AD7813 +2.7 V to +5.5 V, 400 kSPS 8-/10-Bit Sampling ADC
The AD7813 is a high speed, microprocessor-compatible,
8-/10-bit analog-to-digital converter with a maximum through-put
of 400 kSPS. The converter operates off a single +2.7 V to
+5.5 V supply and contains a 2.3 ms successive approximation
A/D converter, track/hold circuitry, on-chip clock oscillator and
8-bit wide parallel interface. The parallel interface is designed to
allow easy interfacing to microprocessors and DSPs. The 10-bit
conversion result is read by carrying out two 8-bit read operations.
The first read operation accesses the 8 MSBs of the ADC
conversion result and the second read accesses the 2 LSBs.
Using only address decoding logic the AD7813 is easily mapped
into the microprocessor address space.
When used in its power-down mode, the AD7813 automatically
powers down at the end of a conversion and powers up at the
start of a new conversion. This feature significantly reduces the
power consumption of the part at lower throughput rates. The
AD7813 can also operate in a high speed mode where the part is
not powered down between conversions. In this mode of operation
the part is capable of providing 400 kSPS throughput.
The part is available in a small, 16-pin, 0.3" wide, plastic dual-in-
line package (DIP), in a 16-pin, 0.15" wide, narrow body
small outline IC (SOIC) and in a 16-pin thin shrink small outline
package (TSSOP).
Features and Benefits- 8-/10-Bit ADC with 2.3 µs Conversion Time
- On-Chip Track and Hold
- Operating Supply Range: 2.7 V to 5.5 V
- 8-Bit Parallel Interface
8-Bit + 2-Bit Read - Analog Input Range: 0 V to VREF
- Reference Input Range: 1.2 V to VDD
- Specifications at 2.7 V–3.6 V and 5 V ± 10%
- Power Performance
- Normal Operation
10.5 mW, VDD = 3 V
- Automatic Power-Down
34.6 µW @ 1 kSPS, VDD = 3 V
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Data Sheets
Application Notes
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| AD7813YNZ Production | 16 ld PDIP | OTH 25 | -40 to 105C | 4.66 | 3.59 | Y |
| AD7813YRUZ Production | 16 ld TSSOP | OTH 96 | -40 to 105C | 4.51 | 3.49 | Y |
| AD7813YRUZ-REEL7 Production | 16 ld TSSOP | REEL 1000 | -40 to 105C | 0 | 3.49 | Y |
| AD7813YRZ Production | 16 ld SOIC | OTH 48 | -40 to 105C | 4.51 | 3.49 | Y |
| AD7813YRZ-REEL7 Production | 16 ld SOIC | REEL 1000 | -40 to 105C | 0 | 3.49 | Y |
Reference Materials
