Rainbow Electronics MAX1464 - Manual (Page 4)

MAX1464
Low-Power, Low-Noise Multichannel
Sensor Signal Processor
4 _______________________________________________________________________________________
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
PGA[4:0] =
00000 to 01000
-15 -10 -4
PGA[4:0] =
01010 to 10000
-29 -19 -10
REF = V DD ,
CO[3:0] = 1000
PGA[4:0] =
10100 to 11110
-56 -38 -20
PGA[4:0] =
00000 to 01000
-79 -73 -66
PGA[4:0] =
01010 to 10000
-155 -145 -135
REF = V DD ,
CO[3:0] = 1011
PGA[4:0] =
10100 to 11110
-317 -287 -257
PGA[4:0] =
00000 to 01000
-162 -156 -150
PGA[4:0] =
01010 to 10000
-327 -309 -293
Effective Offset Adjustment at the
ADC Input
OA ADC
REF = V DD ,
CO[3:0] = 1111
PGA[4:0] =
10100 to 11110
-675 -614 -555
% of
ADC
Ref
SMALL OP AMP
Input Offset Voltage V OS _ SM 0 ±15 mV
Input Bias Current I B _ SM ±1 nA
DC Gain A VOL _ SM
OUTnSM = 0.5V to 4.5V (n = 1 or 2),
R
LOAD = ∞
100 dB
Gain Bandwidth Product GBW_ SM A VOL_SM = +1V/V 2.7 MHz
Slew Rate SR_ SM A VOL_SM = +1V/V 2.2 V/µs
Common-Mode Input Range CMR_ SM V SS + 0.02 V DD - 0.02 V
Common-Mode Rejection Ratio CMRR_ SM V CM_OPAMP = V SS to V DD 70 dB
Power-Supply Rejection Ratio PSRR_ SM At DC 70 dB
0.1Hz to 1kHz 8.5
Input-Referred Noise Voltage V N _ SM
0.1Hz to 1MHz 100
µV RMS
R LOAD = ∞ V DD - 0.1
Output High Voltage V
OH
_
SM
R LOAD = 4.7k Ω to V
SS V DD - 0.15
V
R LOAD = ∞ 0.1
Output Low Voltage V OL _ SM
R LOAD = 4.7k Ω to V
DD 0.15
V
Output Source Current I SRC _ SM V OUTnSM = V OH_SM , R LOAD = 4.7k Ω to V
SS -1.04 mA
Output Sink Current I SNK _ SM V OUTnSM = V OL_SM , R LOAD = 4.7k Ω to V
DD 1.04 mA
Maximum Output Load
Capacitance
C L _ SM R LOAD = ∞, phase margin > 55° 120 pF
ELECTRICAL CHARACTERISTICS (continued)
(V DDF = V DD = 4.5V to 5.5V, V SSF = V SS = 0V, f CLK = 4.0MHz, T A = T MIN to T MAX . Typical values are at V DDF = V DD = 5.0V, V SSF = V SS = 0V,
T A = +25°C, unless otherwise noted.) (Note 1)