ADC700JH Burr-Brown Corporation, ADC700JH Datasheet - Page 11

• Manufacturer Part Number: ADC700JH
• Description: 16-bit Resolution With Microprocessor Interface A/D Converter
• Manufacturer: Burr-Brown Corporation

FIGURE 10. Serial Data Output Providing Convenient
TABLE III. Control Line Functions.
TABLE IV. Control Input Truth Table.
NOTE: If a conversion command is asserted while a conversion is in progress, the command is ignored. If the conversion command remains asserted when a
conversion is finished, a new conversion will begin.
PIN DESIGNATION
CS (Pin 9)
WR (Pin 7)
RD (Pin 8)
HBEN (Pin 10)
Reset (Pin 6)
BTCEN (Pin 23)
RESET
0
1
1
1
1
1
1
ADC700
Strobe
Reset
Serial
Serial
Data
Data
WR
X
X
0
1
1
0
0
Isolation.
CONTROL LINE
DEFINITION
Chip Select
Write (Convert)
Read
High Byte Enable
Reset
BTC Enable
RD
X
X
X
0
0
0
0
“1” = Low Byte
“0” = High Byte
V
DD
HBEN
X
X
X
0
1
0
1
Isolation Barrier
CS
X
1
0
0
0
0
0
FUNCTION
Must be Low to either initiate a conversion or read output data.
Conversion begins after the High-to-Low transition.
Turns ON the three-state output drivers upon being asserted low.
Selects the MSB or the LSB for readout. Data Ready is cleared when HBEN is Low and RD is asserted.
Resets internal logic. Must be asserted after power-up or a power interruption clears Status and Data
Ready to Low.
Sets the output code to Binary Twos Complement (BTC) when Low. Output code is Bipolar Offset Binary
(BOB) when High.
V
OPERATION
Reset converter logic. Status and Data Ready set Low.
No operation.
Initiate conversion.
Places High Byte on output port. Clears Data Ready flag.
Placed Low Byte on output port. Does not clear Data Ready flag.
Initiates conversion and places High Byte or output port. Clears Data Ready.
Initiates conversion and places Low Byte on output port. Does not clear Data Ready flag.
DD
11
FIGURE 11. Continuous Conversion Circuit Connection.
To Interrupt
CS
WR
Status
ADC700
ADC700
®