MAX1196 Datasheet, PDF (4/23 Pages) Maxim Integrated Products – Dual 8-Bit, 40Msps, 3V, Low-Power ADC with Internal Reference and Multiplexed Parallel Outputs

Dual 8-Bit, 40Msps, 3V, Low-Power ADC with
Internal Reference and Multiplexed Parallel Outputs
ELECTRICAL CHARACTERISTICS (continued)
(V_DD = OV_DD = 3V, 0.1µF and 2.2µF capacitors from REFP, REFN, and COM to GND; REFOUT connected to REFIN through a 10kΩ
resistor, V_IN = 2V_P-P (differential with respect to COM), C_L = 10pF at digital outputs (Note 5), f_CLK = 40MHz, T_A = T_MIN to T_MAX,
unless otherwise noted. ≥+25°C guaranteed by production test, <+25°C guaranteed by design and characterization. Typical values
are at T_A = +25°C.)
PARAMETER
SYMBOL
BUFFERED EXTERNAL REFERENCE (V_REFIN = 2.048V)
Positive Reference Output
Voltage
V_REFP (Note 5)
CONDITIONS
MIN TYP MAX UNITS
2.012
V
Negative Reference Output
Voltage
V_REFN (Note 5)
0.988
V
Common-Mode Level
V_COM (Note 5)
V_DD / 2
±0.1
V
Differential Reference Output
Voltage Range
∆V_REF ∆V_REF = V_REFP - V_REFN
1.024
±2%
V
REFIN Resistance
R_REFIN
>50
MΩ
Maximum REFP, COM Source
Current
I_SOURCE
5
mA
MaximumREFP, COM Sink Current
I_SINK
-250
µA
Maximum REFN Source Current
I_SOURCE
250
µA
Maximum REFN Sink Current
I_SINK
-5
mA
UNBUFFERED EXTERNAL REFERENCE (V_REFIN = AGND, reference voltage applied to REFP, REFN, and COM)
REFP, REFN Input Resistance
R_REFP, _{Measured between REFP and REFN}
R_REFN
4
kΩ
REFP, REFN, COM Input
Capacitance
C_IN
15
pF
Differential Reference Input
Voltage Range
∆V_REF ∆V_REF = V_REFP - V_REFN
1.024
±10%
V
COM Input Voltage Range
V_COM
V_DD / 2
±5%
V
REFP Input Voltage
V_REFP
REFN Input Voltage
V_REFN
DIGITAL INPUTS (CLK, PD, OE, SLEEP, T/B)
Input High Threshold
CLK
V_IH
PD, OE, SLEEP, T/B
Input Low Threshold
CLK
V_IL
PD, OE, SLEEP, T/B
V_COM +
V
∆V_REF / 2
V_COM -
∆V_REF / 2
V
0.8 ×
V_DD
0.8 ×
OV_DD
V
0.2 ×
V_DD
V
0.2 ×
OV_DD
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