MAX1464 Datasheet, PDF (5/47 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
LARGE OP AMP
Input Offset Voltage
Input Bias Current
SYMBOL
V_OS__LG
I_B__LG
CONDITIONS
MIN TYP MAX UNITS
0
±6
mV
±225
nA
DC Gain
A_VOL__LG
OUTnLG = 0.5V to 4.5V (n = 1 or 2),
R_LOAD = ∞
100
dB
Gain Bandwidth Product
Slew Rate
Common-Mode Input Range
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
Input-Referred Noise Voltage
GBW__LG
SR__LG
CMR__LG
CMRR__LG
PSRR__LG
V_N__LG
Output-Voltage High
V_OH__LG
Output-Voltage Low
V_OL__LG
Output Source Current
I_SRC__LG
Output Sink Current
Maximum Output Load
Capacitance
I_SNK__LG
C_L__LG
OP-AMP SWITCH
Analog Signal Range
V_SW
On-Resistance
R_ON
Off-Isolation
V_ISO
DIGITAL-TO-ANALOG CONVERTER
Resolution
RES_DAC
Integral Nonlinearity
INL_DAC
Differential Nonlinearity
DNL_DAC
A_{VOL_LG} = +1V/V
A_{VOL_LG} = +1V/V
V_{CM OPAMP} = V_SS to V_DD
At DC
0.1Hz to 1kHz
0.1Hz to 1MHz
R_LOAD = ∞
R_LOAD = 1kΩ to V_SS
R_LOAD = ∞
R_LOAD = 1kΩ to V_DD
V_OUTnLG = V_{OH_LG}, R_LOAD = 1kΩ to V_SS
V_OUTnLG = V_{OL_LG}, R_LOAD = 1kΩ to V_DD
R_LOAD = ∞, phase margin > 55°
Offset Error
V_{DAC OS} DAC ref = V_DD, DAC data = 0000h
Bit Weight
Power-Supply Rejection
Output Noise
Output Settling Time
PULSE-WIDTH MODULATOR
Resolution
Period
BW_DAC
PSR_DAC
ON_DAC
ST_DAC
DAC ref = 5VDC
At DC, DAC ref = V_REF
DAC buffer is the small op amp
To 0.1% of final value
RES_PWM (Note 6)
P_PWM f_CLK = 4.0MHz
4.0
3.2
V_SS + 0.02
V_DD - 0.02
70
70
19
160
V_DD - 0.1
V_DD - 0.125
0.03
0.13
-4.9
4.9
MHz
V/µs
V
dB
dB
µV_RMS
V
V
mA
mA
200
pF
V_SS
V_DD
V
5
kΩ
80
dB
V_DD / 2
- 0.06
16
3
±1
91.55
0.02
±3
250
V_DD / 2
+ 0.06
Bits
Bits
Bits
V
µV/LSB
%FS
LSB
µs
12
Bits
8.192
ms
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