MAX1084 Datasheet, PDF (7/16 Pages) Maxim Integrated Products – 400ksps/300ksps, Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference

400ksps/300ksps, Single-Supply, Low-Power,
Serial 10-Bit ADCs with Internal Reference
Typical Operating Characteristics (continued)
(MAX1084: V_DD = +5.0V, f_SCLK = 6.4MHz; MAX1085: V_DD = +3.0V, f_SCLK = 4.8MHz; C_LOAD = 20pF, 4.7µF capacitor at REF,
T_A = +25°C, unless otherwise noted.)
INTERNAL REFERENCE VOLTAGE
vs. SUPPLY VOLTAGE
2.510
2.508
2.506
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
2.510
2.508
2.506
2.504
2.504
2.502
2.502
2.500
2.500
2.498
2.498
2.496
2.496
2.494
2.494
2.492
2.492
2.490
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
2.490
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
SUPPLY CURRENT vs. SUPPLY VOLTAGE
3.00
CODE = 1111 1111 1111 CONVERTING,
R_L = ∞
2.75 _{CL = 10pF}
SCLK = 6.4MHz
SUPPLY CURRENT vs. TEMPERATURE
3.0
V_DD = 5V, CONVERTING
2.7
2.50
2.25
CONVERTING,
SCLK = 4.8MHz
2.00
1.75
STATIC
1.50
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
2.4 _{VDD = 3V, CONVERTING}
2.1
1.8 _{VDD = 5V, STATIC VDD = 3V, STATIC}
1.5
-40 -20
0 20 40 60 80 100
TEMPERATURE (°C)
Pin Description
PIN
NAME
FUNCTION
1
V_DD
Positive Supply Voltage
2
AIN
Sampling Analog Input, 0 to V_REF Range
3
SHDN
Active-Low Shutdown Input. Pulling SHDN low shuts down the device and reduces the supply current
to 2µA (typ).
4
REF
Reference Voltage for Analog-to-Digital Conversion. Internal 2.5V reference output. Bypass with a
4.7µF capacitor.
5
GND Analog and Digital Ground
6
DOUT Serial Data Output. DOUT changes state at SCLK’s rising edge. High impedance when CS is high.
7
CS
Active-Low Chip Select. Initiates conversions on the falling edge. When CS is high, DOUT is high
impedance.
8
SCLK
Serial Clock Input. SCLK drives the conversion process and clocks data out at rates up to 6.4MHz
(MAX1084) or 4.8MHz (MAX1085).
_______________________________________________________________________________________ 7