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 │ 3
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Single-Sided Input Impedance
(INP1 to V
SS
, INM1 to V
SS
,
INP2 to V
SS
, INM2 to V
SS
)
R
SIN
PGA[4:0] = 00000, CLK[2:0] = 000 430
kΩPGA[4:0] = 01010
,
CLK[2:0] = 000 55
PGA[4:0] = 11111, CLK[2:0] = 000 36
PGA[4:0] = 00000, CLK[2:0] = 011 3.4 MΩ
PGA[4:0] = 01010, CLK[2:0] = 011 440
kΩ
PGA[4:0] = 11111, CLK[2:0] = 011 288
PGA[4:0] = 00000, CLK[2:0] = 110 27
MΩPGA[4:0] = 01010, CLK[2:0] = 110 3.5
PGA[4:0] = 11111, CLK[2:0] = 110 2.3
Common-Mode Rejection Ratio CMRR Common-mode voltage V
CM
= V
SS
to V
DD
0.008 %FS
Differential Signal-Gain Range Selectable in 17 steps (Note 5) 0.99 to 244 V/V
Differential Signal Gain A
VDIFF
PGA[4:0] = 00000 0.95 0.99 1.05
V/V
PGA[4:0] = 00001 7.3 7.7 8.2
PGA[4:0] = 01010 71 77 82
PGA[4:0] = 10100 137 153 168
PGA[4:0] = 11110 203 244 283
Gain-Error Temperature
Coefcient
GETC
ADC
PGA[4:0] = 00000 -8 ppm/°C
COARSE-OFFSET DAC
Resolution 3-bit plus sign 4 Bits
Effective Offset Adjustment at the
ADC Input
OA
ADC
REF = V
DD
,
CO[3:0] = 0111
PGA[4:0] =
00000 to 01000
137 147 157
% of
ADC
Ref
PGA[4:0] =
01010 to 10000
273 291 308
PGA[4:0] =
10100 to 11110
525 578 630
REF = V
DD
,
CO[3:0] = 0011
PGA[4:0] =
00000 to 01000
57 64 69
PGA[4:0] =
01010 to 10000
113 126 136
PGA[4:0] =
10100 to 11110
228 251 276
REF = V
DD
,
CO[3:0] = 0000
PGA[4:0] =
00000 to 01000
-3 -1 +1
PGA[4:0] =
01010 to 10000
-7 -2.4 +2
PGA[4:0] =
10100 to 11110
-11 -4 +3
Electrical Characteristics (continued)