ADC14C080_15 Datasheet, PDF (6/31 Pages) Texas Instruments – 65/80 MSPS A/D Converter

ADC14C080
SNAS375C – SEPTEMBER 2006 – REVISED APRIL 2013
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ADC14C080 Converter Electrical Characteristics
Unless otherwise specified, the following specifications apply: AGND = DRGND = 0V, V_A = +3.0V, V_DR = +2.5V, Internal V_REF
= +1.2V, f_CLK = 80 MHz, 50% Duty Cycle, DCS Disabled, V_CM = V_CMO, C_L = 5 pF/pin. Typical values are for T_A = 25°C.
Boldface limits apply for T_MIN ≤ T_A ≤ T_MAX. All other limits apply for T_A = 25°C⁽¹⁾⁽²⁾
Parameter
Test Conditions
Typical⁽³⁾ Limits
Units
(Limits)
STATIC CONVERTER CHARACTERISTICS
Resolution with No Missing Codes
14
Bits (min)
INL
Integral Non Linearity
3.5
±1.5
-3.5
LSB (max)
LSB (min)
DNL
Differential Non Linearity
1
±0.5
-0.75
LSB (max)
LSB (min)
PGE
Positive Gain Error
0.3
±1.25
%FS (max)
NGE
Negative Gain Error
0.25
±1.25
%FS (max)
TC PGE
TC NGE
V_OFF
TC V_OFF
Positive Gain Error Tempco
Negative Gain Error Tempco
Offset Error
Offset Error Tempco
Under Range Output Code
−40°C ≤ T_A ≤ +85°C
−40°C ≤ T_A ≤ +85°C
−40°C ≤ T_A ≤ +85°C
-7
-6
0.065
7.5
0
±0.55
0
ppm/°C
ppm/°C
%FS (max)
ppm/°C
Over Range Output Code
16383 16383
REFERENCE AND ANALOG INPUT CHARACTERISTICS
V_CMO
Common Mode Output Voltage
1.5
1.40
1.56
V (min)
V (max)
V_CM
Analog Input Common Mode Voltage
1.5
1.4
1.6
V (min)
V (max)
C_IN
V_IN Input Capacitance (each pin to
GND) ⁽⁴⁾
V_IN = 1.5 Vdc ± 0.5 ^{(CLK LOW)}
V
(CLK HIGH)
8.5
3.5
pF
pF
V_REF
Internal Reference Voltage
TC V_REF Internal Reference Voltage Tempco
V_RP
Internal Reference top
−40°C ≤ T_A ≤ +85°C
See ⁽⁵⁾
1.20
18
1.98
1.89
2.06
V
ppm/°C
V (min)
V (max)
V_RN
Internal Reference bottom
See ⁽⁵⁾
0.98
0.89
1.06
V (min)
V (max)
Ext V_REF External Reference Voltage
See ⁽⁵⁾
1.20
1.176
1.224
V (min)
V (max)
(1) The inputs are protected as shown below. Input voltage magnitudes above V_A or below GND will not damage this device, provided
current is limited per Note 4 of the Absolute Maximum Ratings Table. However, errors in the A/D conversion can occur if the input goes
above 2.6V or below GND as described in the Operating Ratings section. See Figure 2.
(2) With a full scale differential input of 2V_P-P , the 14-bit LSB is 122.1 µV.
(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.
(4) The input capacitance is the sum of the package/pin capacitance and the sample and hold circuit capacitance.
(5) This parameter is ensured by design and/or characterization and is not tested in production.
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