AD1851/AD1861

REV. A

–4–

ABSOLUTE MAXIMUM RATINGS*

AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±0.3 V

Short Circuit . . . . . . . . . . . . . . . . . Indefinite Short to Ground

Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300

°C, 10 sec

Storage Temperature . . . . . . . . . . . . . . . . . . –60

°C to +100°C

*Stresses greater than those listed under “Absolute Maximum Ratings” may cause

permanent damage to the device. This is a stress rating only and functional

operation of the device at these or any other conditions above those indicated in the

operational section of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect device reliability.

PIN DESCRIPTIONS

Analog Negative Power Supply

2

DGND

Logic Ground

Logic Positive Power Supply

4

NC

No Connection

5

CLK

Clock Input

6

LE

Latch Enable Input

7

DATA

Serial Data Input

8

NC

No Internal Connection*

Voltage Output

10

Feedback Resistor

11

SJ

Summing Junction

12

AGND

Analog Ground

13

Current Output

14

MSB ADJ

MSB Adjustment Terminal

15

TRIM

MSB Trimming Potentiometer Terminal

16

Analog Positive Power Supply

safely applied.

ORDERING GUIDE

Package

Model

Resolution

THD + N

Option*

AD1851N

16 Bits

0.008%

N-16

AD1851N-J

16 Bits

0.004%

N-16

AD1851R

16 Bits

0.008%

R-16

AD1851R-J

16 Bits

0.004%

R-16

AD1861N

18 Bits

0.008%

N-16

AD1861N-J

18 Bits

0.004%

N-16

AD1861R

18 Bits

0.008%

R-16

AD1861R-J

18 Bits

0.004%

R-16

*N = Plastic DIP Package; R = Small Outline (SOIC) Package.

CAUTION

ESD (electrostatic discharge) sensitive device. The digital control inputs are diode protected;

however, permanent damage may occur on unconnected devices subject to high energy electro-

static fields. Unused devices must be stored in conductive foam or shunts. The protective foam

should be discharged to the destination socket before devices are inserted .

WARNING!

ESD SENSITIVE DEVICE

Typical Performance

175

150

125

100

75

50

25

2

4

6

8

10

12

14

CLOCK FREQUENCY – MHz

Power Dissipation vs. Clock Frequency

10

1

0.1

0.01

0.001

–30 –20 –10

0

10

20

30

40

50

60

70

80

90

TEMPERATURE –

–60dB

–20dB

0dB

THD vs. Temperature