ADC08D1520WGMPR datasheet(11/58 Pages) TI1

Part #	ADC08D1520WGMPR

Description	Low Power, 8-Bit, Dual 1.5 GSPS or Single 3.0 GSPS A/D Converter

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ADC08D1520QML-SP

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SNAS420O – JANUARY 2008 – REVISED MARCH 2013

ADC08D1520 Converter Electrical Characteristics DC Parameters

(1) (continued)

The following specifications apply after calibration for VA = VDR = +1.9V; OutV = 1.9V; VIN FSR (a.c. coupled) = differential

870 mVP-P; CL = 10 pF; Differential, a.c. coupled Sine Wave Input Clock, fCLK = 1.5 GHz at 0.5 VP-P with 50% duty cycle; VBG =

Floating; Non-Extended Control Mode; SDR Mode; REXT = 3300 Ω ±0.1%; Analog Signal Source Impedance = 100 Ω

Differential; 1:2 Output Demultiplex, duty cycle stabilizer on. Boldface limits apply for TA = TMIN to TMAX. All other limits TA =

25°C, unless otherwise noted.

(2)(3)

Sub-

Parameter

Test Conditions

Notes

Typ(4)

Min

Max

Units

groups

VOFF_AD Input Offset Adjustment

Extended Control Mode

±45

mV

J

Range

PFSE

Positive Full-Scale Error

(5)

−0.6

±25

mV

1, 2, 3

NFSE

Negative Full-Scale Error

(5)

−1.31

±25

mV

1, 2, 3

Full-Scale Adjustment

FS_ADJ

Extended Control Mode

±20

%FS

Range

ANALOG INPUT AND REFERENCE CHARACTERISTICS

530

mVP-P

1, 2, 3

FSR pin 14 Low

600

650

mVP-P

1, 2, 3

Full Scale Analog

VIN

Differential Input Range

840

mVP-P

1, 2, 3

FSR pin 14 High

900

960

mVP-P

1, 2, 3

Common Mode Input

VCMO− VCMO +

VCMI

(6)

VCMO

V

Voltage

0.05

Differential

0.02

pF

Analog Input Capacitance,

(7)

Normal operation

Each input pin to ground

1.6

pF

CIN

Differential

0.08

pF

Analog Input Capacitance,

(7)

DES Mode

Each input pin to ground

2.2

pF

94

Ω

1, 2, 3

RIN

Differential Input Resistance

100

106

Ω

1, 2, 3

ANALOG OUTPUT CHARACTERISTICS

Common Mode Output

VCMO

ICMO = ±100 µA

(6)

1.26

0.95

1.45

V

Voltage

Common Mode Output

TC VCMO Voltage Temperature

118

ppm/°C

Coefficient

1.20

V

1, 2, 3

Bandgap Reference Output

VBG

IBG = ±100 µA

1.26

Voltage

1.33

V

1, 2, 3

Bandgap Reference Voltage TA = −55°C to +125°C,

TC VBG

61

ppm/°C

Temperature Coefficient

IBG = ±100 µA

Maximum Bandgap

CLOAD

Reference load

80

pF

VBG

Capacitance

TEMPERATURE DIODE CHARACTERISTICS

192 µA vs 12 µA, TJ = 25°C

71.23

mV

ΔVBE

Temperature Diode Voltage

192 µA vs 12 µA, TJ = 125°C

94.8

mV

CHANNEL-TO-CHANNEL CHARACTERISTICS

Offset Match

1

LSB

Zero offset selected in Control

Positive Full-Scale Match

1

LSB

Register

Zero offset selected in Control

Negative Full-Scale Match

1

LSB

Register

(5)

Calculation of Full-Scale Error for this device assumes that the actual reference voltage is exactly its nominal value. Full-Scale Error for

this device, therefore, is a combination of Full-Scale Error and Reference Voltage Error. See Figure 3. For relationship between Gain

Error and Full-Scale Error, see Specification Definitions for Gain Error.

(6)

This parameter is ensured by design and/or characterization and is not tested in production.

(7)

The analog and clock input capacitances are die capacitances only. Additional package capacitances of 0.65 pF differential and 0.95 pF

each pin to ground are isolated from the die capacitances by lead and bond wire inductances.

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