AD7834ARZ-REEL View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
AD7834ARZ-REEL Datasheet PDF : 28 Pages
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AD7834/AD7835
Pin No.
MQFP
16 to 29
32
36, 35
38
39
40
42, 43
Pin No. PLCC
22 to 35
38
42, 41
44
1
2
4, 5
Pin Mnemonic
DB0 to DB13
DSGB
VREF(+)B, VREF(−)B
AGND
VDD
VSS
VREF(+)A, VREF(−)A
Description
Parallel Data Inputs. The AD7835 can accept a straight 14-bit parallel word on DB0 to
DB13, where DB13 is the MSB and the BYSHF input is hardwired to a logic high.
Alternatively for byte loading, the bottom eight data inputs, DB0 to DB7, are used for
data loading, and the top six data inputs, DB8 to DB13, should be hardwired to a logic
low. The BYSHF control input selects whether 8 LSBs or 6 MSBs of data are being loaded
into the device.
Device Sense Ground B Input. Used in conjunction with the CLR input for power-on
protection of the DACs. When CLR is low, DAC outputs VOUT3 and VOUT4 are forced to the
potential on the DSGB pin.
Reference Inputs for DACs 3 and 4. These reference voltages are referred to AGND.
Analog Ground.
Positive Analog Power Supply: 15 V ± 5% or 12 V ± 5%.
Negative Analog Power Supply: −15 V ± 5% or −12 V ± 5%.
Reference Inputs for DAC 1 and DAC 2. These reference voltages are referred to AGND.
Rev. D | Page 10 of 28
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