The SPT7710 is a fast monolithic 8-bit parallel flash A/D converter. The nominal conversion rate is 150 MSPS and the analog bandwidth is in excess of 200 MHz. A major advance over previous flash converters is the inclusion of 256 input preamplifiers between the reference ladder and input comparators. (See block diagram.) This not only re- duces clock transient kickback to the input and reference ladder due to a low AC beta but also reduces the eect of the dynamic state of the input signal on the latching char- acteristics of the input comparators.The preamplifiers act as buffers and stabilize the input capacitance so that it re- mains constant for varying input voltages and frequencies and, therefore, makes the part easier to drive than previ- ous flash converters. The SPT7710 incorporates a propri- etary decoding scheme that reduces metastable errors (sparkle codes or flyers) to a maximum of l LSB.
PBL38610-2R2 on stock| Breakdown voltage I(BR) = 100 c<A | V(BR) | 70 | | | V |
| Forward voltage IF = 1 mA IF = 10 mA IF = 50 mA IF = 150 mA | | | | 900 1000 1100 1250 | mV |
| Reverse current VR = 70 V ;VR = 70 V, TA = 150 0C | | | | 5 80 | nA |
| | | | | |
| SYMBOL | DIMENSIONS IN INCHES | DIMENSIONS IN MM |
| A | 0.710+0.002 | 18.030.05 |
| B | 0.3000.005 | 7.620.13 |
| C | 0.0600.002 | 1.520.05 |
| D | 0.0500.001 | 1.270.03 |
| E | 0.0630.001 | 1.630.03 |
| F | 0.015+0.002 | 0.3 80.05 |
| G | 0.0300.002 | 0.760.05 |
| H | 0.050+0.002 | 1.270.05 |
| 1 | 0.018+0.002 | 0.460.05 |
| J | 0.0280.002 | 0.710.05 |
| K | 0.337+0.002 | 8.560.05 |
| L | 0.010+0.001 | 0.250.03 |
| M N | 0.0260.002 0.268+0.003 | 0.660.05 6.810.08 |
| 0 | 0.3000.002 | 7.620.05 |
| P | 0.053+0.001 | 1.350.03 |
| Q | 0.1400.004 | 3.5 60.10 |
| y | 0.004(MAX) | O.lO(MAX) |
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