AD7811 10-Bit, 4-Channel, 350 kSPS, Serial A/D Converter
The AD7811 and AD7812 are high speed, low power, 10-bit
A/D converters that operate from a single 2.7 V to 5.5 V supply.
The devices contain a 2.3 µs successive approximation A/D converter,
an on-chip track/hold amplifier, a 2.5 V on-chip reference and a high speed serial interface that is compatible with the serial interfaces of most DSPs (Digital Signal Processors) and microcontrollers. The user also has the option of using an external reference by connecting it to the VREF pin and setting the EXTREF bit in the control register. The VREF pin may be tied to VDD. At slower throughput rates the power-down mode may be used to automatically power down between conversions.
The control registers of the AD7811 and AD7812 allow the input channels to be configured as single-ended or pseudo differential. The control register also features a software convert start and a software power-down. Two of these devices can share the same serial bus and may be individually addressed in a multipackage application by hardwiring the device address pin. The AD7811 is available in a small, 16-lead 0.3" wide, plastic dual-in-line package (mini-DIP), in a 16-lead 0.15" wide, small
outline IC (SOIC) and in a 16-lead, Thin Shrink Small Outline Package (TSSOP). The AD7812 is available in a small, 20-lead 0.3" wide, plastic dual-in-line package (mini-DIP), in a 20-lead, small outline IC (SOIC) and in a 20-lead, Thin Shrink Small Outline Package (TSSOP).
Features and Benefits- 10-Bit ADC with 2.3 µs Conversion Time
- Four Single-Ended Inputs to
Configure as Three Pseudo Differential
Inputs with Respect to a Common, or as Two
Independent Pseudo Differential Channels - Onboard Track and Hold
- Onboard Reference 2.5 V ± 2.5%
- Operating Supply Range: 2.7 V to 5.5 V
- Specifications at 2.7 V–3.6 V and 5 V ± 10%
- DSP-/Microcontroller-Compatible Serial Interface
- High Speed Sampling and Automatic
- Power-Down Modes
- Package Address Pin on AD7811
and AD7812 Allows Sharing of Serial
Bus in Multipackage Applications - Input Signal Range: 0 V to VREF
- Reference Input Range: 1.2 V to VDD
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Data Sheets
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| AD7811YNZ Production | 16 ld PDIP | OTH 25 | -40 to 105C | 4.81 | 3.72 | Y |
| AD7811YRU Last Time Buy | 16 ld TSSOP | OTH 96 | -40 to 105C | 0 | 0 | N |
| AD7811YRU-REEL7 Last Time Buy | 16 ld TSSOP | REEL 1000 | -40 to 105C | 0 | 0 | N |
| AD7811YRUZ Production | 16 ld TSSOP | OTH 96 | -40 to 105C | 4.67 | 3.6 | Y |
| AD7811YRUZ-REEL7 Production | 16 ld TSSOP | REEL 1000 | -40 to 105C | 0 | 3.6 | Y |
| AD7811YRZ Production | 16 ld SOIC | OTH 48 | -40 to 105C | 4.67 | 3.6 | Y |
| AD7811YRZ-REEL Production | 16 ld SOIC | REEL 2500 | -40 to 105C | 0 | 3.6 | Y |
Reference Materials
