AD1851/AD1861
ABSO LUTE MAXIMUM RATINGS*
P IN D ESCRIP TIO NS
VL to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V to 6.50 V
VS to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V to 6.50 V
–VS to AGND . . . . . . . . . . . . . . . . . . . . . . . . . –6.50 V to 0 V
Digital Inputs to DGND . . . . . . . . . . . . . . . . . . . –0.3 V to VL
AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.3 V
Short Circuit . . . . . . . . . . . . . . . . . Indefinite Short to Ground
Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C, 10 sec
Storage T emperature . . . . . . . . . . . . . . . . . . –60°C to +100°C
1
2
3
4
5
6
7
8
–VS
DGND
VL
NC
CLK
LE
DAT A
NC
VOUT
RF
Analog Negative Power Supply
Logic Ground
Logic Positive Power Supply
No Connection
Clock Input
Latch Enable Input
Serial Data Input
No Internal Connection*
Voltage Output
Feedback Resistor
Summing Junction
Analog Ground
Current Output
MSB Adjustment T erminal
MSB T rimming Potentiometer T erminal
Analog Positive Power Supply
*Stresses greater than those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. T his 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.
9
10
11
12
13
14
15
16
SJ
AGND
IOUT
MSB ADJ
T RIM
VS
O RD ERING GUID E
P ackage
Model
Resolution
TH D + N
O ption*
*Pin 8 has no internal connection; -VL from AD1856 or AD1860 socket can be
safely applied.
AD1851N
AD1851N-J
AD1851R
AD1851R-J
AD1861N
AD1861N-J
AD1861R
16 Bits
16 Bits
16 Bits
16 Bits
18 Bits
18 Bits
18 Bits
18 Bits
0.008%
0.004%
0.008%
0.004%
0.008%
0.004%
0.008%
0.004%
N-16
N-16
R-16
R-16
N-16
N-16
R-16
R-16
AD1861R-J
*N = Plastic DIP Package; R = Small Outline (SOIC) Package.
CAUTIO N
ESD (electrostatic discharge) sensitive device. T he 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. T he protective foam
should be discharged to the destination socket before devices are inserted .
WARNING!
ESD SENSITIVE DEVICE
Typical Performance
10
175
150
1
125
–60dB
100
0.1
75
0.01
50
25
–20dB
0dB
0.001
2
4
6
8
10
12
14
–30 –20 –10
0
10
20 30 40
50 60 70 80 90
CLOCK FREQUENCY – MHz
TEMPERATURE – °C
Power Dissipation vs. Clock Frequency
THD vs. Tem perature
–4–
REV. A