Datasheet

(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)
MAX1464 Low-Power, Low-Noise Multichannel
Sensor Signal Processor
www.maximintegrated.com
Maxim Integrated │ 4
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Effective Offset Adjustment at the
ADC Input
OA
ADC
REF = V
DD
,
CO[3:0] = 1000
PGA[4:0] =
00000 to 01000
-15 -10 -4
% of
ADC
Ref
PGA[4:0] =
01010 to 10000
-29 -19 -10
PGA[4:0] =
10100 to 11110
-56 -38 -20
REF = V
DD
,
CO[3:0] = 1011
PGA[4:0] =
00000 to 01000
-79 -73 -66
PGA[4:0] =
01010 to 10000
-155 -145 -135
PGA[4:0] =
10100 to 11110
-317 -287 -257
REF = V
DD
,
CO[3:0] = 1111
PGA[4:0] =
00000 to 01000
-162 -156 -150
PGA[4:0] =
01010 to 10000
-327 -309 -293
PGA[4:0] =
10100 to 11110
-675 -614 -555
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
Input-Referred Noise Voltage V
N
_
SM
0.1Hz to 1kHz 8.5
µV
RMS
0.1Hz to 1MHz 100
Output High Voltage V
OH
_
SM
R
LOAD
= ∞ V
DD
- 0.1
V
R
LOAD
= 4.7kΩ to V
SS
V
DD
- 0.15
Output Low Voltage V
OL
_
SM
R
LOAD
= ∞ 0.1
V
R
LOAD
= 4.7kΩ to V
DD
0.15
Output Source Current I
SRC
_
SM
V
OUTnSM
= V
OH_SM
, R
LOAD
= 4.7kΩ to V
SS
-1.04 mA
Output Sink Current I
SNK
_
SM
V
OUTnSM
= V
OL_SM
, R
LOAD
= 4.7kΩ to V
DD
1.04 mA
Maximum Output Load
Capacitance
C
L
_
SM
R
LOAD
= ∞, phase margin > 55° 120 pF
Electrical Characteristics (continued)