Rainbow Electronics MAX1116 - Manual (Page 3)

MAX1115/MAX1116
Single-Supply, Low-Power, Serial 8-Bit ADCs
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Note 1: Relative accuracy is the deviation of the analog value at any code from its theoretical value after the full-scale range and off-
set have been calibrated.
Note 2: Input = 0 with logic input levels of 0 and V DD .
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Rejection Ratio PSRR Full-scale or zero input ±0.5 ±1 LSB/V
DIGITAL INPUTS (CNVST AND SCLK)
Input High Voltage V IH 2 V
Input Low Voltage V IL 0.8 V
Input Hystersis V HYST 0.2 V
Input Current High I IH
±10 µA
Input Current Low I IL
±10 µA
Input Capacitance C IN 2 pF
DIGITAL OUTPUT (DOUT)
Output High Voltage V OH I SOURCE = 2mA V DD - 0.5 V
I
SINK
= 2mA 0.4
Output Low Voltage V OL
I SINK = 4mA 0.8
V
Three-State Leakage Current I L
±0.01 ±10 µA
Three-State Output Capacitance C OUT 4 pF
TIMING CHARACTERISTICS (Figures 6a–6d)
CNVST High Time t csh 100 ns
CNVST Low Time t csl 100 ns
Conversion Time t
conv
7.5 µs
Serial Clock High Time t ch 75 ns
Serial Clock Low Time t
cl
75 ns
Serial Clock Period t cp 200 ns
Falling of CNVST to DOUT
Active
t
csd
C
LOAD
= 100pF, Figure 1 100 ns
Serial Clock Falling Edge to
DOUT
t cd C LOAD = 100pF 10 100 ns
Serial Clock Rising Edge
To DOUT High-Z
t chz C LOAD = 100pF, Figure 2 100 500 ns
Last S er i al C l ock to N ext C N V S T
( successi ve conver si ons on C H 0)
t ccs 50 ns
ELECTRICAL CHARACTERISTICS (continued)
(V DD = +2.7V to +3.6V (MAX1115), V DD = +4.5V to +5.5V (MAX1116), T A = T MIN to T MAX , unless otherwise noted.)