MAX1040/MAX1042/MAX1046/MAX1048
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
6 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= 4.75V to 5.25V, external reference V
REF
= 4.096V, f
CLK
= 3.6MHz (50% duty cycle), T
A
= -40°C to +85°C, unless
otherwise noted. Typical values are at AV
DD
= DV
DD
= 5V, T
A
= +25°C. Outputs are unloaded, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
POWER REQUIREMENTS (Note 15)
Digital Positive-Supply Voltage DV
DD
2.7 AV
DD
V
Idle, all blocks shut down 0.2 4 µA
Digital Positive-Supply Current DI
DD
Only ADC on, external reference 1 mA
Analog Positive-Supply Voltage AV
DD
4.75 5.25
V
Idle, all blocks shut down 0.2 2 µA
f
SAMPLE
= 225ksps 2.8 4.2
Only ADC on,
external reference
f
SAMPLE
= 100ksps 2.6
Analog Positive-Supply Current A
IDD
All DACs on, no load, internal reference 1.5 4.0
mA
REF1 Positive-Supply Rejection PSRR
AV
D D
= 4.75V -80
dB
DAC Positive-Supply Rejection PSRD
Outp ut cod e = FFFhex, AV
D D
= 4.75V to
5.25V
±0.1 ±0.5 mV
ADC Positive-Supply Rejection PSRA
Ful l - scal e i np ut, AV
D D
= 4.75V to 5.25V ±0.06 ±0.5
mV
TIMING CHARACTERISTICS (Figures 6–13)
SCLK Clock Period t
CP
40 ns
SCLK Pulse-Width High t
CH
40/60 duty cycle 16 ns
SCLK Pulse-Width Low t
CL
60/40 duty cycle 16 ns
GPIO Output Rise/Fall After
CS Rise
t
GOD
C
LOAD
= 20pF 100 ns
GPIO Input Setup Before CS Fall t
GSU
0ns
LDAC Pulse Width t
LDACPWL
20 ns
C
LOAD
= 20pF, SLOW = 0 1.8 12.0
SCLK Fall to DOUT Transition
(Note 16)
t
DOT
C
LOAD
= 20pF, SLOW = 1 10 40
ns
C
LOAD
= 20pF, SLOW = 0 1.8 12.0
SCLK Rise to DOUT Transition
(Notes 16, 17)
t
DOT
C
LOAD
= 20pF, SLOW = 1 10 40
ns
CS Fall to SCLK Fall Setup Time t
CSS
10 ns
SCLK Fall to CS Rise Setup
Time
t
CSH
0 2000 ns
DIN to SCLK Fall Setup Time t
DS
10 ns
DIN to SCLK Fall Hold Time t
DH
0ns
CS Pulse-Width High t
CSPWH
50 ns
CS Rise to DOUT Disable t
DOD
C
LOAD
= 20pF 25 ns
CS Fall to DOUT Enable t
DOE
C
LOAD
= 20pF 1.5 25.0 ns
EOC Fall to CS Fall t
RDS
30 ns