MAX1270BCAI Datasheet, PDF (5/20 Pages) Maxim Integrated Products – Multirange, +5V, 8-Channel, Serial 12-Bit ADCs

Multirange, +5V, 8-Channel,
Serial 12-Bit ADCs
ELECTRICAL CHARACTERISTICS (continued)
(V_DD = +5.0V ±5%; unipolar/bipolar range; external reference mode, V_REF = +4.096V; 4.7µF at REF; external clock; f_CLK = 2.0MHz,
50% duty cycle (MAX127_B); f_CLK = 1.8MHz, 50% duty cycle (MAX127_A); 18 clock/conversion cycle, T_A = T_MIN to T_MAX, unless
otherwise noted. Typical values are T_A = +25°C.)
PARAMETER
Conversion Time
Throughput Rate
Bandgap Reference Startup Time
SYMBOL
CONDITIONS
t_CONV
External clock mode
(Note 8)
MAX127_A
MAX127_B
Internal clock mode, Figure 9
External clock mode
MAX127_A
MAX127_B
Internal clock mode
Power-up (Note 9)
MIN TYP MAX UNITS
6.6
6.0
µs
6
7.7
11
100
110 ksps
43
200
µs
Reference Buffer Settling Time
To 0.1mV, REF bypass
capacitor fully
discharged
DIGITAL INPUTS (DIN, SCLK, CS, and SHDN)
Input High Threshold Voltage
V_IH
Input Low Threshold Voltage
V_IL
Input Hysteresis
V_HYS
Input Leakage Current
I_IN
V_IN = 0 to V_DD
Input Capacitance
C_IN
(Note 4)
DIGITAL OUTPUTS (DOUT, SSTRB)
Output Voltage Low
V_OL
I_SINK = 5mA
I_SINK = 16mA
C_REF = 4.7µF
C_REF = 33µF
Output Voltage High
V_OH
I_SOURCE = 0.5mA
Tri-State Leakage Current
Tri-State Output Capacitance
I_L
C_OUT
CS = V_DD
CS = V_DD (Note 4)
8
ms
60
2.4
V
0.8
V
0.2
V
-10
+10
µA
15
pF
0.4
V
0.4
V_{DD -}
V
0.5
-10
+10
µA
15
pF
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