LM98640QML-SP Datasheet, PDF (8/54 Pages) Texas Instruments – Dual Channel, 14-Bit, 40 MSPS Analog Front End with LVDS Output

LM98640QML-SP
SNAS461D – MAY 2010 – REVISED SEPTEMBER 2015
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6.6 LM98640QML Electrical Characteristics⁽¹⁾⁽²⁾
The following specifications apply for VDD33 = 3.3V, VDD18 = 1.8V, C_L = 10pF, and f_INCLK = 40MHz unless otherwise
specified.
PARAMETER
TEST CONDITIONS
NOTES
SUB-
GROUPS
MIN TYP⁽³⁾ MAX UNIT
CMOS DIGITAL INPUT DC SPECIFICATIONS (SCLK, SEN, SDI, CLPIN)
V_IH
Logical “1” Input Voltage
V_IL
Logical “0” Input Voltage
CLPIN
I_IH
Logical “1” Input Current
V_IH = VDD33
SCLK, SDI
SEN
1, 2, 3
1, 2, 3
1, 2, 3
2.0
V
0.8 V
70 100 μA
40 300 nA
0.2
6 μA
CLPIN
I_IL
Logical “0” Input Current
V_IL = VSS
SCLK, SDI
SEN
-300 -85
nA
1, 2, 3
-300 -50
nA
-100 -70
μA
CMOS DIGITAL OUTPUT DC SPECIFICATIONS (SDO)
V_OH
Logical "1" Output Voltage
I_OUT = -0.5 mA
V_OL
Logical "0" Output Voltage
I_OUT = 1.6 mA
I_OH
Output Leakage Current
V_OUT = V_DD
I_OL
Output Leakage Current
V_OUT = V_SS
LVDS CLOCK RECEIVER DC SPECIFICATIONS (INCLK+ and INCLK- Pins)
1, 2, 3
1, 2, 3
1, 2, 3
1, 2, 3
1.8 1.93
0.05
20
-50 -20
V
0.2 V
50 nA
nA
Differential LVDS Clock
V_IHL
High Threshold Voltage
R_L = 100 Ω
V_CM (LVDS Input Common
Mode Voltage) = 1.25V
1, 2, 3
100 250 mV
Differential LVDS Clock
RL = 100 Ω
V_ILL
Low Threshold Voltage
V_CM (LVDS Input Common
Mode Voltage) = 1.25V
1, 2, 3
-250 -100
mV
I_IHL
Diffferential LVDS Clock Input
Current
V_IH = VDD33
1, 2, 3
70 100 μA
I_ILL
Diffferential LVDS Clock Input
Current
V_IL = VSS
1, 2, 3
-49 -34
μA
(1) The analog inputs are protected as shown below. Input voltage magnitudes beyond the supply rails will not damage the device, provided
the current is limited per Note 2 under the LM98640QML Electrical Characteristics. However, input errors will be generated If the input
goes above VDD33 and below VSS.
V_A
I/O
To Internal Circuitry
AGND
(2) When the input voltage (V_IN) at any pin exceeds the power supplies (V_IN < VSS or V_IN > VDD33), the current at that pin should be
limited to 25 mA. The 50 mA maximum package input current rating limits the number of pins that can simultaneously safely exceed the
power supplies with an input current of 25 mA to two.
(3) Typical figures are at T_A = 25°C, and represent most likely parametric norms at the time of product characterization. The typical
specifications are not ensured.
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