Datasheet

MAX1276/MAX1278
TWO-TONE IMD PLOT (MAX1276)
MAX1276/78 toc16
ANALOG INPUT FREQUENCY (kHz)
AMPLITUDE (dB)
800600400200
-120
-100
-80
-60
-40
-20
0
-140
0 1000
f
SAMPLE
= 2Msps
f
IN1
= 250.039kHz
f
IN2
= 300.059kHz
IMD = -84.2dB
f
IN1
f
IN2
TWO-TONE IMD PLOT (MAX1278)
MAX1276/78 toc17
ANALOG INPUT FREQUENCY (kHz)
AMPLITUDE (dB)
800600400200
-120
-100
-80
-60
-40
-20
0
-140
0 1000
f
SAMPLE
= 2Msps
f
IN1
= 250.039kHz
f
IN2
= 300.059kHz
IMD = -81.8dB
f
IN1
f
IN2
V
DD
/V
L
FULL POWER-DOWN SUPPLY
CURRENT vs. TEMPERATURE
MAX1276/78 toc18
TEMPERATURE (°C)
V
DD
/V
L
SUPPLY CURRENT (μA)
603510-15
0.2
0.4
0.6
0.8
1.0
0
-40 85
V
DD
, f
SCLK
= 28.8MHz
V
DD
, NO SCLK
V
L
, NO SCLK
1.8Msps, Single-Supply, Low-Power, True-
Differential, 12-Bit ADCs with Internal Reference
_______________________________________________________________________________________ 7
V
L
PARTIAL/FULL POWER-DOWN SUPPLY
CURRENT vs. TEMPERATURE
MAX1276/78 toc19
TEMPERATURE (°C)
V
L
SUPPLY CURRENT (μA)
603510-15
50
100
150
200
0
-40 85
V
L
= 5V, f
SCLK
= 28.8MHz
V
L
= 3V, f
SCLK
= 28.8MHz
V
DD
SUPPLY CURRENT
vs. TEMPERATURE
MAX1276/78 toc20
TEMPERATURE (°C)
V
DD
SUPPLY CURRENT (mA)
603510-15
3
6
9
12
0
-40 85
CONVERSION, f
SCLK
= 28.8MHz
PARTIAL POWER-DOWN
V
DD
SUPPLY CURRENT
vs. CONVERSION RATE
MAX1276/78 toc21
f
SAMPLE
(kHz)
V
DD
SUPPLY CURRENT (mA)
15001000500
3
6
9
12
0
0 2000
Typical Operating Characteristics (continued)
(V
DD
= +5V, V
L
= V
DD
, f
SCLK
= 28.8MHz, f
SAMPLE
= 1.8Msps, T
A
= -40°C to +85°C unless otherwise noted. Typical values are
meas- ured at T
A
= +25°C.)