AD7237KN Analog Devices Inc, AD7237KN Datasheet - Page 5

• Manufacturer Part Number: AD7237KN
• Description: IC DAC 12BIT LC2MOS DUAL 24-DIP
• Manufacturer: Analog Devices Inc
• Series: DACPORT®r

Specifications of AD7237KN

• Data Interface: Parallel
• Rohs Status: RoHS non-compliant
• Settling Time: 8µs
• Number Of Bits: 12
• Number Of Converters: 2
• Voltage Supply Source: Dual ±
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 24-DIP (0.300", 7.62mm)
• Resolution (bits): 12bit
• Sampling Rate: 125kSPS
• Input Channel Type: Parallel
• Supply Current: 11mA
• Digital Ic Case Style: DIP
• No. Of Pins: 24
• Current, Supply: ± 10 μA (Max.)
• Differential Nonlinearity: ± 0.9 LSB (Min.)
• Offset Error: ± 3 LBS (Max.)
• Package Type: PDIP
• Power Dissipation: 1000 mW
• Resolution: 12 Bits
• Temperature, Operating, Maximum: 85 °C
• Temperature, Operating, Minimum: -40 °C
• Voltage, Input Range: 5.25 V (Max.) (Ref.)
• Voltage, Supply: 2.4 V (Min.)
• Power Dissipation (max): -
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

REV. 0
AD7247A PIN FUNCTION DESCRIPTION (DIP PIN NUMBERS)
Pin
1
2
3
4
5
6
7–15
16
17
18
19
20
21
22
23
24
Mnemonic
REF OUT
R
V
DB11
DB10
GND
DB9-DB1
DB0
CSB
CSA
WR
V
V
V
R
REF IN
OFSB
OUTB
DD
OUTA
SS
OFSA
AD7237A PIN CONFIGURATION
DIP and SOIC
Data Bit 11 (MSB).
Data Bit 9 to Data Bit 1.
Description
Voltage Reference Output. The internal 5 V analog reference is provided at this pin. To operate the part
with internal reference, REF OUT should be connected to REF IN.
Output Offset Resistor for DAC B. This input configures the output ranges for DAC B. It is connected to
V
Analog Output Voltage from DAC B. This is the buffer amplifier output voltage. Three different output
voltage ranges can be chosen: 0 V to +5 V, 0 V to +10 V and 5 V. The amplifier is capable of developing
+10 V across a 2 k resistor to GND.
Data Bit 10.
Ground. Ground reference for all on-chip circuitry.
Data Bit 0 (LSB).
Chip Select Input for DAC B. Active low logic input. DAC B is selected when this input is active.
Chip Select Input for DAC A. Active low logic input. DAC A is selected when this input is active.
Write Input. WR is an active low logic input which is used in conjunction with CSA and CSB to write data
to the DAC latches.
Positive Supply (+12 V to +15 V).
Analog Output Voltage from DAC A. This is the buffer amplifier output voltage. Three different output
voltage ranges can be chosen: 0 V to +5 V, 0 V to +10 V and 5 V. The amplifier is capable of developing
+10 V across a 2 k resistor to GND.
Negative Supply (0 V or –12 V to –15 V).
Output Offset Resistor for DAC A. This input configures the output ranges for DAC A. It is connected to
V
Voltage Reference Input. The common reference voltage for both DACs is applied to this pin. It is internally
buffered before being applied to both DACs. The nominal reference voltage for correct operation of the
AD7247A is 5 V.
OUTB
OUTA
for the +5 V range, to GND for the +10 V range and to REF IN for the 5 V range.
for the +5 V range, to GND for the +10 V range and to REF IN for the 5 V range.
–5–
AD7247A PIN CONFIGURATION
DIP and SOIC
AD7237A/AD7247A