Datasheet

MAX1191
Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 3.0V, OV
DD
= 1.8V, V
REFIN
= V
DD
(internal reference), C
L
≈ 10pF at digital outputs, f
CLK
= 7.5MHz, C
REFP
= C
REFN
= C
COM
= 0.33µF, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
f
IN
= 1.875MHz 59 69
Spurious-Free Dynamic Range
(Note 2)
SFDR
f
IN
= 3.75MHz 68.7
dBc
f
IN
= 1.875MHz 72.0
Thi r d - H ar m oni c D i stor ti on
( N ote 2)
HD3
f
IN
= 3.75MHz -70.0
dBc
Intermodulation Distortion IMD
f
IN1
= 1MHz at -7dB FS, f
IN2
= 1.01MHz
at -7dB FS
-66 dBc
Third-Order Intermodulation IM3
f
IN1
= 1MHz at -7dB FS, f
IN2
= 1.01MHz
at -7dB FS
-70 dBc
f
IN
= 1.875MHz -68.0 -57.0
Total Harmonic Distortion
(Note 2)
THD
f
IN
= 3.75MHz -67.0
dBc
Small-Signal Bandwidth SSBW Input at -20dB FS 440 MHz
Full-Power Bandwidth FPBW Input at -0.5dB FS 440 MHz
Aperture Delay t
AD
1.5 ns
Aperture Jitter t
AJ
1dB SNR degradation at Nyquist 2 ps
RMS
Overdrive Recovery Time 1.5 × full-scale input 2 ns
INTERNAL REFERENCE (REFIN = V
DD
; V
REFP
, V
REFN
, and V
COM
are generated internally)
REFP Output Voltage V
REFP
- V
COM
0.256 V
REFN Output Voltage V
REFN
- V
COM
-0.256 V
COM Output Voltage V
COM
V
DD
/ 2
- 0.15
V
DD
/ 2
V
DD
/ 2
+ 0.15
V
Differential Reference Output V
REF
V
REFP
- V
REFN
0.512 V
Differential Reference Output
Temperature Coefficient
V
REFTC
±30 ppm/°C
Maximum REFP/REFN/COM
Source Current
I
SOURCE
2mA
Maximum REFP/REFN/COM Sink
Current
I
SINK
2mA
BUFFERED EXTERNAL REFERENCE (V
REFIN
= 1.024V, V
REFP
, V
REFN
, and V
COM
are generated internally)
REFIN Input Voltage V
REFIN
1.024 V
COM Output Voltage V
COM
V
DD
/ 2
- 0.15
V
DD
/ 2
V
DD
/ 2
+ 0.15
V
Differential Reference Output V
REF
V
REFP
- V
REFN
0.512 V
Maximum REFP/REFN/COM
Source Current
I
SOURCE
2mA