Product Descriptions
The AD7228 contains eight 8-bit voltage mode digital-to- analog converters (DACs), with output buffer amplifiers and interface logic on a single monolithic chip. No external trims are required to achieve the full specified performance for the device.
Separate on-chip latches are provided for each of the eight DACs. Data is transferred into the data latches through a common 8-bit, TTL/CMOS-compatible input port (5 V). The A0, A1, and A2 address inputs determine which latch is loaded when WR goes low. The control logic is speed compatible with most 8-bit microprocessors.
Specified performance is guaranteed for input reference voltages from 2 V to 10 V when using dual supplies. The device is also specified for single-supply operation using a reference of 10 V. Each output buffer amplifier is capable of developing 10 V across a 2 kΩ load.
The AD7228 is fabricated on an all ion implanted, high speed, linear-compatible CMOS (LC2 MOS) process, specifically developed to integrate high speed digital logic circuits and precision analog circuits on the same chip.
Product Features
Eight 8-bit DACs with output amplifiers
Operates with single or dual supplies
Microprocessor-compatible (95 ns WR pulse)
No user trims required
Skinny 24-lead PDIP, CERDIP, and SOIC packages, and a 28-lead PLCC surface-mount package
Product Specification
| Attribute | Attribute value |
| ANSM-Part# | ANSM-AD7228KPZ |
| Category | Integrated Circuits (ICs) |
| Data Acquisition | |
| Digital to Analog Converters (DAC) | |
| Manufacturer | - |
| Packaging | Tube |
| Part Status | Active |
| Number of Bits | 8 |
| Number of D/A Converters | 8 |
| Settling Time | 5µs, 7µs |
| Output Type | Voltage - Buffered |
| Differential Output | No |
| Data Interface | Parallel |
| Reference Type | External |
| Voltage - Supply, Analog | 10.8V ~ 16.5V, -5V |
| Voltage - Supply, Digital | 13.5V ~ 16.5V |
| INL/DNL (LSB) | ± 1 (Max), 1 (Max) |
| Architecture | R-2R |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 28-LCC (J-Lead) |
| Supplier Device Package | 28-PLCC (11.51x11.51) |
| Mounting Type | Surface Mount |
| Base Product Number | AD7228 |
Product Photos
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