Datasheet
MAX1020/MAX1022/MAX1057/MAX1058
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS (continued)
(V
AVDD
= V
DVDD
= 2.7V to 3.6V (MAX1057), external reference V
REF
= 2.5V (MAX1057), V
AVDD
= V
DVDD
= 4.75V to 5.25V
(MAX1020/MAX1022/MAX1058), external reference V
REF
= 4.096V (MAX1020/MAX1022/MAX1058), f
CLK
= 3.6MHz (50% duty cycle),
T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
AVDD
= V
DVDD
= 3V (MAX1057), V
AVDD
= V
DVDD
= 5V
(MAX1020/MAX1022/MAX1058), T
A
= +25°C. Outputs are unloaded, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
From power-down mode, V
AVDD
= 5V 25
Wake-Up Time (Note 12)
From power-down mode, V
AVDD
= 2.7V 21
µs
1kΩ Output Termination Programmed in power-down mode 1 kΩ
100kΩ Output Termination
At wake-up or programmed in
power-down mode
100 kΩ
DYNAMIC PERFORMANCE (Notes 5, 13)
Output-Voltage Slew Rate SR Positive and negative 3 V/µs
Output-Voltage Settling Time t
S
To 1 LSB, 400 - C00 hex (Note 7) 2 5 µs
Digital Feedthrough Code 0, all digital inputs from 0 to V
DVDD
0.5 nV•s
Major Code Transition Glitch
Impulse
Between codes 2047 and 2048 4 nV
•s
From V
REF
660
Output Noise (0.1Hz to 50MHz)
Using internal reference 720
µV
P-P
From V
REF
260
Output Noise (0.1Hz to 500kHz)
Using internal reference 320
µV
P-P
DAC-to-DAC Transition
Crosstalk
0.5 nV
•s
INTERNAL REFERENCE
MAX1057 2.482 2.50 2.518
REF1 Output Voltage (Note 8)
MAX1020/MAX1022/MAX1058 4.066 4.096 4.126
V
REF1 Temperature Coefficient TC
REF
±30
ppm/°C
V
REF
= 2.5V 0.39
REF1 Short-Circuit Current
V
REF
= 4.096V 0.63
mA
EXTERNAL-REFERENCE INPUT
REF1 Input Voltage Range V
REF1
REF modes 01, 10, and 11 (Note 4) 0.7 V
AVDD
V
REF1 Input Impedance R
REF1
70 100 130 kΩ
DIGITAL INTERFACE
DIGITAL INPUTS (SCLK, DIN, CS, CNVST, LDAC)
Input-Voltage High V
IH
V
DVDD
= 2.7V to 5.25V 2.4 V
V
DVDD
= 3.6V to 5.25V 0.8
Input-Voltage Low V
IL
V
DVDD
= 2.7V to 3.6V 0.6
V
Input Leakage Current I
L
±0.01 ±10 µA
Input Capacitance C
IN
15 pF
DIGITAL OUTPUT (DOUT) (Note 14)
Output-Voltage Low V
OL
I
SINK
= 2mA 0.4 V