MX7537:CMOS, Parallel Loading, Dual, 12-Bit Multiplying DAC

The Maxim MX7537/MX7547 contain two 12-bit current-output multiplying digital-to-analog converters (DAC) in a single package. Input level shifters, data registers and control logic make microprocessor interfacing straight forward. Operation is from a single +12V to +15V power supply maintaining TTL, 74HC and 5V CMOS logic compatibility. The MX7547 accepts active-low CSA, active-low CSB, active-low WR control signals and 12 data inputs for DAC selection and full parallel data loading. The MX7537 receives data in 2 bytes, using a right justified 8+4 format. A0, A1, active-low CS, active-low WR and UPD signals provide full control for DAC selection and data loading. Each of the DACs in the MX7537/MX7547 provides 4-quadrant multiplication capabilities and separate reference input and feedback resistor pins. The MX7537 additionally makes available separate AGND pins for applications where each DAC is biased at a difference voltage. Since both DACs are on a single monolithic chip, matching and temperature tracking between them is excellent. Gain error is specified at less than ±1 LSB, and 12-bit linearity and monotonicity are guaranteed over the full operating temperature ranges. Maxim's MX7537 and MX7547 are available in narrow 24-lead 0.3" DIP and Wide SO, as well as, 28-pin-lead PLCC packages.

Key Features
  • Two 12-Bit DACs in One Package
  • 0.5% DAC-to-DAC Matching
  • Narrow 0.3" DIP, Wide SO, and PLCC Packages
  • 4-Quadrant Multiplication
  • Low INL and DNL (±1/2 LSB max)
  • Gain Accuracy to ±1 LSB Max
  • Low Gain Tempco (±5 ppm/°C max)
  • Operates with Single +12V to +15V Supply
  • Fast Microprocessor Interface
MX7537, MX7547: Functional Block Diagram
MX7537, MX7547: Functional Block Diagram
Applications/Uses
  • Audio Gain Control
  • Automatic Test Equipment
  • Digitally Controlled Filters
  • Motion Control Systems
  • Process Control
  • Synchro Applications
DataSheet
titleDownload file
MX7537-MX7547 Data SheetMX7537-MX7547.pdf
Parametrics
Part NumberResolution
(bits)
ChannelsOutput TypeReferenceINL
(±LSB)
InterfaceSupply Range
(V)
Supply Range
(V)
ICC
(mA)
Settling Time
(µs)
Package/PinsOper. Temp.
(°C)
Budgetary
Price
maxminmaxmaxtypSee Notes
MX7537122Current- UnbufferedExt.1Parallel - Byte Wide10.816.520.8CDIP(N)/24
LCC/28
PDIP(N)/24
PLCC/28
SOIC(W)/24
-55 to +125
-40 to +85
-25 to +85
0 to +70
$14.00 @1k
MX7547Parallel - Full WordCDIP(N)/24
PDIP(N)/24
PLCC/28
SOIC(W)/24
$18.06 @1k
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MX7537AQNo Longer AvailableCDIP(N),;24 pin;264.3 mm²-20°C to +85°CNo
MX7537BQNo Longer AvailableCDIP(N),;24 pin;264.3 mm²-20°C to +85°CNo
MX7537CQNo Longer AvailableCDIP(N),;24 pin;264.3 mm²-20°C to +85°CNo
MX7537J/DNo Longer AvailableDICE SALES,;NA pin;DICE S;0°C to +70°CSee data sheet
MX7537JCWGNo Longer AvailableMX7537JCWG+SOIC(W),;24 pin;166.1 mm²0°C to +70°CNo
MX7537JCWG+ActiveSOIC(W),;24 pin;166.1 mm²0°C to +70°CLead Free
MX7537JCWG+TActiveSOIC(W),;24 pin;166.1 mm²0°C to +70°CLead Free
MX7537JCWG-TNo Longer AvailableMX7537JCWG+TW.SO;24 pin0°C to +70°CSee data sheet
MX7537JEWGNo Longer AvailableMX7537JEWG+SOIC(W),;24 pin;166.1 mm²-40°C to +85°CNo
MX7537JEWG+ActiveSOIC(W),;24 pin;166.1 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MX7537JEWG+TActiveSOIC(W),;24 pin;166.1 mm²-40°C to +85°CLead Free
MX7537JEWG-TNo Longer AvailableMX7537JEWG+TSOIC(W),;24 pin;166.1 mm²-40°C to +85°CNo
MX7537JNNo Longer AvailableMX7537JN+PDIP(N),;24 pin;158.4 mm²0°C to +70°CNo
MX7537JN+ActivePDIP(N),;24 pin;158.4 mm²0°C to +70°CLead Free
MX7537JPNo Longer AvailableMX7537JP+PLCC,;28 pin;158 mm²0°C to +70°CNo
MX7537JP+ActivePLCC,;28 pin;158 mm²0°C to +70°CLead Free
MX7537JP+TActivePLCC,;28 pin;158 mm²0°C to +70°CLead Free
MX7537JP-TNo Longer AvailableMX7537JP+TPLCC,;28 pin;158 mm²0°C to +70°CNo
MX7537KCWGNo Longer AvailableMX7537KCWG+SOIC(W),;24 pin;166.1 mm²0°C to +70°CNo
MX7537KCWG+ActiveSOIC(W),;24 pin;166.1 mm²0°C to +70°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MX7537KCWG+TActiveSOIC(W),;24 pin;166.1 mm²0°C to +70°CLead Free
MX7537KCWG-TNo Longer AvailableMX7537KCWG+TW.SO;24 pin0°C to +70°CSee data sheet
MX7537KEWGNo Longer AvailableMX7537KEWG+SOIC(W),;24 pin;166.1 mm²-40°C to +85°CNo
MX7537KEWG+ActiveSOIC(W),;24 pin;166.1 mm²-40°C to +85°CLead Free
MX7537KEWG+TActiveSOIC(W),;24 pin;166.1 mm²-40°C to +85°CLead Free
MX7537KEWG-TNo Longer AvailableMX7537KEWG+TW.SO;-40°C to +85°CSee data sheet
MX7537KNNo Longer AvailableMX7537KN+PDIP(N),;24 pin;158.4 mm²0°C to +70°CNo
MX7537KN+ActivePDIP(N),;24 pin;158.4 mm²0°C to +70°CLead Free
MX7537KPNo Longer AvailableMX7537KP+PLCC,;28 pin;158 mm²0°C to +70°CNo
MX7537KP+ActivePLCC,;28 pin;158 mm²0°C to +70°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MX7537KP+TActivePLCC;28 pin0°C to +70°CSee data sheet
MX7537KP-TNo Longer AvailableMX7537KP+TPLCC;28 pin0°C to +70°CSee data sheet
MX7537LCWGNo Longer AvailableMX7537LCWG+SOIC(W),;24 pin;166.1 mm²0°C to +70°CNo
MX7537LCWG+ActiveSOIC(W),;24 pin;166.1 mm²0°C to +70°CLead Free
MX7537LCWG+TActiveSOIC(W),;24 pin;166.1 mm²0°C to +70°CLead Free
MX7537LCWG-TNo Longer AvailableMX7537LCWG+TW.SO;24 pin0°C to +70°CSee data sheet
MX7537LEWGNo Longer AvailableMX7537LEWG+SOIC(W),;24 pin;166.1 mm²-40°C to +85°CNo
MX7537LEWG+ActiveSOIC(W),;24 pin;166.1 mm²-40°C to +85°CLead Free
MX7537LEWG+TActiveSOIC(W),;24 pin;166.1 mm²-40°C to +85°CLead Free
MX7537LEWG-TNo Longer AvailableMX7537LEWG+TW.SO;-40°C to +85°CSee data sheet
Part NumberStatusRecommended ReplacementPackageTempRoHS
MX7537LNNo Longer AvailableMX7537LN+PDIP(N),;24 pin;158.4 mm²0°C to +70°CNo
MX7537LN+ActivePDIP(N),;24 pin;158.4 mm²-55°C to +125°CLead Free
MX7537LPNo Longer AvailableMX7537LP+PLCC,;28 pin;158 mm²0°C to +70°CNo
MX7537LP+ActivePLCC,;28 pin;158 mm²0°C to +70°CLead Free
MX7537LP+TActivePLCC;28 pin0°C to +70°CSee data sheet
MX7537LP-TNo Longer AvailableMX7537LP+TPLCC;28 pin0°C to +70°CSee data sheet
MX7537SENo Longer Available-55°C to +125°CSee data sheet
MX7537SQNo Longer AvailableCDIP(N),;24 pin;264.3 mm²-55°C to +125°CNo
MX7537SQ/883BNo Longer AvailableCDIP(N),;24 pin;264.3 mm²-55°C to +125°CNo
MX7537TEActiveLCC,;28 pin;136.4 mm²-55°C to +125°CNo
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