MAX11358B Datasheet, PDF (26/70 Pages) Maxim Integrated Products – 16-Bit Data-Acquisition System with ADC, DAC, UPIOs, RTC, Voltage Monitors, and Temp Sensor

16-Bit Data-Acquisition System with ADC, DAC,
UPIOs, RTC, Voltage Monitors, and Temp Sensor
Detailed Description
The MAX11358B DAS features a multiplexed differential
16-bit ADC, 10-bit force-sense DACs, an RTC with an
alarm, a selectable bandgap voltage reference, a signal-
detect comparator, 1.8V and 2.7V voltage monitors, and
wake-up control circuitry, all controlled by a 4-wire serial
interface (see Figure 3 for the functional diagram).
The DAS directly interfaces to various sensor outputs
and, once configured, provides the stimulus, signal con-
ditioning, and data conversion, as well as µP support.
See the Applications section for sample MAX11358B
applications.
The 16-bit ADC features programmable continuous con-
version rates as shown in Table 4, and gains of 1, 2, 4,
and 8 (Table 5) to suit applications with different power
DV_DD
32KIN 32KOUT
CLK32K
CLK
INT
AV_DD
CS
SCLK
DIN
DOUT
AIN1
AIN2
SNO1
SNC1
SCM1
SNO2
SNC2
SCM2
SERIAL
INTERFACE
PROG
CURRENT
SOURCE
32.768kHz
OSCILLATOR
CONTROL
LOGIC
AIN1
AIN2
CLK32K M32K 4.9152MHz HF
INPUT/OUTPUT
OSCILLATOR
CONTROL
AND FLL
HFCLK
32K
PWM
RTC AND
ALARM
WATCHDOG
TIMER
WDTO
TEMP
SENSOR
TEMP+
TEMP-
MAX11358B
SPDT1
SPDT2
AIN1
SNO1
FBA
SCM1
FBB
SNC1
IN1-
TEMP+
REF
AGND
TEMP-
SNO2
OUTA
SCM2
OUTB
SNC2
OUT1
AIN2
REF
AGND
M32K
PROG. V_OS
10:1
MUX
CMP
POS
IN+ ^REF
PGA
16-BIT ADC HFCLK
IN-
POLARITY AV = 1, 2, 4, 8 V/V
FLIPPER
10:1
MUX
NEG
OP1
INTERRUPT
16
UPIO
4
CRDY UPR<4:1>
UPF<4:1>
4
STATUS
ALD
SDC
ADD
ADOU
LCPD
LDVD
DV_DD (1.8V)
VOLTAGE
MONITOR
CPOUT (2.7V)
VOLTAGE
MONITOR
DV_{DD M32K}
LINEAR 1.65V
VOLTAGE
REGULATOR
CHARGE-
PUMP
DOUBLER
UPIO1
UPIO2
UPIO3
UPIO4
RESET
CPOUT
CF+
CF-
REG
1.25V BANDGAP
PGA
REF
10-BIT DAC
A_V = 1, 1.6384, 2 V/V
BUF
REF
10-BIT DAC
BUF
REF
OUTA
SWA
FBA
OUTB
SWB
FBB
DGND
IN1+ IN1-
OUT1
AGND
Figure 3. Functional Diagram
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