SPECIFICATIONS (CONT)
ELECTRICAL
At TA = –40°C to +85°C, fS = 100kHz, VDIG = VANA = +5V, using internal reference and fixed resistors shown in Figure 4, unless otherwise specified.
ADS7808P/U
TYP
ADS7808PB/UB
TYP
PARAMETER
CONDITIONS
MIN
MAX
MIN
MAX
UNITS
DIGITAL OUTPUTS
Data Format
Data Coding
Pipeline Delay
Data Clock
Serial 12 bits
Binary Two's Complement or Straight Binary
Conversion results only available after completed conversion.
Selectable for internal or external data clock
Internal
EXT/INT LOW
EXT/INT HIGH
2.3
✻
MHz
MHz
(Output Only When
Transmitting Data)
External
(Can Run Continually)
0.1
+4
10
+0.4
±5
✻
✻
✻
✻
VOL
VOH
ISINK = 1.6mA
ISOURCE = 500µA
High-Z State,
V
V
µA
Leakage Current
✻
V
OUT = 0V to VDIG
High-Z State
Output Capacitance
15
15
pF
V
POWER SUPPLIES
Specified Performance
VDIG
VANA
Must be ≤ VANA
+4.75
+5
+5
+5.25
+5.25
✻
✻
*
*
*
*
V
+4.75
IDIG
IANA
0.3
16
*
*
mA
mA
*
Power Dissipation: PWRD LOW
PWRD HIGH
VDIG = VANA = 5V, fS = 100kHz
100
mW
µW
50
*
TEMPERATURE RANGE
Specified Performance
Derated Performance
Storage
–40
–55
–65
+85
+125
+150
*
*
*
*
*
*
°C
°C
°C
Thermal Resistance (θJA
Plastic DIP
SOIC
)
75
75
*
*
°C/W
°CW
NOTES: (1) LSB means Least Significant Bit. For the ±10V input range, one LSB is 4.88mV. (2) Typical rms noise at worst case transitions and temperatures. (3)
As measured with fixed resistors in Figure 4. Adjustable to zero with external potentiometer. (4) For bipolar input ranges, full scale error is the worst case of –Full
Scale or +Full Scale untrimmed deviation from ideal first and last code transitions, divided by the transition voltage (not divided by the full-scale range) and includes
the effect of offset error. For unipolar input ranges, full scale error is the deviation of the last code transition divided by the transition voltage. It also includes the
effect of offset error. (5) All specifications in dB are referred to a full-scale ±10V input. (6) Full-Power Bandwidth defined as Full-Scale input frequency at which Signal-
to (Noise + Distortion) degrades to 60dB. (7) Recovers to specified performance after 2 x FS input overvoltage.
ELECTROSTATIC
ABSOLUTE MAXIMUM RATINGS
DISCHARGE SENSITIVITY
Electrostatic discharge can cause damage ranging from per-
Analog Inputs: R1IN .......................................................................... ±25V
R2IN .......................................................................... ±25V
R3IN .......................................................................... ±25V
CAP ..................................... VANA+0.3V to AGND2 –0.3V
REF ....................................... Indefinite Short to AGND2,
Corporationrecommendsthatthisintegratedcircuitbehandled
Momentary Short to VANA
formancedegradationtocompletedevicefailure.Burr-Brown
and stored using appropriate ESD protection methods.
Ground Voltage Differences: DGND, AGND2 ................................. ±0.3V
VANA ...................................................................................................... 7V
VDIG to VANA ....................................................................................... +0.3
PACKAGE INFORMATION
VDIG ....................................................................................................... 7V
Digital Inputs ............................................................. –0.3V to VDIG +0.3V
Maximum Junction Temperature .................................................. +165°C
Internal Power Dissipation ............................................................ 700mW
Lead Temperature (soldering, 10s) .............................................. +300°C
PACKAGE DRAWING
NUMBER(1)
PRODUCT
PACKAGE
ADS7808P
ADS7808PB
ADS7808U
ADS7808UB
20-Pin Plastic DIP
20-Pin Plastic DIP
20-Pin SOIC
222
222
221
221
20-Pin SOIC
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.
ORDERING INFORMATION
MINIMUM
MAXIMUM
LINEARITY
ERROR (LSB)
SIGNAL-TO-
(NOISE + DISTORTION)
RATIO(dB)
SPECIFICATION
TEMPERATURE
RANGE (°C)
PRODUCT
PACKAGE
ADS7808P
ADS7808PB
ADS7808U
ADS7808UB
±0.9
±0.45
±0.9
70
72
70
72
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
20-Pin Plastic DIP
20-Pin Plastic DIP
20-Pin SOIC
±0.45
20-Pin SOIC
®
3
ADS7808
BB [ BURR-BROWN CORPORATION ]
