV
+ 0.3V)
+ 0.3V)
+ 0.3V)
+ 0.3V)
DD
DD
DD
DD
Continuous Power Dissipation (T = +70°C)
A
28-Pin Thin QFN (derated 20.8mW/°C above +70°C)...1667mW
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
= 3.0V, OV
= 1.8V, V
= V
(internal reference), C ≈ 10pF at digital outputs, f
= 7.5MHz, C
= C = C
REFN COM
DD
DD
REFIN
DD
L
CLK
REFP
= 0.33µF, T = -40°C to +85°C, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
A
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DC ACCURACY
Resolution
8
Bits
LSB
LSB
Integral Nonlinearity
Differential Nonlinearity
INL
0.15
0.13
1.00
1.00
4
DNL
No missing codes over temperature
≥+25°C
Offset Error
%FS
<+25°C
6
Gain Error
Excludes REFP - REFN error
2
%FS
dB
DC Gain Matching
Gain Temperature Coefficient
0.01
30
0.2
ppm/°C
Offset (V
5%)
5%)
0.2
DD
Power-Supply Rejection
LSB
Gain (V
0.05
DD
ANALOG INPUT
Differential Input Voltage Range
V
Differential or single-ended inputs
Switched capacitor load
0.512
/ 2
V
V
DIFF
Common-Mode Input Voltage
Range
V
V
COM
DD
Input Resistance
R
C
720
5
kΩ
IN
Input Capacitance
pF
IN
CONVERSION RATE
Maximum Clock Frequency
f
7.5
MHz
CLK
Channel A
Channel B
5.0
5.5
Clock
cycles
Data Latency
DYNAMIC CHARACTERISTICS (differential inputs, 4096 point FFT)
f
IN
f
IN
f
IN
f
IN
= 1.875MHz
= 3.75MHz
= 1.875MHz
= 3.75
47
47
48.7
48.6
48.6
48.5
Signal-to-Noise Ratio
(Note 2)
SNR
dB
dB
Signal-to-Noise and Distortion
(Note 2)
SINAD
2
_______________________________________________________________________________________
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