MAX1464 Datasheet, PDF (3/47 Pages) Maxim Integrated Products – Low-Power, Low-Noise Multichannel Sensor Signal Processor

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