Rainbow Electronics MAX1145 - Manual (Page 4)

MAX1144/MAX1145
14-Bit ADCs, 150ksps, 3.3V Single Supply
4 _______________________________________________________________________________________
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Hysteresis V HYST 0.2 V
Input Capacitance C IN 10 pF
DIGITAL OUTPUTS
Output High Voltage V OH I SOURCE = 0.5mA
DV DD -
0.5
V
I SINK = 5mA 0.4
Output Low Voltage V OL
I SINK = 16mA 0.8
V
Three-State Leakage Current I L
CS = DV
DD -10 +10 µA
Three-State Output Capacitance CS = DV
DD 10 pF
POWER SUPPLIES
Analog Supply AV DD 3.135 3.3 3.465 V
Digital Supply DV DD 3.135 3.3 3.465 V
Unipolar mode 3.9 8
Bipolar mode 7 11
mA
Analog Supply Current I ANALOG
SHDN = 0, or software power-down mode 0.1 10 µA
Unipolar or bipolar mode 1 2 mA
Digital Supply Current I DIGITAL
SHDN = 0, or software power-down mode 1.1 10 µA
Power-Supply Rejection Ratio
(Note 8)
PSRR AV DD = DV DD = 3.135V to 3.465V 65 dB
ELECTRICAL CHARACTERISTICS (continued)
(AV DD = DV DD = 3.3V ±5%, f SCLK = 3.6MHz, external clock (50% duty cycle), 24 clocks/conversion (150ksps), bipolar input, V REF =
2.048V, C REF = 4.7µF, C CREF = 1µF, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)
TIMING CHARACTERISTICS (Figures 5 and 6)
(AV
DD
= DV
DD
= 3.3V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DIN to SCLK Setup t DS 50 ns
DIN to SCLK Hold t DH 0 ns
SCLK to DOUT Valid t DO 70 ns
CS Fall to DOUT Enable t DV C LOAD = 50pF 80 ns
CS Rise to DOUT Disable t TR C LOAD = 50pF 80 ns
CS to SCLK Rise Setup t
CSS
100 ns
CS to SCLK Rise Hold t CSH 0 ns
SCLK High Pulse Width t CH 120 ns
SCLK Low Pulse Width t CL 120 ns
SCLK Fall to SSTRB t SSTRB C LOAD = 50pF 80 ns
CS Fall to SSTRB Enable t SDV C LOAD = 50pF, external clock mode 80 ns
CS Rise to SSTRB Disable t STR C LOAD = 50pF, external clock mode 80 ns
SSTRB Rise to SCLK Rise t SCK Internal clock mode 0 ns
RST Pulse Width t RS 278 70 ns