MAX1115 Datasheet, PDF (3/12 Pages) Maxim Integrated Products – Single-Supply, Low-Power, Serial 8-Bit ADCs

Single-Supply, Low-Power, Serial 8-Bit ADCs
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.)
PARAMETER
SYMBOL
CONDITIONS
Supply Rejection Ratio
PSRR Full-scale or zero input
DIGITAL INPUTS (CNVST AND SCLK)
Input High Voltage
V_IH
Input Low Voltage
V_IL
Input Hystersis
Input Current High
V_HYST
I_IH
Input Current Low
I_IL
Input Capacitance
C_IN
DIGITAL OUTPUT (DOUT)
Output High Voltage
V_OH
I_SOURCE = 2mA
Output Low Voltage
I_SINK = 2mA
V_OL
I_SINK = 4mA
Three-State Leakage Current
I_L
Three-State Output Capacitance C_OUT
TIMING CHARACTERISTICS (Figures 6a–6d)
CNVST High Time
t_csh
CNVST Low Time
Conversion Time
t_csl
t_conv
Serial Clock High Time
t_ch
Serial Clock Low Time
t_cl
Serial Clock Period
t_cp
Falling of CNVST to DOUT
Active
t_csd
C_LOAD = 100pF, Figure 1
MIN TYP MAX
±0.5
±1
2
0.8
0.2
±10
±10
2
V_DD - 0.5
0.4
0.8
±0.01 ±10
4
100
100
7.5
75
75
200
100
Serial Clock Falling Edge to
DOUT
t_cd
C_LOAD = 100pF
10
100
Serial Clock Rising Edge
To DOUT High-Z
t_chz
C_LOAD = 100pF, Figure 2
100
500
Last Serial Clock to Next CNVST
(successive conversions on CH0)
t_ccs
50
UNITS
LSB/V
V
V
V
µA
µA
pF
V
V
µA
pF
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns
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.
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