MAX1021 Datasheet, PDF (6/40 Pages) Maxim Integrated Products – 10-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports

10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
ELECTRICAL CHARACTERISTICS (continued)
(AV_DD = DV_DD = 2.7V to 5.25V, external reference V_REF = 2.5V, 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 = 3V, 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
Digital Positive-Supply Current
DV_DD
DI_DD
Idle, all blocks shut down
Only ADC on, external reference
2.7
AV_DD
V
0.2
4
µA
1
mA
Analog Positive-Supply Voltage
AV_DD
Idle, all blocks shut down
2.70
5.25
V
0.2
2
µA
Analog Positive-Supply Current
A_IDD
Only ADC on,
f_SAMPLE = 225ksps
external reference _{fSAMPLE = 100ksps}
All DACs on, no load, internal reference
2.8
4.2
2.6
mA
1.5
4.0
REF1 Positive-Supply Rejection PSRR AV_DD = 2.7V
-77
dB
DAC Positive-Supply Rejection
PSRD
Output
code = ^{AVDD = 2.7V to 5.25V}
FFFhex
±0.1 ±0.5
mV
ADC Positive-Supply Rejection
PSRA
Full-
scale
input
AV_DD = 2.7V to 5.25V
TIMING CHARACTERISTICS (Figures 6–13)
SCLK Clock Period
t_CP
SCLK Pulse-Width High
t_CH 40/60 duty cycle
SCLK Pulse-Width Low
t_CL 60/40 duty cycle
GPIO Output Rise/Fall After
CS Rise
t_GOD C_LOAD = 20pF
GPIO Input Setup Before CS Fall t_GSU
LDAC Pulse Width
t_LDACPWL
SCLK Fall to DOUT Transition
(Note 16)
t_DOT
C_LOAD = 20pF, SLOW = 0
C_LOAD = 20pF, SLOW = 1
SCLK Rise to DOUT Transition
(Notes 16, 17)
CS Fall to SCLK Fall Setup Time
t_DOT
t_CSS
C_LOAD = 20pF, SLOW = 0
C_LOAD = 20pF, SLOW = 1
SCLK Fall to CS Rise Setup
Time
t_CSH
DIN to SCLK Fall Setup Time
DIN to SCLK Fall Hold Time
CS Pulse-Width High
CS Rise to DOUT Disable
CS Fall to DOUT Enable
EOC Fall to CS Fall
t_DS
t_DH
t_CSPWH
t_DOD
t_DOE
t_RDS
C_LOAD = 20pF
C_LOAD = 20pF
±0.06 ±0.5
mV
40
ns
16
ns
16
ns
100
ns
0
ns
20
ns
1.8
12.0
ns
10
40
1.8
12.0
ns
10
40
10
ns
0
2000
ns
10
ns
0
ns
50
ns
25
ns
1.5
25.0
ns
30
ns
6 _______________________________________________________________________________________