Datasheet

MAX1303
4-Channel, ±V
REF
Multirange Inputs,
Serial 16-Bit ADC
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS (continued)
(V
AVDD1
= V
AVDD2
= V
DVDD
= V
DVDDO
= 5V, V
AGND1
= V
VDGND
= V
DGNDO
= V
AGND2
= V
AGND3
= 0V, f
CLK
= 3.5MHz (50% duty
cycle), external clock mode, V
REF
= 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input
range (±V
REF
), C
DOUT
= 50pF, C
SSTRB
= 50pF, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Preamplifier Supply Voltage AVDD2 4.75 5.25 V
Digital I/O Supply Voltage DVDDO 2.70 5.25 V
Internal reference 3 3.5
AVDD1 Supply Current I
AVDD1
External clock mode,
external acquisition
mode, or internal
clock mode
External reference 2.5 3
mA
DVDD Supply Current I
DVDD
External clock mode, external acquisition
mode, or internal clock mode
0.9 2 mA
AVDD2 Supply Current I
AVDD2
External clock mode, external acquisition
mode, or internal clock mode
17.5 25 mA
DVDDO Supply Current I
DVDDO
External clock mode, external acquisition
mode, or internal clock mode
0.2 1 mA
Partial power-down mode 1.3 mA
Total Supply Current
Full power-down mode 2 µA
Power-Supply Rejection Ratio PSRR All analog input ranges ±0.5 LSB
TIMING CHARACTERISTICS (Figures 14 and 15)
External clock mode 272 62
External acquisition mode 228 62SCLK Period t
CP
Internal clock mode 100 83
µs
External clock mode 109
External acquisition mode 92SCLK High Pulse Width (Note 6) t
CH
Internal clock mode 40
ns
External clock mode 109
External acquisition mode 92
SCLK Low Pulse Width (Note 6) t
CL
Internal clock mode 40
ns
DIN to SCLK Setup t
DS
40 ns
DIN to SCLK Hold t
DH
0ns
SCLK Fall to DOUT Valid t
DO
40 ns
CS Fall to DOUT Enable t
DV
40 ns