C/spi interface, Electrical characteristics (continued) – Rainbow Electronics MAX1386 User Manual
Page 4
MAX1385/MAX1386
Dual RF LDMOS Bias Controllers
with I
2
C/SPI Interface
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(GATEV
DD
= +5.5V for the MAX1385, GATEV
DD
= +11V for the MAX1386, AV
DD
= DV
DD
= +5V, external V
REFADC
= +2.5V, external V
REF-
DAC
= +2.5V, C
REF
= 0.1µF, unless otherwise noted. T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Channel-to-Channel Offset
Matching
±0.1
LSB
Channel-to-Channel Gain
Matching
±0.1
LSB
MONITOR ADC DYNAMIC ACCURACY (1kHz sine-wave input, 2.5V
P-P
, up to 94.4ksps)
Signal-to-Noise Plus Distortion
SINAD
70
dB
Total Harmonic Distortion
THD
Up to the 5th harmonic
-82
dB
Spurious-Free Dynamic Range
SFDR
86
dB
Intermodulation Distortion
IMD
f
IN1
= 0.99kHz, f
IN2
= 1.02kHz
76
dB
Full-Power Bandwidth
-3dB point
10
MHz
Full-Linear Bandwidth
S/(N + D) > 68dB
100
kHz
MONITOR ADC CONVERSION RATE
External reference
0.8
Power-Up Time
t
PU
Internal reference
70
µs
Conversion Time
t
CONV
Internally clocked
7.5
10
µs
MONITOR ADC ANALOG INPUT (ADCIN1, ADCIN2)
Input Range
V
ADCIN
Relative to AGND (Note 6)
0
V
REF
V
Input Leakage Current
V
IN
= 0V and V
IN
= AV
DD
±0.01
±1
µA
Input Capacitance
C
ADCIN
34
pF
TEMPERATURE MEASUREMENTS
MAX1385A/MAX1386A, T
A
= +25°C
±0.25
MAX1385A/MAX1386A, T
A
= T
MIN
to T
MAX
-1.0
±0.25
+1.0
MAX1385B/MAX1386B, T
A
= +25°C
±0.25
Internal Sensor Measurement
Error (Note 1)
MAX1385B/MAX1386B, T
A
= T
MIN
to T
MAX
-2.0
±0.35
+2.0
°C
T
A
= +25°C
±0.4
External Sensor Measurement
Error (Notes 1, 7)
T
A
= T
MIN
to T
MAX
-3
±0.75
+3
°C
Temperature Resolution
1/8
°C/LSB
External Diode Drive
2.8
85
µA
Drive Current Ratio
(Note 8)
16.5
INTERNAL REFERENCE
V
REFADC
T
A
= +25°C
2.494
2.500
2.506
REFADC/REFDAC Output Voltage
V
REFDAC
T
A
= +25°C
2.494
2.500
2.506
V
REFADC/REFDAC Output
Temperature Coefficient
TC
REFADC
,
TC
REFDAC
±14
ppm/°C
REFADC/REFDAC Output
Impedance
6.5
kΩ