AD9218BSTZ-65 datasheet(4/29 Pages) AD

Part #	AD9218BSTZ-65

Description	3V Dual Analog-to-Digital Converter

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AD9218

Rev. C | Page 3 of 28

SPECIFICATIONS

DC SPECIFICATIONS

VDD = 3.0 V, VD = 3.0 V; external reference, unless otherwise noted.

Table 1.

AD9218BST-40/-65

AD9218BST-80/-105

Parameter

Temp

Test

Level

Min

Typ

Max

Min

Typ

Max

Unit

RESOLUTION

10

Bits

ACCURACY

No Missing Codes1

Full

VI

Guaranteed, not tested

Offset Error2

25°C

I

–18

2

18

–18

2

18

LSB

Gain Error2

25°C

I

–2

3

8

–2

3.5

8

% FS

Differential Nonlinearity

(DNL)

25°C

I

–1

±0.3/±0.6

1/1.3

–1

±0.5/±0.8

1.2/1.7

LSB

Full

VI

±0.8

±0.6/±0.9

LSB

Integral Nonlinearity

(INL)

25°C

I

–1/–1.6

±0.3/±1

1/1.6

–1.35/–2.7

±0.75/±2

+1.35/2.7

LSB

Full

VI

±1

±1/±2.3

LSB

TEMPERATURE DRIFT

Offset Error

Full

V

10

4

ppm/°C

Gain Error2

Full

V

80

100

ppm/°C

Reference

Full

V

40

ppm/°C

REFERENCE

Internal Reference Voltage

25°C

I

1.18

1.24

1.28

1.18

1.24

1.28

V

(REFOUT)

Input Resistance (REFINA,

REFINB)

Full

VI

9

11

13

9

11

13

kΩ

ANALOG INPUTS

Differential Input Voltage

Range (AIN, AIN)3

Full

V

1 or 2

1

V

Common-Mode Voltage3

Full

V

VD/3

V

Input Resistance

Full

VI

8

10

14

8

10

14

kΩ

Input Capacitance

25°C

V

3

pF

POWER SUPPLY

VD

Full

IV

2.7

3

3.6

2.7

3

3.6

V

VDD

Full

IV

2.7

3

3.6

2.7

3

3.6

V

Supply Currents

IVD (VD = 3.0 V)4

Full

VI

108/117

113/130

172/183

175/188

mA

IVDD (VDD = 3.0 V)4

25°C

V

7/11

13/17

mA

Power Dissipation DC5

Full

VI

325/350

340/390

515/550

525/565

mW

IVD Power-Down Current6

Full

VI

20

22

mA

Power Supply Rejection

Ratio

25°C

I

±1

mV/V

1 No missing codes across industrial temperature range guaranteed for 40 MSPS, 65 MSPS, and 80 MSPS grades. No missing codes at room temperature guaranteed for

105 MSPS grade.

2 Gain error and gain temperature coefficients are based on the ADC only (with a fixed 1.25 V external reference) 65 grade in 2 V p-p range, 40, 80, 105 grades in 1 V p-p range.

3 (AIN –AIN) = ±0.5 V in 1 V range (full scale), (AIN – AIN) = ±1 V in 2 V range (full scale). The analog inputs self-bias to VD/3. This common-mode voltage can be overdriven

externally by a low impedance source by ±300 mV (differential drive, gain = 1) or ±150 mV (differential drive, gain = 2).

4 AC power dissipation measured with rated encode and a 10.3 MHz analog input @ 0.5 dBFS, CLOAD = 5 pF.

5 DC power dissipation measured with rated encode and a dc analog input (outputs static, IVDD = 0).

6 In power-down state, IVDD = ±10 μA typical (all grades).

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