User guide

ManualsBrandsRainbow Electronics ManualsSatelliteMAX188

MAX186/MAX188

Low-Power, 8-Channel,

Serial 12-Bit ADCs

16 ______________________________________________________________________________________

Reference Reference- VREF Power- Power-Up Maximum

Buffer Buffer Capacitor Down Delay Sampling

Compensation (µF) Mode (sec) Rate (ksps)

Mode

Enabled Internal Fast 5µ 26

Enabled Internal Full 300µ 26

Enabled External 4.7 Fast See Figure 14c 133

Enabled External 4.7 Full See Figure 14c 133

Disabled Fast 2µ 133

Disabled Full 2µ 133

Table 5. Typical Power-Up Delay Times

PD1 PD0 Device Mode

1 1 External Clock Mode

1 0 Internal Clock Mode

0 1 Fast Power-Down Mode

0 0 Full Power-Down Mode

Device Reference-Buffer

State Mode Compensation

1 Enabled Internal Compensation

Floating Enabled External Compensation

0 Full Power-Down N/A

Table 6. Software Shutdown and Clock Mode

Table 7. Hard-Wired Shutdown and

Compensation Mode

POWERED UP

FULL

POWER

DOWN

POWERED

POWERED UP

DATA VALID

(12 DATA BITS)

DATA VALID

(12 DATA BITS)

DATA INVALID

VALID

EXTERNAL

INTERNAL

XXXX

11 S 01

XXXXX XXXXX

S11

FAST

POWER-DOWN

MODE

DOUT

DIN

CLOCK

MODE

SHDN

SETS EXTERNAL

CLOCK MODE

SETS EXTERNAL

CLOCK MODE

SETS FAST

POWER-DOWN 

MODE

Figure 12a. Timing Diagram Power-Down Modes, External Clock